Method and installation for the production of methanol using biomass material

 

The invention relates to a method and installation for the production of methanol by the reaction of carbon monoxide and hydrogen using biomass as raw material. The method involves the gasification of biomass to generate gas, and the specified gasification is carried out at an average particle size of the biomass, which is fed to the gasification of 0.05-5.0 mm, the temperature biomass gasification 700-1400oAnd with a volumetric flow per unit area of the total cross section of the device in the device gasification of 0.1-5.0 m/s; summary of gaseous hydrogen to the received gas, where the hydrogen gas is supplied to the received gas so that the amount of hydrogen gas is brought up to at least twice that amount of carbon monoxide contained in the received gas; and feeding the thus obtained gas containing hydrogen in an amount at least twice larger than the number of carbon monoxide, in the device of the synthesis of methanol, to thereby obtain the methanol. Plant for production of methanol comprises a device for the gasification of biomass for the production of gas by incomplete combustion and steam gasification of biomass, feeding gaseous hydrogen astrointestinal of the thus obtained gas. The method also allows the deterioration of the efficiency of methanol production to use natural sources of energy and raw materials. 2 C. and 12 C.p. f-crystals, 1 Il.

The invention relates to a method and installation for the production of methanol using biomass as raw material.

The production of methanol using quality raw material such biomass of plant carried out on the basis of the following reactions.

CH2O + 1/2O2--> + H2About; (1) CO + H2OH2+ CO2; (2) CO + 2H2--> CH3HE. (3) In summary, carbon monoxide (CO) and hydrogen (H2), which are obtained by the incomplete combustion or steam gasification of biomass (CH2O), introduced in response to receipt thereby of methanol (CH3IT).

Used herein, the term "incomplete combustion" refers to the type of combustion, in which a portion of the biomass is subjected to combustion, including the cases of complete and incomplete combustion.

From the diagram (2) it is clear that the above-mentioned reaction include reversible reaction; that is, when attempting to increase the quantity produced of carbon monoxide, the amount produced in the quantity produced of carbon monoxide. Normally, the reaction is shifted to the left, where an increasing number of produced carbon monoxide. Therefore, the amount of hydrogen for the production of methanol becomes insufficient, and the resulting carbon monoxide cannot be used effectively.

One possible way to solve this problem is to supply water (steam) in the reaction system, so as to shift the reaction to the right side of the above diagram (2) to produce hydrogen in a required and sufficient amount. However, when the quantity of steam increases the temperature in the reaction system is reduced, thereby slowing the reaction rate and thereby reducing the efficiency of the production of methanol to a questionable degree.

Having in mind the above, the applicants of the present invention conducted extensive studies in order to solve the problem, and found that methanol can be efficiently develop, summing hydrogen gas to a gas obtained by gasification of biomass conventional methanol production using biomass material. Thus, the purpose of the present invention is to provide a method for the production of methanol using biomass material, which is capable of gelatinosa. Another object of the invention is to propose an installation for the production of methanol.

Accordingly, in the first aspect of the present invention proposes a method of production of methanol, including biomass gasification with getting gas and submission to the received gas, hydrogen gas, thereby to produce methanol.

Preferably, hydrogen gas is supplied to the received gas so that the amount of hydrogen gas is brought to at least twice that amount of carbon monoxide contained in the received gas.

Preferably, the obtained gas down hydrogen gas generated by electrolysis of water.

Preferably, gaseous oxygen generated by electrolysis of water, is used as an agent for biomass gasification.

Preferably, gaseous hydrogen and gaseous oxygen generated by electrolysis of water, to use temporarily store them separately from each other.

Preferably, the water electrolityc electricity produced using natural energy (i.e. the energy derived from natural sources).

Preferably, obtained used the Nergy is at least one type of energy selected from the energy of sunlight, wind energy, energy of the tides, hydraulic energy and thermal energy of the sun.

In the second aspect of the present invention is proposed plant for methanol production using biomass material, comprising a device for gasification of biomass with the receipt of gas by partial combustion or steam gasification of biomass; a device for the synthesis of methanol from the thus obtained gas; and feeding gaseous hydrogen device to supply gaseous hydrogen to the resulting gas.

Preferably, the feed hydrogen gas device brings gaseous hydrogen to the resulting gas so that the amount of hydrogen gas is brought at least to twice that amount of carbon monoxide contained in the received gas.

Preferably, the feed hydrogen gas device includes electrolisys water a device for electrolysis of water.

Preferably, gaseous oxygen generated by electrolysis of water, using the device for the electrolysis of water, down as the gasification agent to the moreover, includes device save gaseous oxygen for temporary storage of gaseous oxygen generated by electrolysis of water, using the device for the electrolysis of water, and the supply of gaseous hydrogen, the device includes the device save gaseous hydrogen for temporary storage of gaseous hydrogen generated by electrolysis of water, using the device for the electrolysis of water.

Preferably, the above-described plant for production of methanol, also includes using the natural energy of the device generating electricity for operation of the water electrolysis on power generated using natural energy.

Preferably, using the natural energy of the device generating electricity includes the storage device of electricity for temporary storage of electricity.

Preferably, using the natural energy of the device generating energy generates electricity by using at least one type of energy selected from the energy of sunlight, wind energy, energy of the tides, hydraulic energy and thermal energy of the sun.

The method and installation for the production of methanol by using a biomass material according to the present invention will be described with reference to the drawing. The drawing is a schematic diagram relating to the plant for production of methanol.

As shown in the drawing, 11 drying for drying of biomass, such as trees and other plants, is connected with the inlet of the hopper 12. The output of a feed hopper 12 is connected with the inlet of the grinding device 13 for grinding dried biomass 1.

The output of the grinding device 13 is connected with the input of the gasification furnace 14, which serves as a device for the gasification of biomass for gas 2, which is produced by incomplete combustion or steam gasification of biomass 1. The output of the gasification furnace 14 is connected to the input unit dust collector 15 for ash removal 6 from the resulting gas is gas obtained 2 by spraying water for washing 7.

The gas outlet of the scrubber 16 is connected through the device of pressure rise 17 and the heat exchanger 18 to the input columns of the methanol synthesis 19, serving as a device for the methanol synthesis methanol production received 8 out of gas 2. The output columns of the methanol synthesis 19 is connected through the heat exchanger 18 and heat exchanger 20 with the tank 21 for storing methanol 8.

With the gasification furnace 14 through the heat exchanger 14a is connected to the water supply device 22. When the water 3 is supplied from the water supply device 22, the heat exchanger 14a evaporates water 3 by heating, and the thus obtained pairs is served in the gasification furnace 14.

To the gasification furnace 14 is also connected to an oxygen gas outlet of the water electrolysis unit 24 for water electrolysis 3 with the formation of gaseous oxygen 4 and gaseous hydrogen 5. Between the gasification furnace 14 and an oxygen gas outlet of the water electrolysis unit 24 has an oxygen gas storage tank 25, which serves as the storage device of gaseous oxygen for temporary storage of gaseous oxygen 4. Hydrogen gas out of water electrolysis unit 24 is connected in position between the unit of pressure rise 17 and a gas outlet of the scrubber 16. The hydrogen gas storage tank 26, the 5, installed between the unit of pressure rise 17 and the hydrogen gas out of water electrolysis unit 24.

With the water electrolysis unit 24 are connected to the water supply device 23 for water supply 3. The auxiliary source of gaseous oxygen 27 for adding gaseous oxygen 4 is installed between the oxygen gas tank 25 and the gasification furnace 14.

The water electrolysis unit 24 is connected with the secondary battery 28, which serves as a storage device of electricity for temporary storage of electricity. The secondary battery 28 is connected to the unit solar power generator 29, serving as using natural energy devices generate electric power for generating energy by using the energy of sunlight, and is connected through the Converter AC/DC voltage 31 to block the wind power generator 30, serving as using natural energy device is generating energy for generating electricity by using wind energy.

In this implementation of the water electrolysis device includes a water supply device 23, the water electrolysis unit 24, and so on, and the feeder gajoob the described method for the production of methanol with the use of such plants for the production of methanol.

Using block solar energy generator 29 and block the wind power generator 30 generates the electricity generated and thus the energy temporarily stored in the secondary battery 28. The water electrolysis unit 24 is controlled by the consumption of stored energy so that the water for electrolysis 3 fed from the water supply device 23. Thus obtained gaseous oxygen 4 is temporarily stored in an oxygen gas tank 25, and the thus obtained hydrogen gas 5 is temporarily stored in the hydrogen gas storage tank 26.

Further, the biomass 1 is dried in the drying 11, is fed into the hopper 12 and is supplied from a feed hopper 12 in a grinding device 13, where the biomass 1 is ground. Shredded biomass is served in the gasification furnace 14. Gaseous oxygen 4 is supplied from an oxygen gas tank 25 in the gasification furnace 14 to thus cause incomplete combustion.

In addition, the water 3 is supplied from the water supply device 22 to the heat exchanger 14a for heating, so as to generate high-temperature steam (400-500oC). Pairs served in the gasification furnace 14. Thus, biomass (SN2O + 1/2O2--> + H2About; (1) CO + H2AboutH2+CO2. (2) As is clear from the above (2), the resulting gas undergoing a reversible reaction; that is, when attempting to increase the quantity produced of carbon monoxide, the amount of produced hydrogen is reduced, and when the attempt to increase the amount of produced hydrogen, decreases the amount of produced carbon monoxide. Normally, the reaction is shifted to the left, where an increasing number of produced carbon monoxide. Therefore, the amount of hydrogen for the production of methanol becomes insufficient.

The resulting gas generated in the aforementioned gasification furnace 14, serves to block the dust collection unit 15, so as to remove ash 6 and similar material. Subsequently, the gas is fed into the scrubber 16, cooled and washed by spraying water in it for washing 7. Then the gas is taken from the scrubber 16.

Hydrogen gas 5 is supplied from the above-mentioned hydrogen gas tank 26 and add to the resulting gas 2 so that the amount of hydrogen is brought at least to twice larger than the number of carbon monoxide. Number of the I into account such conditions, as conditions of gasification in the gasification furnace 14. Can also be installed a monitoring system for measuring the content of carbon monoxide and hydrogen content in the resulting gas 2, leaving the scrubber 16, with the use of a sensor or similar device and to supply on the basis of measurements of the hydrogen gas 5 from the hydrogen gas storage tank 26 is carried out so that the amount of hydrogen becomes at least twice larger than the number of carbon monoxide.

Pressure treated thus obtained gas 2 containing hydrogen in an amount at least twice larger than the number of carbon monoxide increases through the device of pressure rise 17, and the gas is fed through the heat exchanger 18 in the synthesis of methanol 19, so as to obtain methanol (CH3IT) 8 on the basis of the following scheme: CO + 2H2--> CH3HE. (3) the Above-mentioned methanol 8 is fed through the heat exchangers 18 and 20 in the tank 21 for storing and exhaust gas 9 is released from the system to the outside.

In short, perform the deficit of the quantity of gaseous hydrogen 5 in relation to the carbon monoxide present in the received gas 2 is formed from biomass 1, and then get methanol 8.

om gas 2, without loss of carbon monoxide.

Thus, according to the method and installation for the production of methanol from biomass 1 can be effectively utilized, which leads to effective utilization of resources. In addition, the efficiency of production of methanol 8 can significantly be increased, to thereby reduce the cost of production.

Because gaseous oxygen 4 formed by the electrolysis of water 3 to obtain hydrogen gas 5, is used for incomplete combustion in the gasification furnace 14, the water 3 can be effectively utilized, which leads to effective utilization of resources and reducing the cost of production.

In addition, since the electric power generated by the unit solar generator 29 and block the wind generator 30, that is due to the natural energy that is utilized for the electrolysis of water 3 can be achieved efficient utilization of energy, in order thus to reduce the cost of production.

In addition, since the electric power generated by natural energy temporarily stored in the secondary battery 28, the electrolysis of water 3 through a water electrolysis unit 24 can be carried out stably and h is the water 3, to use temporarily stored in tanks 25 and 26, respectively, each of these gases 4 and 5 can be quickly disposed of in the correct amount, while the electrolysis of water 3 through a water electrolysis unit 24 is held under pre-determined conditions.

Examples of biomass 1, which is used in the present invention include biological resources (for example, agricultural products or by-products; waste wood; plants, and so on), which can be recycled as an energy source or industrial raw materials. Examples of such biological resources include sorghum, American millet and spirulina, as well as agricultural residues and waste from the forest of origin, as rice bran, wood chips and wood waste, which are formed during the decimation. To avoid confusion, biomass 1 was described as a composition represented by the formula CH2O. However, the composition of the biomass 1 is generally represented by the formula (CxH2Abouty)n(x = 1.1 to 1.2; y = 0,8-0,9, n is an integer from 1 to about 1000).

The average particle size of the biomass 1, which is served in the gasification furnace 14, preferably 0.05-5 mm of the Reasons for this SL is vom 13, while the particle size of more than 5 mm incomplete combustion with the purpose of decomposition, which is undergoing a major part of biomass is difficult to achieve, and thus affects the efficiency of gasification.

Temperature biomass gasification 1 in the gasification furnace is preferably 700-1400oS, more preferably 800-1000oC. the Reasons for this are as follows. When the temperature is below 700oSince it is difficult to achieve the preferred incomplete combustion, whereas at temperatures in excess of 1400oS, burns itself biomass 1, and thus there is an undesirable increase in the share of hydrocarbon formation like soot.

With pressure biomass gasification 1 in the gasification furnace 14 is not imposed special restrictions. Although the pressure gasification of about 80 atmospheres, allows you to connect gasification furnace 14 with a column for methanol synthesis 19 without installing between devices of pressure rise 17, from the gasification furnace 14 requires high resistance to pressure, and, thus, the cost of the gasification furnace 14 is increased. Thus, it is preferable for the pressure gasification within 1-40 ATM, in which the resistance to pressure is required from the furnace gasify is where the sizes of the gasification furnace 14 may be relatively small, is the most preferred.

Although the volume flow per unit area of the total cross section of the apparatus in the gasification furnace 14 is not specifically limited, it is preferable for the volume flow per unit area in the range of 0.1-5 m/S. the Reason for this is the following. When the volume flow per unit area is less than 0.1 m/s, the duration of stay of biomass 1 in the furnace is greatly increased, which causes the conversion of biomass 1 in hydrocarbons, whereas the volumetric flow rate per unit area in excess of 5 m/s, the residence time of the biomass 1 in the furnace is greatly reduced, which makes it difficult to decomposition of biomass 1 with sufficient incomplete combustion.

In particular, when the average particle size of the biomass 1 is 0.05-1 mm, the volume flow per unit area in the gasification furnace 14 is supported at the level of 0.4-1 m/s, and when the average particle size of the biomass 1 is 1-5 mm, the volume flow per unit area in the gasification furnace 14 is supported at the level of 1-5 m/C. These conditions are particularly preferred, because biomass 1 may be transported under optimum conditions.

In this implementation the block solar energy generator 29, utilizing the energy of sunlight, and the unit is left on natural energy device is generating energy, utilizing natural energy. In accordance with the capacity of generating power, each of the sets of generating power can be used separately or they can be used in combination with other blocks in energy generation, such as power generation due to the tides, utilizing the energy of the tides, hydraulic power generation, utilizing hydraulic energy, or the power generation by solar heat, utilizing the heat energy of the sun to produce electricity.

In this implementation of the water 3, which should arrive in the gasification furnace 14, is supplied from the water supply device 22 and the water 3, which should be received by the water electrolysis unit 24, is supplied from the water supply device 23. However, water 3, which should arrive in the gasification furnace 14 and which should be received by the water electrolysis unit 24 may also be supplied from the same water supply.

According to the method of manufacturing methanol according to the present invention, which includes a biomass gasification for the production of gas and the production of methanol from the resulting gas to the gas down the gaseous bodoro is xida carbon without loss of carbon monoxide. Thus, the biomass can be efficiently disposed of, which leads to effective utilization of resources. In addition, can significantly increase the efficiency of formation of methanol, and thus reduces the cost of production.

According to the device for producing methanol according to the present invention, including a device for the gasification of biomass for the production of gas by partial combustion or steam biomass gasification and methanol synthesis for the production of methanol from the product gas, the device also includes a device for supplying gaseous hydrogen to supply gaseous hydrogen to the resulting gas. Therefore, the methanol can be produced by the complete consumption of carbon monoxide without loss of carbon monoxide. Thus, the biomass can be efficiently disposed of, which leads to effective utilization of resources. In addition, can significantly increase the efficiency of methanol production and thus reduces the cost of production.

CAPTIONS DRAWING 1 - biomass
2 - the resulting gas
3 - water
4 - gaseous oxygen
5 - hydrogen gas
6 - ash
7 - flush water
8 - methanol
9 - exhaust gas
11 - drying
12 - sagrista
16 - scrubber
17 - the unit of pressure rise
18 is a heat exchanger
19 column for methanol synthesis
20 is a heat exchanger
21 is a heat exchanger
22 - water supply device
23 - water supply device
24 is a block electrolysis of water
25 - oxygen gas tank
26 - hydrogen gas tank
27 is an auxiliary source of gaseous oxygen
28 secondary battery
29 - unit solar power generator
30 - unit of the wind power generator
31 - Converter AC/DC voltage.


Claims

1. Method for the production of methanol by the reaction of carbon monoxide and hydrogen, including biomass gasification for gas, and specified the gasification is carried out at an average particle size of the biomass, which is fed to the gasification of 0.05-5.0 mm, the temperature biomass gasification 700-1400oAnd with a volumetric flow per unit area of the total cross section of the device in the device gasification of 0.1-5.0 m/s; summary of gaseous hydrogen to the received gas, where the hydrogen gas is supplied to the received gas so that the amount of hydrogen gas is brought to the thus obtained gas containing hydrogen in an amount at least twice larger than the number of carbon monoxide, in the device of the synthesis of methanol, to thereby obtain methanol.

2. Method for the production of methanol under item 1, where the received gas down hydrogen gas generated by electrolysis of water.

3. Method for the production of methanol under item 2, where the agent biomass gasification using gaseous oxygen generated by the electrolysis of water.

4. Method for the production of methanol under item 3, where gaseous hydrogen and gaseous oxygen generated by the electrolysis of water, before use temporarily separately stored.

5. Method for the production of methanol under item 2, where the electrolysis of water is performed by using electricity generated using natural energy.

6. Method for the production of methanol under item 5, where electricity is produced using natural energy, before using the temporarily stored.

7. Method for the production of methanol under item 5, where the natural energy represents at least one type of energy selected from the energy of sunlight, wind energy, energy of the tides, hydraulic energy and thermal energy of the sun.

8. The mouth of biomass for the production of gas by incomplete combustion and steam gasification of biomass moreover, the specified device provides a gas with an average particle size of the biomass, which is fed to the gasification of 0.05-5.0 mm, the temperature biomass gasification 700-1400oAnd with a volumetric flow per unit area of the total cross section of the device in the device gasification of 0.1-5.0 m/s; feeding hydrogen gas device to supply gaseous hydrogen to the received gas, where the mentioned feeding gaseous hydrogen device brings gaseous hydrogen to the resulting gas so that the amount of hydrogen gas is brought up to at least twice that amount of carbon monoxide contained in the received gas; and a device for the synthesis of methanol for the production of methanol from the thus obtained gas.

9. Plant for production of methanol under item 8, where the feed hydrogen gas, the device includes a water electrolysis device.

10. Plant for production of methanol under item 9, where the device is biomass gasification as a gasification agent serves gaseous oxygen generated by electrolysis of water using the device for the electrolysis of water.

11. Plant for production of methanol by p. the different oxygen generated by electrolysis of water using water electrolysis device, and in which the feed hydrogen gas, the device includes the device save gaseous hydrogen for temporary storage of gaseous hydrogen generated by electrolysis of water using devices electrolysis of water.

12. Plant for production of methanol under item 9, further comprising using the natural energy of the device generating electricity for operation of the electrolysis of water.

13. Plant for production of methanol under item 12, where using the natural energy of the device generating electricity includes a device for temporary storage of electricity.

14. Plant for production of methanol under item 12, where using the natural energy of the device generating electricity generates electricity using at least one type of energy selected from the energy of sunlight, wind energy, energy of the tides, hydraulic energy and thermal energy of the sun.

 

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