A method of obtaining a distillate fractions from the waste gases of the production process furnace carbon black

 

The invention relates to the petrochemical industry, in particular to obtain a distillate fractions. Method for the production of distillate fractions includes obtaining synthesis gas and pass successively through the units of production of liquid distillates and separation of liquid distillates. Synthesis gas is produced from the exhaust gases of the process of production of furnace carbon black, which after a block of obtaining carbon black are sequentially passed through the blocks purification of exhaust gases from traces of carbon black, drying and compression. The process in block production of liquid distillate is carried out at a temperature of 300-330oWith that pressure of not more than 3.0 MPa and flow rate 1000-3000 h-1. The invention allows to process gases to the process of production of furnace carbon black in a hydrocarbon distillate fractions. 1 Il.

The invention relates to the petrochemical industry and, in particular, to methods of recycling waste gas processes for the production of furnace carbon black from hydrocarbons and the production of motor fuels.

The closest analogue to this invention is a method of obtaining a distillate fractions, including the production of synthesis gas Eat. N. C. Pecora and other Chemistry and technology of synthetic liquid fuels and gas Meters, Chemistry, 1986, S. 262-269).

The disadvantage of this method is the low yield of the product (liquid distillate) in the processing of nitrogen-containing synthesis gas, such as exhaust gases of the process of production of furnace carbon black, and a small selectivity for yield of isoparaffin hydrocarbons that increase the octane number of the gasoline fraction in the liquid distillate.

In the claimed invention solved the technical problem of the development of technologies for processing exhaust gases of the process of production of furnace carbon black in a hydrocarbon distillate fractions, mainly petrol and diesel.

The technical problem is solved in a method of producing distillate fractions, including the production of synthesis gas and pass successively through the units of production of liquid distillate, and separating the liquid distillate, while the synthesis gas composition, vol.%: N260-70; N216-20; 8-10; CO25; CH45;C21, is obtained from the exhaust gases of the process of production of furnace carbon black, which after the block p is drying and compression. In addition, the process in block production of liquid distillate is carried out at a temperature of 300-330oWith that pressure of not more than 3.0 MPa and flow rate 1000-3000 h-1.

The invention is illustrated in the drawing, which shows the diagram of the plant for producing distillate fractions from the waste gases of the production process furnace carbon black.

Device for producing distillate fractions from synthesis gas consists of series-connected unit for production of furnace carbon black (not shown), gas treatment unit from traces of carbon black 1, block drying gas 2, gas compression unit 3, block the production of liquid distillates 4, block separation of liquid distillates 5.

The method is as follows.

After a block of obtaining furnace carbon black wet flue gas containing 0,06...0.2 g/nm3or 0.8...2.6 kg/h of dispersed carbon and having a composition, vol.%: N255-60; H212-20; 6-10; CO25; CH45;C21; N2About<20, serves to block 1 gas cleaning traces of carbon black using a fabric filter or scrubber gas cleaning. Then the wet waste is 0-40oWith and served on the first stage of the compressor in the unit 3 compression, where the gas komprimiert to 0.8... 1.0 MPa. At the second stage in block 3 of the gas win up to 3.0 MPa. The result is synthesis gas composition;.%: N260-70; N216-20; 8-10; CO25; CH45;C21, which is sent to the block 4 production of liquid distillate fractions.

Synthesis of liquid distillate is carried out in the unit production of liquid distillate at a temperature of 300-330oC, pressures up to 3.0 MPa and a flow rate of 1000 to 3000 h-1. As the catalyst used bifunctional catalyst containing metallic phase (cobalt, or iron) on medium and zeolite.

The resulting synthesis of the mixture of liquid product is fed to phase separation (rectification) in block 5 separation of liquid distillates, where there are petrol and diesel fractions.

Claims

1. Method for the production of distillate fractions, including the production of synthesis gas and pass successively through the units of production of liquid distillates and separation of liquid distillates, characterized in that ttp://img.russianpatents.com/chr/8804.gif">5;C21, is obtained from the exhaust gases of the process of production of furnace carbon black, which after a block of obtaining carbon black are sequentially passed through the blocks purification of exhaust gases from traces of carbon black, drying and compressing.

2. The method according to p. 1, characterized in that the process in the production of liquid distillate is carried out at a temperature of 300-330oWith that pressure of not more than 3.0 MPa and flow rate 1000-3000 h-1.

 

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FIELD: powder metallurgy.

SUBSTANCE: starting powders of silicon, 40 to 400 mcm, and niobium, below 63 mcm, are taken in proportion (1.33-1.38):1 to form monophase product and in proportion (1.44-1.69):1 to form multiphase product. Powders are subjected to mechanical activation in inert medium for 0.5 to 2 min, ratio of powder mass to that of working balls being 1:20. Resulting powder is compacted and locally heated under argon atmosphere to initiate exothermal reaction producing niobium silicide under self-sustaining burning conditions. Process may be employed in metallurgy, chemistry, mechanical engineering, space, nuclear, and semiconductor engineering, and in electronics.

EFFECT: found conditions for monophase and multiphase crystalline niobium silicide preparation.

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