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31results about How to "Lower liquefaction costs" patented technology

Wood liquefier and method for preparing surfactant using liquidated wood

The invention provides a preparation method for a wood liquefacient. A discarded PET bottle is crashed into powder, which is mixed with polylol and added with 0.01-0.5wt% of catalyst, and the mixture is stirred uniformly and heated to react, thus obtaining the wood liquefacient. The invention also relates to a method for preparing a surfactant by using the liquefacient to liquefying wood, which includes the steps: 0.5-10wt% of inorganic acid catalyst and glycerin are added into the mixture of the liquefacient and the wood meal of broad leaved forests or coniferous forests, which reacts by heating to obtain a coarse liquefied wood product; the product is cooled to room temperature, diluted in absolute ethyl alcohol or acetone and then filtered in vacuum to form the filtrate, which is subsequently decompressed and distilled so as to obtain refined liquefied wood; the sodium hydroxide solution of the fully dissolved liquefied wood is added with propylene oxide according to the mass morality of total hydroxide radical to propylene oxide being 1:3-10 for reaction, and then epoxy ethane is entered for end capping, after that, the pH value is adjusted to 7, then the liquefied wood polyethenoxy ether of the surfactant is obtained as the final product.
Owner:JIANGSU QIANGLIN BIO ENERGY

Internal combustion heating moving-bed type biomass pyrolysis liquefying apparatus

The invention discloses an internal combustion heating movable-bed biomass-pyrolysis liquefaction device which includes a reactor (7); the inside of the reactor is provided with an internal combustion pipeline (5); both the inlet and the outlet of the internal combustion pipeline (5) are arranged outside the reactor (7); a hopper (1) is arranged above the reactor (7); a blanking control valve (2) is arranged on the hopper (1); a rotary shaft (6) is arranged in the center of the reactor (7); conical hoppers (4) are arranged on the rotary shaft (6); conical material dividing umbrellas are arranged between the conical hoppers (4); the material inlet of the hopper (1) is arranged above the conical hoppers (4); a pyrolysis gas outlet (20) is arranged on the reactor (7); the bottom part of the reactor (7) is provided with a slag discharge opening (14); a cyclone separator (23) is connected on the gas pipeline of the pyrolysis gas outlet (20); the flue gas outlet of the cyclone separator (23) is connected into a condenser (26); an oil outlet and an outlet for non-condensable gas are arranged on the condenser (26); the outlet for non-condensable gas is connected to a gas buffer tank (28) through a draught fan. The biomass-pyrolysis liquefaction device reduces the liquefaction cost of bio-oil, has a simple structure and a low processing and manufacture cost as well as is simply and conveniently operated, managed and maintained.
Owner:HEFEI UNIV OF TECH

Method for co-liquefaction of coal and waste plastics under mild condition

The invention is a method for co-liquefaction of coal and waste plastics under a mild condition, which comprises the following steps: adding coal, waste plastics, lignosulfonate, a catalyst, and a solvent into an autoclave, introducing hydrogen to increase the pressure to 1.0-10.0 Mpa, heating to 300-450 DEG C for a liquefaction reaction, collecting the gas after the hydrogenation liquefaction test in the autoclave, analyzing the gas phase composition by a gas chromatography, collecting all the other liquefaction products in a filter paper cylinder, performing hexane and tetrahydrofuran solvent extraction in order by a soxhlet extraction device, wherein the substance soluble in hexane is oil, and the substances soluble in tetrahydrofuran but insoluble in hexane are asphaltene and preasphaltene, and calculating the total conversion rate of the liquefaction by using the amount of the insoluble substances in tetrahydrofuran. The invention allows the coal to perform a depolymerization reaction at a low temperature, and to be co-liquefied with waste plastics; the extraction rate of coal by solvents such as pyridine and the like is increased, and the coal liquefaction process is accelerated; not only the hydrogen consumption and production cost for coal liquefaction are greatly reduced, but also white pollution caused by waste plastics is solved.
Owner:LIUPANSHUI NORMAL UNIV

Rapid liquefaction method for corps wastes by microwave heating catalysis

The invention provides a method for catalyzing waste of crops to be liquefied by microwave heating, which comprises: the waste of crops is added into polylol and sulphuric acid for microwave heating, the temperature is controlled to be 150-180 DEG C, and the liquification reaction is carried out for 10-30min. The method utilizes microwave auxiliary heating and reaction catalytic effect to realize rapid liquification for the waste of crops, thus greatly improving the liquification efficiency of the waste of crops and the liquification effect thereof, and leading the liquification efficiency to reach over 90%; the operation of the method is rapid, simple and convenient as well as efficient, so that the liquification cost of the waste of crops can be greatly reduced.
Owner:CHINA AGRI UNIV

Method for directly liquefying coal in CO and H2O system

InactiveCN101565631AAvoid the disadvantages of complexity and large investmentSimple process equipmentLiquid hydrocarbon mixture productionLiquid productProcess equipment
The invention discloses a method for directly liquefying coal in CO and H2O atmosphere. The method of directly supplying pure hydrogen is replaced by a method of using water-gas shift reaction for supplying hydrogen, water is used for substituting traditionally liquefied circulating solvent oil and the CO / H2O system is used for directly liquefying the coal with hydrogen. Low-rank coal is used as raw material, transition metal oxide or sulfide is used as catalyst, water is used as solvent and hydroxyl compound is added as assistant, and the low-rank coal is directly liquefied with hydrogen in the subcritical or supercritical state of water and CO atmosphere. The liquefying conversion rate thereof can reach 75.4 wt percent (drying ash-free basis coal) and the oil yield reaches 48 percent. The method for directly liquefying the coal in CO and H2O atmosphere avoids the working procedures of complex hydrogen preparation equipment, low-rank coal drying and dehydration and the like in the traditional coal hydroliquefaction process, thereby simplifying the whole processing equipment. As the hydrogen generated in the CO and H2O system has higher activity, the hydrogenolysis of the low-rank coal is promoted, the yield of liquid products is increased, the liquefaction cost of the coal is reduced and the use value of the low-rank cola can be greatly improved.
Owner:EAST CHINA UNIV OF SCI & TECH

Coal direct hydro-liquefaction method

The invention provides a coal direct hydro-liquefaction method. According to the method, under a coal direct hydro-liquefaction reaction condition, a raw material mixture containing coal, a catalyst and a solvent contacts hydrogen in a tubular reactor, such that a liquefied product containing liquid hydrocarbon oil is obtained. According to the method, hydrogen is added into the tubular reactor from at least two positions of the tubular reactor. Compared with prior arts, the method employs a small-diameter tubular reactor which is easy to manufacture and to install. With the method provided by the invention, excess hydrogen amount during a reaction process is reduced, the utilance of hydrogen and the reactor is improved, the reaction time is reduced, secondary decomposition of the target product is reduced, and condensing and coking reactions of macro-molecule organic compounds are reduced.
Owner:杨元一 +2

System and method for recycling gas containing carbon dioxide

The invention discloses a system and a method for recycling gas containing carbon dioxide, and the system for recycling the gas containing the carbon dioxide comprises a steam-water separator, a compressor unit, a condenser and a vacuum storage device. Gas containing carbon dioxide is supplied to a steam-water separator, free water in the gas is removed, then the gas enters a compressor unit to besubjected to multi-stage compression cooling, then the gas enters a condenser to be subjected to cooling liquefaction, finally liquefied carbon dioxide is conveyed into a vacuum storage device to bestored, and non-condensable gas is exhausted. The obtained liquid carbon dioxide not only can realize stable use of carbon dioxide, but also can be canned for sale, and has good economic value and environmental emission reduction benefit.
Owner:CHINA NERIN ENG

Method for preparing biodegradable polyurethane rigid foam from bamboo waste liquefaction products

The invention discloses a method for preparing biodegradable rigid polyurethane foam with liquefaction products of bamboo waste, which comprises the following steps: 1 mass portion of crude glycerin / polyethylene glycol liquefying solvent and 0.02-0.04 mass portion of concentrated sulfuric acid are added into a reaction vessel, heated till the temperature reaches 120-180 DEG C after a reflux condensation tube is connected to the reaction vessel; 0.2-0.5 mass portion of crushed and dried bamboo waste is added, reacted for 90-180min with stirring, taken out and cooled and neutralized by MgO tillbeing neutral; 1 mass portion of liquefaction products of bamboo waste, 0.02-0.08 portion of a dibutyl tin dilaurate / triethylene diamine mixed catalyst, 0.02-0.06 portion of silicone oil, 0.02-0.1 portion of water and 0.1-0.15 portion of fire retardant are added into a container, premixed for 20-30s when stirred at 2,000r / min, added with sufficient PAPI with the molar ratio between isocyanato-NCOin PAPI and hydroxyl group-OH in bamboo waste liquefaction products being 0.6-1.2, stirred for 10s-15s at 1,000r / min, put into a mould, foamed with standing at room temperature, placed for slaking and mould separating at room temperature for 24h-72h after reaction. The method fully utilizes resources, reduces liquefaction cost, and has a mild reaction temperature and stable liquefaction products;the performance of obtained foam meets the national standard and biodegradability.
Owner:NANCHANG UNIV

Technological system and technological method for performing cryogenic quick freezing on seafoods by air

The invention provides a technological system and a technological method for performing cryogenic quick freezing on seafoods by air. The technological system comprises an air compressor, an adsorptionsystem, a switch valve, a throttling valve, an expansion turbine, a cooler, a cryogenic heat exchanger, a gas-liquid separator, a storing tank, a seafood cryogenic quick freezing box and a heater, wherein the technological method comprises the following steps of compressing the air; then removing impurities including moisture, carbon dioxide and the like in the air, and finally compressing and cooling the air to obtain liquid air to perform cryogenic quick freezing on the seafoods. According to the technological system and the technological method disclosed by the invention, air is used to replace liquid nitrogen, so that the cryogenic quick freezing cost of the seafoods is reduced, and the situation that lives are damaged and properties are damaged caused by leakage of the liquid nitrogen is avoided.
Owner:HANGZHOU HONGSHENG ZHONGHONG NEW ENERGY CO LTD

Gas carbon dioxide liquefaction system and method

The invention discloses a gaseous carbon dioxide liquefaction system and method. The system includes a raw gas compressor, a circulation compressor, several parallel adsorption towers, a regeneration gas heater, a low-temperature heat exchanger, a rectification purification tower, and a plurality of on-off valves and several throttling valves, the methods include: 1) compression and cooling of carbon dioxide feed gas, 2) deep purification of gaseous carbon dioxide, 3) low-temperature liquefaction of gaseous carbon dioxide, 4) removal of non-condensable gases in liquid carbon dioxide, 5) Cyclic compression of low pressure carbon dioxide gas. The system of the present invention has the advantages of compact structure, high efficiency, small equipment investment and operating costs, and high reliability. The method of the present invention improves the safety of the system, and adopts a low-temperature rectification tower and a low-temperature heat exchanger to replace expensive refrigeration equipment, which is more efficient. It is beneficial to the liquefaction of gaseous carbon dioxide, greatly reduces the cost of gaseous carbon dioxide liquefaction, and realizes the recycling of carbon dioxide gas.
Owner:上海九宇泰碳科技有限公司

Method for co-liquefaction of coal and waste plastics under mild condition

The invention is a method for co-liquefaction of coal and waste plastics under a mild condition, which comprises the following steps: adding coal, waste plastics, lignosulfonate, a catalyst, and a solvent into an autoclave, introducing hydrogen to increase the pressure to 1.0-10.0 Mpa, heating to 300-450 DEG C for a liquefaction reaction, collecting the gas after the hydrogenation liquefaction test in the autoclave, analyzing the gas phase composition by a gas chromatography, collecting all the other liquefaction products in a filter paper cylinder, performing hexane and tetrahydrofuran solvent extraction in order by a soxhlet extraction device, wherein the substance soluble in hexane is oil, and the substances soluble in tetrahydrofuran but insoluble in hexane are asphaltene and preasphaltene, and calculating the total conversion rate of the liquefaction by using the amount of the insoluble substances in tetrahydrofuran. The invention allows the coal to perform a depolymerization reaction at a low temperature, and to be co-liquefied with waste plastics; the extraction rate of coal by solvents such as pyridine and the like is increased, and the coal liquefaction process is accelerated; not only the hydrogen consumption and production cost for coal liquefaction are greatly reduced, but also white pollution caused by waste plastics is solved.
Owner:LIUPANSHUI NORMAL UNIV

Preparation method of liquefied bio-based coated controlled release material

The invention discloses a preparation method of a liquefied bio-based coated controlled release material. When the bio-based raw material is subjected to liquefaction treatment, a volatilizable small molecular organic matter is selected as a liquefying agent, an ionic substance is wrapped by a microcapsule technology to serve as a catalyst, and the bio-based material is efficiently liquefied under the condition of lower temperature through ultrasonic treatment, stirring and pressurization; and then the small-molecule liquefying agent is separated out by utilizing an evaporation system to obtain a high-quality liquefied product, thereby preparing the coating material with a good controlled release effect. According to the invention, the liquefaction efficiency and the quality of the liquefied product are greatly improved, the defects in the prior art are effectively overcome, and the method is suitable for industrial popularization and application.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Liquefaction method of forest litter

ActiveCN103721999AConducive to liquefactionSolving the problem of liquefactionSolid waste disposalLitterPhenol
The invention discloses a liquefaction method of forest litter, and belongs to the technical field of bioengineering. The liquefaction method is characterized by comprising the following steps: 1) collecting outdoor naturally withering leaves as materials, baking and then crushing, and baking again at the same temperature so as to obtain litter powder; (2) putting phenol into a water bath at 50-80 DEG C to heat for 10-21 minutes; rapidly pouring into a reaction kettle when the phenol is completely fused into liquid, controlling the temperature of the reaction kettle at 85-110 DEG C, and then adding the litter powder; slowly dropwise adding concentrated nitric acid and hydrogen peroxide after evenly stirring and mixing, stirring for 50-75 minutes until the liquid becomes dark red liquid, adding sodium dodecyl benzene sulfonate, stirring, mixing and dissolving uniformly, and stopping heating until the liquid becomes clear black liquid; 3) cooling the liquid to room temperature, so as to obtain litter liquefied liquid. The liquefaction method of the forest litter is low in liquefaction cost, simple and feasible, accurate and reliable, and the forest litter can be effectively liquefied.
Owner:JIYANG COLLEGE OF ZHEJIANG A & F UNIV

Low temperature hydrogen adsorption for storage and hydrogen storing tank

The present invention discloses low-temp adsorption technique for storing hydrogen and its hydrogen storage tank, which can lower the storage pressure of hydrogen and raise the hydrogen storage density based on that the activated carbon or carbon fibres with high specific surface area has high adsorption power to hydrogen at the temp of liquefied nitrogen. The adsorbent bed is cooled to the temp of liquefied nitrogen by the liquefied nitrogen jacket surrounded by insulating layer. In the adsorbent bed there are heat exchanging metal tubes. On aerating hydrogen, liquefied nitrogen is introduced into them and on quick release of hydrogen, it is released into atmosphere. The high-safety decompressing valve is equipped to said jacket and hydrogen storage space. The pressure of stored hydrogen is 2.0 MPa. The stored hydrogen valume is 30 g per litre.
Owner:TIANJIN UNIV

Natural gas liquefaction system based on propane and iso-butane mixed pre-cooling

The invention discloses a natural gas liquefaction system based on propane and iso-butane mixed pre-cooling. A mixed refrigerant compression skid and a mixed precoolant compression skid are adopted tobe matched with a three-stage heat exchanger; by using the mixed refrigerant compression skid, natural gas to be liquefied is pre-liquefied and separated so that the separating efficiency of the natural gas to be liquefied is enhanced and the separating speed of the natural gas to be liquefied is increased; and then through precoolant cooling circulation of the mixed precoolant compression skid,a first heat exchanger, a second heat exchanger, a third heat exchanger and the mixed refrigerant compression skid, gas phase natural gas which is separated in the first stage is liquefied; by using the mixed precoolant compression skid to perform pre-cooling, the power loss of the mixed precoolant compression skid is reduced; through first-stage separation of liquid phase natural gas and by usinga mixed precoolant and a mixed refrigerant to exchange energy in the first heat exchanger, the second heat exchanger and the third heat exchanger, the structure is simple, the energy loss of the mixed refrigerant is reduced, the liquefaction efficiency is enhanced, and meanwhile, the liquefaction cost is reduced.
Owner:XI AN JIAOTONG UNIV

A method for direct liquefaction of biomass

The invention relates to the field of biological energy, in particular to a direct liquefaction method of biomass. Biomass slurry is prepared through steps as follows: straw is subjected to drying, primary smashing, compressing and secondary smashing in sequence and then is mixed with a hydrogenation catalyst and a vulcanizing agent, a mixture is obtained and added to a hydrogen-donor solvent to be ground into slurry, and the biomass slurry with straw concentration being 30wt%-60wt% is prepared. The straw is subjected to first compression and later secondary smashing initiatively with the treatment technology, so that size of the straw is substantially reduced, dispersion of the straw into an oil product is facilitated, content of the straw in the oil product can be increased, concentration of reaction materials is increased, delivery amount of the biomass in unit time by a pump is increased, and stable operation and delivery of the pump are guaranteed.
Owner:BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD

Internal combustion heating moving-bed type biomass pyrolysis liquefying apparatus

The invention discloses an internal combustion heating movable-bed biomass-pyrolysis liquefaction device which includes a reactor (7); the inside of the reactor is provided with an internal combustion pipeline (5); both the inlet and the outlet of the internal combustion pipeline (5) are arranged outside the reactor (7); a hopper (1) is arranged above the reactor (7); a blanking control valve (2)is arranged on the hopper (1); a rotary shaft (6) is arranged in the center of the reactor (7); conical hoppers (4) are arranged on the rotary shaft (6); conical material dividing umbrellas are arranged between the conical hoppers (4); the material inlet of the hopper (1) is arranged above the conical hoppers (4); a pyrolysis gas outlet (20) is arranged on the reactor (7); the bottom part of the reactor (7) is provided with a slag discharge opening (14); a cyclone separator (23) is connected on the gas pipeline of the pyrolysis gas outlet (20); the flue gas outlet of the cyclone separator (23) is connected into a condenser (26); an oil outlet and an outlet for non-condensable gas are arranged on the condenser (26); the outlet for non-condensable gas is connected to a gas buffer tank (28) through a draught fan. The biomass-pyrolysis liquefaction device reduces the liquefaction cost of bio-oil, has a simple structure and a low processing and manufacture cost as well as is simply and conveniently operated, managed and maintained.
Owner:HEFEI UNIV OF TECH

A method for direct liquefaction of coal and biomass

The invention relates to the technical field of clean energy, in particular to a process for smelting coal and biomass. The coal and biomass materials are subjected to 'crushing, compression and crushing again' treatment, and biomass coal oil slurry with high solid content and capable of being conveying stably by a pump is successfully obtained. The biomass coal oil slurry is subjected to first liquefaction reaction and second liquefaction reaction sequentially, so that the fact that the biomass is completely liquefied into liquid phase and the yield of the liquid is increased; through twice gas and liquid separation, oil products are enriched and the residues in the oil products are enriched and caked; and through first distillation and second distillation, the yield of the liquid oil isfurther increased, the residues in the liquid oil is further enriched and caked and is discharged to the outside through the bottom of a distillation device, the residues are prevented from entering the subsequent process and the residue solid content of the liquid oil is reduced; and through test, the yield of the liquid oil is above 98 percent by weight and the residue solid content of the liquid oil is less than 0.5 percent by weight.
Owner:BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD

Method for preparing polyurethane rigid foam from microwave liquefaction product of bamboo processing residue

InactiveCN103788327BShorten the liquefaction timeLower liquefaction costsActivated carbonPtru catalyst
The invention relates to a method for preparing rigid polyurethane foam by utilizing microwave liquefaction products of bamboo processing residues, which is characterized in that: polyethylene glycol 400, glycerol and ethylene carbonate mixed liquefaction agent, 98% sulfuric acid and dried and pulverized bamboo The processing residue is put into a three-neck bottle, and placed in a microwave liquefaction reactor with functions of condensation, stirring, and infrared temperature measurement for microwave heating. After the reaction is completed, neutralization reagents are added to neutralize the liquefied product to pH 7-8 , to obtain plant polyols. Then, mix and stir the plant polyol prepared above with polyether polyol, catalyst, curing agent, water, silicone oil, and foaming agent evenly, then add MDI, nano-activated carbon or titanium dioxide, mix and stir for 10s-15s, and put it into the mold. Stand at room temperature for foaming, curing, and demoulding to obtain rigid polyurethane foam. The invention makes full use of bamboo resources, reduces the cost of liquefaction, the liquefaction product can be used in all components, and realizes the goal of converting all components of bamboo processing residues into synthetic polyurethane raw materials. The product has the characteristic of being able to absorb PM2.5, and is a An environmentally friendly bio-based polyurethane rigid foam product.
Owner:RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY

Method for liquefying plant biomass and waste polyester mixed supercritical fluid

The invention relates to a novel method for liquefying a plant biomass and waste polyester mixed supercritical fluid, which comprises the following steps of placing plant biomass, polyester, a catalyst and a liquefying agent into a reaction kettle with a stirrer, raising the temperature of the reaction kettle to 230-280 DEG C, pressurizing to 5-8MPa, preserving the temperature under the state for5-40min, introducing cooling water when being naturally cooled to 100 DEG C after the liquefying is finished to cool the reaction kettle to room temperature; filtering reactant mixture in the reaction kettle by using a Buchner funnel; extracting obtained filtrate and residue by using an organic solvent; and distilling obtained extract liquor and extract by using a rotary evaporator, wherein the product remained in a distillation flask after the distillation is the biomass liquefied oil. The invention develops a new way of utilizing the plant biomass and the waste polyester, realizes the moderation of the liquefying condition of the plant biomass, improves the quality of the biological oil because of the molecular weight of the biological oil is lower, and improves the utilization efficiency of the plant biomass and the waste polyester.
Owner:莱鼎电子材料科技有限公司

Method and system for stably supplying air with low energy consumption

The invention relates to a method and system for stably supplying air with low energy consumption. According to the method, at least part of each of first heat exchange airflow, second heat exchange airflow and third heat exchange airflow is treated to obtain first airflow to be supplied and second airflow to be supplied. The system comprises a piston air booster, an efficient postcooler, a booster expansion turbine, a main heat exchanger with five separated fluid loops, an upper rectifying tower body, a lower rectifying tower body, a subcooler with four separated fluid pipes, a low-temperature liquid nitrogen and a low-temperature liquid nitrogen. Originally-wasted nitrogen generated by air separation is liquefied, the liquefaction cost of nitrogen is reduced as the cooling capacity of liquid nitrogen is fully utilized, benefits generated by the liquid nitrogen basically offset the cost increased by use of the liquid nitrogen, and the overall energy consumption is reduced on the whole.
Owner:湖北和远气体股份有限公司

Direct liquefaction method of biomass

ActiveCN108085040AImprove the efficiency of the liquefaction processGood suspensionLiquid hydrocarbon mixture productionHydrocarbon oils treatmentHydrogenSlurry
The invention relates to the field of biological energy, in particular to a direct liquefaction method of biomass. Biomass slurry is prepared through steps as follows: straw is subjected to drying, primary smashing, compressing and secondary smashing in sequence and then is mixed with a hydrogenation catalyst and a vulcanizing agent, a mixture is obtained and added to a hydrogen-donor solvent to be ground into slurry, and the biomass slurry with straw concentration being 30wt%-60wt% is prepared. The straw is subjected to first compression and later secondary smashing initiatively with the treatment technology, so that size of the straw is substantially reduced, dispersion of the straw into an oil product is facilitated, content of the straw in the oil product can be increased, concentration of reaction materials is increased, delivery amount of the biomass in unit time by a pump is increased, and stable operation and delivery of the pump are guaranteed.
Owner:BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD

A natural gas precooling device and precooling control method

The invention provides a natural gas precooling device and a precooling control method. The precooling device comprises a shield pump, a barrel pump, a heat exchanger and a cooling medium processing device. The precooling control method comprises the steps that pressure in the barrel pump is controlled to stay within a preset pressure range; the shield pump is controlled to transport a low-temperature liquid cooling medium in the barrel pump to the front end of a cold box system; the heat exchanger is controlled to utilize the low-temperature liquid cooling medium to conduct precooling treatment on natural gas at the front end of the cold box system, so that the natural gas of a preset temperature and a gaseous cooling medium of the preset temperature are output; and the cooling medium processing device is controlled to convert the gaseous cooling medium in the barrel pump into the low-temperature liquid cooling medium in order to facilitate reclamation. According to the natural gas precooling device and the precooling method, the natural gas can be precooled, the liquefaction ratio of the natural gas can be improved when precooled natural gas is subjected to liquefaction, recycling gas is reduced, and liquefaction cost of the natural gas is lowered.
Owner:重庆耐德能源装备集成有限公司
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