Heat treatment (B01J38/02)

Reactivating propane dehydrogenation catalyst // 2608732
FIELD: chemistry.SUBSTANCE: invention relates to a method, that enables to obtain reactivated alkane dehydrogenation catalyst. Treatment within a regenerator comprises following sequential steps: (a) heating deactivated catalyst to a temperature of at least 660C using heat generated by combusting coke, contained on partially deactivated catalyst, and a fuel source other than said coke; and (b) subjecting further deactivated catalyst at a temperature of at least 660C while exposing to a flow of an oxygen-containing gas, which essentially does not contain combustible hydrocarbons, carbon oxides and water vapour, for a period of time longer than two minutes. Method may also (optionally) include a step (c) for maintaining oxygen-containing reactivated catalyst from step (b) at a temperature of at least 660C while exposing reactivated catalyst to a flow of stripping gas that is substantially free of molecular oxygen and combustible materials.EFFECT: present invention provides improved characteristics of catalyst and increased number of response/reactivation cycles.7 cl, 13 tbl, 7 ex

Process and device for treating catalyst discharged from bubbling bed hydrogenation of residual oil // 2607764
FIELD: chemistry.SUBSTANCE: invention relates to a method for treating a catalyst discharged from bubbling bed hydrogenation of residual oil. Method comprises following steps: (1) adjustment and control to reduce viscosity, wherein catalyst discharged intermittently from a bubbling bed hydrogenation reactor for residual oil, is adjusted for storage and then discharged continuously, subjected to temperature adjustment by adding water, such that viscosity of oil adsorbed on surfaces and inside pores of discharged catalyst particles is reduced, and flowability of adsorbed oil on surfaces and inside pores of the discharged catalyst particles is improved; (2) desorption and separation by rotational flow, wherein adsorbed oil is desorbed and separated from surfaces and inner pores of discharged catalyst particles by a flowing shear force from a rotational flow field; (3) separation and resource utilisation of three phase oil-water-catalyst, wherein oil/water/catalyst mixture produced from desorption and separation by rotational flow, is subjected to three-phase separation, achieving recovery of oil, recycling of water obtained by separation, and full recovery of solid particles obtained by separation. Invention also discloses a device for implementation of method.EFFECT: technical result consists in reduction of cost of treatment, simplified process, higher oil recovery factor, reduced tendency to formation of secondary sources of contamination.10 cl, 1 dwg, 1 ex

ixing feed reservoir system // 2593996
FIELD: chemistry. SUBSTANCE: invention relates to improved systems and methods for storage of suspensions and handling thereof. Feed reservoir of system for storage of suspension, including hydrocarbons and catalyst, comprises a reservoir for storage, having a first end, inclined towards inlet for recycling, a second end and at least one wall surrounding inner volume between first and second ends; suspension inlet communicated with internal volume, suspension inlet is located between first end and second end of said reservoir; outlet communicated with internal volume, outlet is located between first end and inlet for suspension; said recycling inlet communicated with inner volume of first end of storage reservoir, recycling inlet is located in lower point and/or in lowest point of inclined bottom; pump with a suction line communicated with outlet; a recycling valve communicated with discharge line of pump and inlet for recycling; outlet valve communicated discharge pump line; and a flow deflector inside said reservoir, arranged to redirect flow between inlet for suspension and inlet for recycling. Invention also relates to a cracking system with a fluidised catalyst, comprising a cracking lift-reactor with fluidised catalyst made to ensure reaction of hydrocarbon with catalyst to obtain a product; a cooling tower in fluid communication with cracking lift-reactor with fluidised catalyst and configure to mix product with cooling oil; filtration system in fluid communication with cooling tower and configured to remove suspension of fuel oil from cooling oil; service container system in fluid communication with filtration system, a regenerator, configured to feed catalyst in cracking lift-reactor with fluidised catalyst. EFFECT: in said systems for storage of solid substances remain suspended in oily suspension. 14 cl, 8 dwg
ethod of catalyst regeneration // 2554866
FIELD: chemistry.SUBSTANCE: invention relates to a method of regenerating one or more particle (particles) of the deactivated cobalt-containing Fischer-Tropsch catalyst in situ in the reactor tube, where the said catalyst particle(s) are deactivated by the application in the Fischer-Tropsch process, with the said regeneration method containing the following stages: (i) catalyst particle(s) is/are oxidised at a temperature from 20 to 400C, preferably from 100 to 400C, more preferably from 200 to 400C; (ii) catalyst particle(s) is(are) processed with a solvent, containing ammonium carbonate and methylamine, ethylamine, propylamine and/or butylamine, for the time period longer than 5 minutes; (iii) catalyst particle(s) is/are dried and, optionally, heated; and (iv) catalyst particle(s) is/are reduced with hydrogen or a hydrogen-containing gas. The method of generating one or more particles of the cobalt-containing Fischer-Tropsch catalyst also contains s the following stages: (a) catalyst particle(s) is/are oxidised in the reactor pipe at a temperature from 20 to 400C, preferably from 100 to 400C, more preferably from 200 to 400C; (b) catalyst particle(s) is/are discharged from the reactor pipe; (c) catalyst particle(s) is/are processed with a solvent, containing ammonium carbonate and methylamine, ethylamine, propylamine and/or butylamine, for the time period longer than 5 minutes; (iii) catalyst particle(s) is/are dried and, optionally, heated.EFFECT: advantage of the method consists in the fact that during the processing stage only a small amount of cobalt is washed out, with the simultaneous reduction of the dissolved iron amount.18 cl, 3 tbl, 2 ex

ethod of regenerating cobalt-containing catalyst for obtaining synthetic hydrocarbons in accordance with fischer-tropsch method // 2552525
FIELD: chemistry.SUBSTANCE: regeneration includes oxidation of deactivated catalyst by supply of air into reactor zone at rate 500-2000 h-1, heating to temperature 200-270C at heating rate 1-3C/min and exposure at said temperature in air flow for 1-5 h. Further reduction is carried out by supply of hydrogen-containing gas at oxidation temperature with volume rate 1000-5000 h-1, heating to temperature 300-600C at rate 1-5C/min and exposure at heating temperature in flow of hydrogen-containing gas for 1-5 h. Method includes carrying out additional stage of deactivated catalyst reduction with hydrogen-containing gas before redox regeneration. Hydrogen-containing gas of the similar composition with hydrogen content from 20 to 100 vol % is used in reduction.EFFECT: increased efficiency of regeneration and increase of catalyst service duration in comparison with other methods known in technology.4 cl, 1 tbl, 7 ex
ethod of regenerating nickel catalyst // 2539986
FIELD: chemistry.SUBSTANCE: invention relates to method of regenerating spent nickel-containing catalyst of hydration of unsaturated hydrocarbons, consisting of Raney nickel and aluminium oxide. Claimed method includes recovery of catalyst activity at temperature 350-400C and atmospheric pressure in flow of hydrogen-containing gas for 0.5-1.0 h.EFFECT: method makes it possible to recover high catalyst activity.5 ex

ethod of activating platinum-mordenite catalyst for hydroisomerisation of benzene-containing fractions // 2529997
FIELD: chemistry.SUBSTANCE: described is a method of activating platinum-mordenite catalysts for hydroisomerisation of benzene-containing fractions and which is carried out at high temperature and pressure, successive treatment thereof in a current of dry air and reduction with hydrogen, wherein reduction is carried out in two steps.EFFECT: high catalyst activity.2 cl, 2 tbl, 8 ex

ethod of producing regenerated hydrofining catalyst and method of producing petrochemical product // 2528375
FIELD: chemistry.SUBSTANCE: disclosed is a method of preparing a regenerated hydrofining catalyst by regenerating a spent hydrofining catalyst in a given temperature range, where the given temperature range is from T1 -30C or higher to T2 +30C or lower, said temperature range being defined by conducting differential thermal analysis of the spent hydrofining catalyst, converting differential heat in a temperature measurement range from 100C or higher to 600C or lower into an electromotive force difference, double differentiation of the converted value on temperature to obtain the least extremal value and a second least extremal value, and presenting temperature which corresponds to the extremal value at the side of lower temperatures as T1 and temperature corresponding to the extremal value at the side of higher temperatures as T2. The invention also discloses a method of producing a petroleum product using said catalyst and the regenerated catalyst itself.EFFECT: method enables to obtain a regenerated hydrofining catalyst, having a constantly high activity, from a spent hydrofining catalyst.7 cl, 5 dwg, 1 tbl, 4 ex

Fischer-tropsch catalyst regeneration by oxidation and treatment with mixture of ammonium carbonate, ammonium hydroxide and water // 2522324
FIELD: chemistry.SUBSTANCE: invention relates to catalysis. Described is a method of regenerating one or more particles of a cobalt-containing Fischer-Tropsch catalyst in situ in a reactor tube, the method comprising steps: (i) oxidising the catalyst particle(s) at temperature of 20-400C; (ii) treating the catalyst particle(s) for more than 5 min with a solvent; (iii) drying the catalyst particle(s); and (iv) optionally reducing the catalyst with hydrogen or any hydrogen-containing gas.EFFECT: high catalyst activity.10 cl, 4 tbl, 4 ex

System for extraction of catalyst of oxygenates conversion in olefins with reaction shut-down tower exploiting low-temperature drying chamber with fluidised bed // 2507002
FIELD: process engineering.SUBSTANCE: invention relates to catalysis, particularly, to extraction of catalyst in conversion of oxygenates into olefins. Proposed method comprises the jobs that follow. Flow of the products of oxygenates conversion into olefins is bypassed into reaction shutdown tower. Bottom flow of said tower containing the catalyst is removed. Bottom flow of said tower is separated to obtain in fact clarified fluid and flow bearing the catalyst. Catalyst-bearing flow is bypassed into drying chamber and dried therein to obtain in fact dry catalyst by mixing it with dry heated gas whereat said gas is heated to 150C to 250C. Dried catalyst is bypassed into catalyst regenerator for the latter to be recovered.EFFECT: catalyst extraction.9 cl, 1 dwg

ethod of catalyst regeneration for processing of hydrocarbons // 2500477
FIELD: chemistry.SUBSTANCE: invention relates to field of catalysis. Described is method of regeneration of catalyst, which contains, at least, one VIII group metal and, at least, one VIB group metal, applied on carrier from heat-resistant oxide, which includes, at least, one first stage of thermal processing of catalyst in presence of oxygen at temperature in the range from 350C to 550C, at least, one second stage of sedimentation on the surface of catalyst of one additive of formula : in which groups R1 and R2, identical or different, represent hydrogen atom or hydrocarbon group, linear or branched, saturated or unsaturated, which contains from 1 to 8 atoms of carbon, does not contain aromatic cycle (cycles) and, possibly, contains one or several heteroatoms, selected from atoms of oxygen nitrogen or sulfur.EFFECT: increase of efficiency.14 cl, 1 dwg, 3 tbl, 2 ex

ethod of regeneration of catalysts for processing hydrocarbons // 2500476
FIELD: chemistry.SUBSTANCE: invention relates to field of catalysis. Described is method of regeneration of catalyst, which contains, at least, one VIII group metal and, at least, one VIB group metal, applied on carrier from heat-resistant oxide, which includes, at least, one first stage of thermal processing of catalyst in presence of oxygen at temperature in the interval from 350C to 550C, at least, one second stage of sedimentation onto the surface of catalyst of one or several additives of formula : in which R1 is hydrogen atom; R2 is hydrocarbonate bivalent group, linear or branched, saturated or unsaturated, which contains from 1 to 6 atoms of carbon, and, possibly, possibly, substituted with one or several groups of -OH, -OR, -NH2, -NHR, -NRR', where R and R' stand for alkyl groups, which contain from 1 to 4 carbon atoms and, preferably, 1 or 2 carbon atoms; R3 is hydrocarbon group, linear or branched, saturated or unsaturated, which contains from 1 to 4 carbon atoms.EFFECT: increase of catalyst activity.14 cl, 4 tbl, 2 ex

Purifying from disperse particles material, filter-catalyst for purification from disperse particles with application of purifying from disperse particles material and method of regenerating filter-catalyst for purification from disperse particles // 2468862
FIELD: chemistry.SUBSTANCE: described is purifying from disperse particles material, used for filter-catalyst for purification from disperse particles, and filter-catalyst is located on the way of flow of exhaust gases of internal combustion engine, catching disperse particles in exhaust gases, which are formed in internal combustion engine, and burning precipitated disperse particles in order to be regenerated, and purifying from disperse particles material includes: oxide, containing cerium (Ce), possessing ability to accumulate-release oxygen; and at least one metal (Me), selected from group, consisting of zirconium (zr), yttrium (Y), lanthanum (La), praseodymium (Pr), strontium (Sr), nioubium (Nb) and neodymium (Nd), and ratio of content of (Ce:Me) cerium to metal constitutes from 6:4 to 9:1 in units of atomic ratio, and degree of crystallinity (CR), represented by the following formula (1), lies within the range 36-60%: Degree of crystallinity (CR)=I/I0 100(%) (1), where I represents intensity of X-ray diffraction peak with respect to plane (111) of phase CeO2 in purifying from disperse particles material, and I0 stands for intensity of X-ray diffraction peak with respect to plane (111) of phase CeO2 after roasting material, which purifies from disperse particles, in the air at 1000C. Described is filter-catalyst for purification from disperse particles, which is located on the way of flow of exhaust gases of internal combustion engine, catching disperse particles in exhaust gases, which are formed in internal combustion engine, and burning precipitated disperse particles in order to be regenerated, and filter-catalyst includes: filter-carrier, made from porous ceramics with continuous small pores; and layer of catalyst, formed on the wall of filter-carrier, and catalyst layer contains: 25-100 g/l of mixture of described above purifying from disperse particles material and noble metal; and 0.25-1.0 g/l of noble metal, counted per unit of volume of filter-carrier. Described is method of regeneration of described above filter-catalyst, including control of internal temperature of filter-catalyst at the level from 350C to 800C, thus ensuring burning and removal of disperse particles, precipitated on filter-catalyst.EFFECT: obtaining efficient material, purifying from disperse particles.10 cl, 4 tbl, 7 dwg, 24 ex

Controlled execution of thermocompressors for continuous catalyst regeneration // 2467799
FIELD: chemistry.SUBSTANCE: invention relates to catalyst regeneration. Described is a catalyst regeneration system comprising: a catalyst regeneration column (104), having a cooling zone (112) which receives a catalyst cooling stream (148); a first thermocompressor (138) using first working steam (142); and a second thermocompressor (140), arranged in parallel to the first thermocompressor, in which nitrogen is used as the working steam (152); and one or more valves (154) which are able to selectively direct the cooling stream (132) into at least one thermocompressor selected from the first thermocompressor (138) or the second thermocompressor (140) to obtain a catalyst cooling stream (148). Described is a catalyst regeneration system method involving: removing a first gas stream (118) from the regeneration column (104); feeding the first gas stream (118) into an air heater (122) to obtain a heated first gas stream (124); splitting the heated first stream (124) to obtain a return stream (126) of the regeneration column and a cooling loop stream (128); cooling the cooling loop stream (128) in the cooler (130) of the cooling zone to obtain a cooled stream (132); selectively feeding the cooled stream (132) into at least one thermocompressor selected from the first thermocompressor (138) using first working steam (142) or the second thermocompressor (140) using nitrogen as the second working steam (152), to obtain a catalyst cooling stream (148); and feeding the catalyst cooling stream (148) into the regeneration column (104).EFFECT: simple continuous catalyst regeneration.10 cl, 1 dwg

ethod of regenerating fischer-tropsch synthesis cobalt catalyst // 2456080
FIELD: chemistry.SUBSTANCE: invention relates to methods of regenerating catalysts. Described is a method of regenerating a spent Fischer-Tropsch synthesis cobalt catalyst involving successive treatment of particles of the spent Fischer-Tropsch synthesis cobalt catalyst with cobalt content from 5 g to 70 g per 100 g support in order to remove wax, oxidation with air containing about 21% oxygen at pressure 4-30 bar and temperature T from 150C to 400C and reduction.EFFECT: described method increases efficiency of regenerating a Fischer-Tropsch synthesis cobalt catalyst.11 cl, 2 tbl, 1 ex
ethod for regenerating catalyst for producing isoprene from 4,4-dimethyl-1,3-dioxane // 2446884
FIELD: chemistry.SUBSTANCE: invention relates to methods of regenerating catalysts. Described is a method of regenerating a catalyst for producing 4,4-dimethyl-1,3-dioxane by firing coke and resin in the presence of water vapour and air or an oxygen-containing mixture in series-connected reactors at temperature 400-500C and pressure in the first reactor of 0.9-1.4 atm and pressure at the output of the second reactor of 0.5-0.7 atm.EFFECT: low specific consumption of water vapour and other energy resources.3 cl, 3 ex

ethod of activating chromium-containing catalysts // 2410157
FIELD: chemistry.SUBSTANCE: described is a method of activating a chromium-containing industrial catalyst for polymerisation of olefins, involving a firs step for treatment of the catalyst which includes a time for first increase in temperature to a first required value higher than 400C, maintaining the first temperature for a first holding period at least greater than 0; at least a second step for treatment of the catalyst which includes a time for second increase in temperature to a second required value and maintaining the second temperature for a second holding period at least greater than 0, in which the second temperature is higher than the first, the common activation cycle is less than 20 hours, and the activated catalyst contains 40% or more conversion to chromium (+6). The invention also describes a method of activating a chromium-containing industrial catalyst for polymerisation of olefins, involving at least 2 steps, in which step 1 involves instant addition of catalyst to a medium pre-heated to a first temperature between approximately 400C and approximately 700C, while maintaining the first temperature for approximately 1-20 hours, followed by step 2 which involves raising temperature to a second temperature value between approximately 800C and 900C for a period of time less than or equal to 3 hours and maintaining the second temperature for approximately 1-10 hours, where the method is realised periodically or continuously, and a method of increasing efficiency of activating an industrial chromium-containing catalyst for polymerisation of olefins, involving: instantaneous treatment of the catalyst at temperature of approximately 800C in a first atmosphere of nitrogen or carbon oxide; maintaining temperature for not less than approximately 15 minutes; replacing the first atmosphere with anhydrous air; and maintaining temperature for an additional period of time. Described also is a method for speeding up activation the industrial chromium-containing catalyst for polymerisation of olefins, involving raising temperature of the catalyst to a first temperature lower than or equal to 800C for less than 10 minutes and maintaining the first temperature for less than or equal to 3 hours and then raising temperature to a second temperature value in less than 15 minutes and maintaining the second temperature for less than 10 hours, where the second temperature is higher than the first, and the activation method is less than 15 hours long overall.EFFECT: shorter time required for activating the catalyst while increasing catalytic activity at the same time.21 cl, 2 tbl, 4 dwg, 4 ex
ethod to activate light gasoline fraction isomerisation catalyst // 2404857
FIELD: chemistry.SUBSTANCE: invention relates to activation of catalysts. Proposed invention covers activation of catalyst of isomerisation of light gasoline fractions that contains platinum and/or palladium on oxide carrier with elements of the 3rd, 4th and 6th groups of periodic system by drying in dry airflow at increased temperatures, blowing by inert gas and reducing by hydrogen at increased temperature and pressure. Proposed method differs from known procedures in that hydrogen treatment is performed with water addition in amount of 5 -20 m/n-1.EFFECT: increase in specific activity of catalyst.3 cl, 1 tbl, 7 ex
ethod of activating carbon monoxide oxidation catalyst // 2279917
FIELD: oxidation catalysts.SUBSTANCE: invention relates to sorption engineering and can be used for regeneration of different kinds of hopcalite lost catalytic activity during long-time storage. Regenerated sorbents can be used un respiratory masks and in processes or removing carbon monoxide from industrial emissions. Invention provides a method for activating carbon monoxide oxidation catalyst involving heat treatment thereof and characterized by that activation is conducted by heating catalyst bed 2-3 cm thick to 180-380°C at temperature rise velocity 10-20°C/min while constantly carrying away reactivation products.EFFECT: enabled restoration of catalytic activity.3 ex

ethod for regenerating catalyst for production of isoprene from 4, 4-dimethyl-1,3-dioxane // 2235592
The invention relates to a method of regeneration of catalysts, in particular calcium phosphate, and can be used in the petrochemical industry for the production of isoprene

The activation method of the zeolite catalysts for the oxidative hydroxylation of aromatic compounds // 2192308
The invention relates to the field of organic synthesis, more specifically to a method for production of phenol and its derivatives by catalytic oxidation of benzene and its derivatives

The method of obtaining ultracytochemical polyethylene and method of activating the catalyst carrier // 2179982
The invention relates to a method for ultracytochemical polyethylene and method of activating the catalyst carrier
 
2551080.
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