43results about "Pyroligneous acid production" patented technology

The present application relates to the field of agricultural technology, and provides a preparation method of a straw-derived organic calcium conditioner and application of the straw-derived organic calcium conditioner in red soil hardening repair, solves the problem that existing conditioners do not have a slow-release effect, and the effect of red soil hardening reduction, acid improvement and crop yield increase after application of the conditioner is poor, and comprises the following steps: S1, raw material pretreatment and compounding: pulverizing rice straw and mixing the rice straw with oyster shell powder to obtain mixed raw materials; S2, pyrolysis treatment is performed on the mixed raw materials, and volatile components generated in the pyrolysis process are recovered through a condensation system; S3, organic acid activation: the pyrolysis and carbonization products are mixed with an organic acid activation liquid to obtain activated carbonization products; S4, chimeric and mechanical activation: the activated carbonization products are mixed with polyethylene glycol and subjected to ball milling treatment; S5, polymer cross-linking reaction: polyvinyl alcohol and citric acid are added and mixed for reaction; and S6, shaping and granulation: shaping treatment is performed to obtain the straw-derived organic calcium conditioner.

Methods are provided to use water-free quench liquids to obtain pyroytic liquid products with reduced formaldehyde content. Products include liquids with improved hydroxyacetaldehyde content.

To provide a method and an apparatus for producing useful substances using wood as a raw material.SOLUTION: A method for producing useful substances comprises: a raw material input step of introducing wood chips into a treatment space S1 of a closed vessel 12; a first subcritical water treatment step of introducing steam at 120-200°C and 4-15 atm to subject the raw material to subcritical water reaction, thereby obtaining fulvic acid and humic acid; and a second subcritical water treatment step of introducing steam at 200-250°C and 15-30 atm to subject the raw material to subcritical water reaction, thereby obtaining pyroligneous acid.SELECTED DRAWING: Figure 1

The invention discloses an operation technology for coupling garden waste recycling and waste incineration. The operation technology comprises the following steps that S1, garden waste is divided into high-quality garden waste and low-quality garden waste; s2, the high-quality garden waste enters a drying machine, a pyrolysis machine and a condenser, and pyrolytic carbon, pyroligneous liquor and non-condensable gas are generated; s3, after the low-quality garden waste is dried, granulation treatment is conducted through a granulator; s4, the household garbage and the non-condensable gas enter an incinerator to be incinerated, and high-temperature flue gas is generated; s5, the hot flue gas enters a second flue and a pyrolysis machine and then enters a third flue to be converged with the main flue gas; s6, the hot flue gas is conveyed to a drying machine through an induced draft fan to be dried; and S7, the flue gas obtained after heat exchange is sent to a suction inlet of an induced draft fan, mixed in the induced draft fan and then discharged to the atmosphere. The waste heat and the heat value of the pyrolysis gas are utilized, the generating capacity of the incineration system is effectively improved while the garden waste is recycled, and the construction cost and the operation cost of the garden waste recycling system can be reduced by utilizing hardware of the incinerator and the flue gas purification system.

The invention relates to the technical field of charcoal preparation, in particular to charcoal dry distillation equipment, which comprises a dry distillation cellar body, a main flue, a gas-liquid separator, a combustible gas check valve, a combustible gas recovery pipe and a wood vinegar recovery pipe, a plurality of dry distillation tank bodies are arranged in the dry distillation cellar body, a cover body is arranged at the top of each dry distillation tank body, and a gas outlet is formed in the top of each dry distillation tank body. A water sealing groove is formed in the joint of the dry distillation tank body and the cover body, one end of the main flue is communicated with a gas inlet of the gas-liquid separator, the other end of the main flue penetrates through the cover body and is communicated with the interior of the dry distillation tank body, a gas outlet of the gas-liquid separator is communicated with a gas inlet of the combustible gas check valve through a first auxiliary flue, and a gas outlet of the combustible gas check valve is communicated with a gas outlet of the gas-liquid separator through a second auxiliary flue. A gas outlet of the combustible gas check valve is communicated with the combustible gas recovery pipe through a second auxiliary flue, the bottom of the gas-liquid separator and the bottom of the combustible gas check valve are both communicated with the wood vinegar recovery pipe through collecting pipes, and cooling devices are arranged outside the main flue, the gas-liquid separator and the combustible gas check valve.

The present disclosure provides methods and systems for capturing carbon dioxide. An example system includes: a pyrolysis device configured to produce syngas and bio-oil from biomass; a power generator configured to produce electricity by combusting at least one of the syngas or the bio-oil; and a carbon capture system configured to use the electricity to capture carbon dioxide from a gas.

The invention discloses a preparation method of nano-selenium particles. The preparation method comprises the following steps: S1, preparing a wood vinegar fermentation extracting solution which is used for providing an acidic reaction environment for synthesis of the nano-selenium particles and is used as a stabilizer and a morphology regulating agent; and S2, compounding the prepared pyroligneous fermentation extracting solution with ascorbic acid, sodium selenite, sodium carboxymethyl cellulose and cysteine, and carrying out controllable synthesis of nano-selenium particles in a stable system with a multi-component synergistic effect. The invention further discloses application of the obtained nano-selenium particles in selenium nutrient supplements and preparation of foliar fertilizers for selenium-rich agricultural product production.

A solvent stripping process has been developed for separating the pyrolysis oil in an extracted phase feed stream from an organic solvent used for extraction. The process involves using a stripping solvent to strip the organic solvent from the pyrolysis oil in a stripping column. The stripping column bottom stream comprising the pyrolysis oil and part of the stripping solvent can be separated into a vapor stream comprising the stripping solvent and a liquid stream comprising the pyrolysis and a portion of the stripping solvent. The stripping column overhead stream comprising the stripping solvent and the organic solvent can be separated in a recovery column into a recovery column overhead stream comprising the stripping solvent and a recovery column bottom stream comprising the organic solvent.

The invention discloses a pig manure recycling method based on a same-frequency resonance technology, and relates to the technical field of pig manure recycling. The pig manure recycling method comprises the following steps: step 1, carrying out solid-liquid separation on raw pig manure; 2, pushing the solid excrement into a same-frequency resonance reactor for cracking; step 3, performing multi-stage condensation separation on the organic steam to obtain a liquid-phase mixture and non-condensable combustible gas; step 4, extracting the liquid phase mixture; step 5, purifying and refining the non-condensable combustible gas; step 6, mixing solid activated carbon residues with the liquid manure obtained in the step 1 to prepare a carbon-based organic fertilizer; through the same-frequency resonance cracking technology, high-efficiency and harmless treatment of the pig manure is achieved, and the whole amount of the manure is converted into pipeline-grade natural gas, chemical raw materials rich in phenol / acetophenone and high-added-value products of functional carbon-based organic fertilizer.

A solvent stripping process has been developed for separating the pyrolysis oil in an extracted phase feed stream from an organic solvent used for extraction. The process involves using a stripping solvent to strip the organic solvent from the pyrolysis oil in a stripping column. The stripping column bottom stream comprising the pyrolysis oil and part of the stripping solvent can be separated into a vapor stream comprising the stripping solvent and a liquid stream comprising the pyrolysis and a portion of the stripping solvent. The stripping column overhead stream comprising the stripping solvent and the organic solvent can be separated in a recovery column into a recovery column overhead stream comprising the stripping solvent and a recovery column bottom stream comprising the organic solvent.

The utility model discloses a dehydration and edulcoration stem distillation assembly for wood vinegar production, including distillation tank, the upper portion fixed connection of distillation tank has the observation window, the observation window includes the window frame, and the inside sliding seal of window frame is inserted and has the plugboard, and the inside movable mounting of window frame has the extruding block, and the lower end movable embedding of extruding block is in the plugboard, and the upper portion threaded mounting of window frame has the bolt, and the lower end of window frame is fixedly connected with distillation tank, and the lower end of bolt is pressed in the upper end of extruding block. Loosen the bolt, make the bolt loosen extruding block, thereby make extruding block loosen plugboard, and the plugboard is drawn out, and the opening of distillation tank is opened, conversely, the plugboard is inserted back to the window frame, and the bolt is tightened again, and extruding block is pressed down tightly by bolt, and the lower end embedding of extruding block is in the plugboard, and the plugboard is guided further into the window frame by extruding block to the inside of window frame, and the opening of distillation tank is closed by plugboard, and the opening of distillation tank is conveniently opened or closed again.

The invention discloses a system and method for preparing a carbon-based humus material and a microbial fermentation culture medium through biomass co-processing, a biomass graded pyrolysis system is used for carrying out graded pyrolysis on agriculture and forestry biomass 1 to obtain pyrolysis oil gas 1, pyrolysis oil gas 2 and biochar, and the pyrolysis oil gas 1 is subjected to gas-liquid separation to obtain non-condensable gas and wood vinegar; the steam explosion system is used for carrying out biomass steam explosion pretreatment on agriculture and forestry biomass 2 and pyroligneous liquor, and acidolysis liquid and pretreated biological residues are obtained after solid-liquid separation; the anaerobic fermentation system is used for performing anaerobic fermentation on the pretreated biological residues and livestock and poultry manure biomass to obtain biogas, biogas slurry and biogas residues; the carbon-based humus preparation system is used for performing aerobic fermentation and humus on biogas residues and biochar to obtain a carbon-based humus material; and the microbial fermentation culture medium detoxification system is used for performing mixed detoxification treatment on the acidolysis solution and the biogas slurry to obtain the microbial fermentation culture medium. Co-treatment and resource utilization of the livestock and poultry manure and the agricultural and forestry biomass are realized.

The present application relates to foliar fertilizer preparation technical field, particularly to a kind of wood volatile gas spray coupling preparation foliar fertilizer method and device;Chelating aqueous solution is atomized and coupled with wood volatile gas condensation by first, second, third spraying device, the foliar fertilizer obtained rich in various mineral elements and effectively coupled wood volatile gas in organic acids, hydrocarbons, phenols and alcohols and other beneficial substances, with the characteristics of stable chemical properties, chemical composition is uniform, the method of spraying shell powder or chelating aqueous solution containing soluble potassium, magnesium, zinc, iron and other mineral element substances in high temperature section of wood volatile gas, and circulating spraying primary mixed solution, realizes the "one-stop" preparation of multi-component foliar fertilizer;Including chelating pumping unit, first spraying device, second spraying device, third spraying device, demisting pipe, vertical tube heat exchanger, circulating cold water unit, negative pressure fan unit, non-condensable gas processing unit, finished product nutrient solution storage tank, circulating pump group and mixed solution storage tank.

This invention relates to the field of biomass treatment technology, and more particularly to a tar self-recirculation biomass gasification device and method. The invention includes a gasifier, a spray-washing radiator, a wood vinegar condenser, and a jet mixer. The gasifier includes a waste heat evaporator and a biomass gasifier, the latter being internally divided into a dry distillation section, a redox section, and a combustion chamber. The spray-washing radiator includes a crude wood vinegar collection tank, an air-cooled radiator, and a demister. The dry distillation section and the redox section are respectively connected to the crude wood vinegar collection tank, the lower end of which is connected to the waste heat evaporator. The wood vinegar vapor outlet and tar outlet on the waste heat evaporator are respectively connected to the jet mixer via pipelines. The wood vinegar vapor outlet is also connected to the condenser via a pipeline, and the jet mixer outlet is connected to the combustion chamber. This biomass gasification device achieves in-situ high-temperature tar disposal and efficient waste heat utilization through tar separation and recirculation, realizing stable system operation and high-value utilization of by-products.

The invention relates to the technical field of biomass resource utilization, and discloses a clean production process for preparing charcoal from bamboo sawdust and co-producing biomass pyrolysis by-products, which sequentially comprises the steps of raw material pretreatment, firewood rod forming, high-temperature carbonization, flue gas resource and environment-friendly treatment and finished product treatment. The technical problems of low raw material utilization rate, high energy consumption, low pollutant emission and low additional value of byproducts in the prior art are solved by optimizing the raw material treatment flow, strengthening the regulation and control of the carbonization process and efficiently recovering flue gas waste heat and pyrolysis byproducts. Raw material refining treatment is achieved through laser particle size detection and PLC linkage control, flue gas waste heat is recycled through the fin type heat exchanger, the quality of bamboo charcoal and by-products is optimized in combination with the temperature-flow linkage regulation and control technology, the raw material utilization rate is increased, the energy consumption cost is reduced, and standard emission of pollutants is achieved; the economic and environmental benefits of resource utilization of the bamboo sawdust are obviously improved.

The utility model relates to the technical field of kilns, in particular to special pyroligneous liquor treatment equipment for kilns, which comprises a barrel, a circular laminate is fixed inside the barrel through bolts, an L-shaped liquor outlet pipe is sleeved inside the circular laminate in a penetrating manner, and the top end of the L-shaped liquor outlet pipe is connected with a funnel through a threaded groove. A cooling assembly is arranged in the top of the funnel in the barrel; the cooling assembly comprises a circular protective cover fixed in the cylinder through bolts, a circular block is arranged in the circular protective cover, a coiled pipe is embedded in the circular block, and a stainless steel conical cover is fixed to the bottom of the circular protective cover through bolts. Cooling water flows in the coiled pipe and cools the stainless steel conical cover through the circular block and the conical inner core, so that the stainless steel conical cover is in a low-temperature state, and smoke is rapidly cooled and liquefied when making contact with the low-temperature stainless steel conical cover.

The present disclosure provides methods and systems for capturing carbon dioxide. An example system includes: a pyrolysis device configured to produce syngas and bio-oil from biomass; a power generator configured to produce electricity by combusting at least one of the syngas or the bio-oil; and a carbon capture system configured to use the electricity to capture carbon dioxide from a gas.

The invention provides a solid fuel product set prepared from environmental garbage, which is characterized in that any one of A, B, C and D is selected to be combined with any one or more of the rest three materials, or / and only independent D is selected, and under the framework that the sum of the weight parts of the materials of the various varieties, namely WA + WB + WC + WD, is equal to 10 parts by weight, the weight part ratio of the materials of the various varieties, namely WA / WB / WC / WD, varies in the range of 0-9.9 / 0-8 / 0-6 / 0-10, so that the solid fuel product set prepared from the environmental garbage is obtained. A total solid fuel product set is formed; the material A, the material B, the material C and the material D specifically refer to that A is a biomass garbage material which is not smelly or is difficult to stink in an environment; b is a material obtained by fermenting biomass garbage in a deodorized and disinfected environment; c is waste plastic in environmental garbage or / and waste plastic of commercial purchase; d is at least carbon residue left after the A or / and the B are subjected to dry distillation; however, when only independent D is taken, namely, the weight part ratio of WA / WB / WC / WD is 0 / 0 / 0 / 10, the destructive distillation raw material of the corresponding D needs to contain the material B.

The invention relates to a method for producing natural gas, wood vinegar and a carbon-based organic fertilizer from pig manure. The breeding density of the pig industry in China is large, about 7billion pigs are slaughtered every year, and 50% of pigs are bred in China globally. The stinky excrement in the pig industry brings serious water quality and air pollution to the natural environment, and environmental protection becomes a high-voltage line of the pig industry. Live pig breeding manure is a pollution source of the atmosphere and the water quality environment, the pig manure produced throughout the country every year is 73,000,000 tons, and the utilization rate is less than 10%. The same-frequency resonance technology is adopted, pig manure can be decomposed in one step to generate natural gas, wood vinegar and activated carbon, and then the activated carbon and pig urine are mixed according to a scientific formula to produce the carbon-based organic fertilizer. According to the method, carbon consumption is avoided, zero emission and total recovery are achieved, the atom utilization efficiency is 100%, the method is an innovative thought for changing pig manure into new energy, and economic benefits are quite remarkable.

The present application discloses a device and method for rapidly preparing carbon from straws and recycling and treating flue gas and smoke dust. The device includes a pyrolysis and carbonization chamber and a collection and separation chamber which are communicated with each other; the pyrolysis and carbonization chamber and the collection and separation chamber are communicated with each other through a flue gas inlet; the collection and separation chamber includes a separation area in which a sprayer I is further disposed; and flue gas enters the separation area through the flue gas inlet and is then discharged. The method includes: introducing straws that are ignited outside into a pyrolysis and carbonization chamber; introducing flue gas produced by the pyrolysis and carbonization chamber in running into a collection and separation chamber via a flue gas inlet, and at least separately treating the flue gas in a separation area in the collection and separation chamber; and introducing the flue gas into the separation area, and converting main component-biomass energy in the flue gas into straw vinegar using a sprayer I in the separation area. In the present application, the gaseous biomass energy is continuously recycled and converted, and the main component-biomass energy in the flue gas is converted into the straw vinegar for recycling, so that the utilization rate of biomass energy of straws of the original device is increased by 30-33% to 50%.

The invention discloses a biomass cracking gas continuous producer and a production process thereof, the biomass cracking gas continuous producer comprises a combustion furnace and a cracking furnace, the cracking furnace comprises a furnace body and a heating pipe, the cracking furnace is provided with a front furnace door and a rear furnace door, the furnace body of the cracking furnace comprises a front furnace chamber and a rear furnace chamber, and a middle furnace door is arranged between the front furnace chamber and the rear furnace chamber; a mixed gas outlet is formed in the furnace wall of the front furnace chamber and communicated with the mixer main pipeline, and the front furnace door and the rear furnace door are each provided with a furnace door sealing hydraulic mechanism; the front furnace chamber and the rear furnace chamber are respectively communicated with a negative pressure fan through a negative pressure pipeline; a feeding ferry vehicle is arranged on the outer side of a rear furnace door of the cracking furnace and comprises a bottom frame, a feeding rail, a vehicle frame, a lifting frame and a driving mechanism. The production continuity is improved, and the yield is increased; various biomass raw materials such as wood, crop straws and livestock and poultry manure blocks can be treated; fuel gas, wood vinegar and wood tar generated in the production process are effectively collected, and the fuel gas is used as boiler fuel to supply heat.

The utility model relates to the technical field of clarification tanks, and discloses a wood vinegar three-stage clarification tank which comprises a sedimentation tank body and a filter box, one side wall of the sedimentation tank body is fixedly connected with the filter tank body, the other side wall of the sedimentation tank body is fixedly provided with a fixing plate, the top of the filter tank body is fixedly provided with a supporting frame, and the supporting frame is fixedly connected with the filter tank body. And a mounting plate is fixedly mounted at the top of the filter box. According to the three-stage clarification tank for the pyroligneous liquor, the vibration assembly is arranged, after the vibration assembly is used, under vibration of a vibration motor and connection of a telescopic spring and a connecting spring to the connecting block and a check block, the connecting block transversely moves along the outer surface of a transverse rod, and the transverse movement of the connecting block enables a connecting rod to correspondingly rotate; the distance between the filter plate and the filter tank body is shortened or enlarged, so that the filter plate can repeatedly bounce up and down, and the phenomenon that impurities stay in filter holes in the filter plate to cause blockage and influence the filtering process of wood vinegar is avoided.

The invention discloses a catalytic cracking method of low-density high-purity biomass liquid fuel, which relates to the field of biomass energy and comprises the following steps: S1, selecting a biomass raw material: crushing the raw material into powder particles with the length of 5-80 meshes or 0.5-3mm by using a crusher, and storing the powder particles in a stock bin; according to the catalytic cracking method for the low-density and high-purity biomass liquid fuel, the cracking efficiency and the product purity are improved by accurately controlling the cracking temperature and the catalyst proportion, and the produced biomass liquid fuel has the characteristics of low density and high purity; through the multi-stage cracking and separation steps, complete decomposition of biomass and uniformity of products are ensured; the heat carrier and the catalyst are recycled, so that the production cost is reduced; meanwhile, by-products such as wood vinegar, biological heavy oil and natural gas are effectively recycled, the overall resource utilization rate is increased, and the requirements of industrial and civil fields for high-quality biofuel are met.

The utility model discloses a bamboo vinegar liquid collecting device in the bamboo charcoal firing process, and relates to the technical field of bamboo vinegar liquid production, the bamboo vinegar liquid collecting device comprises a supporting frame, a collecting pipe is fixedly installed on the supporting frame, a collecting bottom shell is fixedly installed on the outer wall of the collecting pipe, and a condensation outer shell is fixedly installed on the collecting bottom shell; an exhaust outlet is fixedly formed in the end, away from the collecting pipe, of the condensation shell, a plurality of heat dissipation blades are arranged on the outer wall of the condensation shell, and an inner condensation barrel is fixedly installed on the inner wall of the condensation shell. And heat dissipation blades are arranged on the outer side of the condensation shell to further reduce the temperature of the condensation shell, so that the condensation shell and the inner condensation barrel can cool the steam at the maximum efficiency, and the collection efficiency of the bamboo vinegar is improved.

The invention discloses a substance and energy coupling recycling system in a fixed bed biomass gasification process, and relates to the technical field of biomass gasification. The system comprises a gasification furnace, a preheating tower, a purification tower, a phenol water stripping tower, an electrical tar precipitator, an indirect cooling tower, a phenol water tank and a settling tank which are communicated through pipelines, biomass gasification reaction, crude synthesis gas preheating and cooling, solid impurity removal, phenol steam stripping, tar electrostatic trapping, light organic matter condensation separation, phenol-containing waste liquid heating gasification and heavy waste liquid settling separation are synergistically achieved, and substance and energy coupling circulation is formed. The method is mainly used for biomass energy utilization and production of refined synthesis gas, a methanol-formaldehyde mixed solution, wood vinegar, wood tar and other products, and meanwhile efficient recovery and cyclic utilization of resources are achieved.

The invention provides clean production combined equipment for preparing biomass solid fuel, which is characterized in that the combined equipment is arranged in a group of containers with auxiliary functions of noise reduction, dust removal and convenience in maintenance / relocation; different combinations of containers carrying one or more of coarse crushing, fine crushing, impurity removal, drying, or fermentation, dry distillation carbonization and blending, and then with various functional unit machines for granulation and packaging are connected in series / in parallel to form a production line, and the production line is suitable for common single materials such as straw and deadwood, is more suitable for various mixed materials, and has the advantages of being simple in structure, convenient to operate and high in production efficiency. For example, any one of four environmental wastes A, B, C and D can be combined with any one or more of the rest three materials to prepare the solid fuel, the A is a biomass waste material in an environment which is not smelly or is difficult to stink, the B is a material obtained by fermenting the biomass waste in a deodorized and disinfected environment, and the C is a material obtained by fermenting the biomass waste in an environment which is not smelly or is difficult to stink. C is carbon residue obtained by dry distillation of A / B; and D is waste plastic in environmental garbage / waste plastic collected from the society.

The invention relates to the technical field of comprehensive utilization of biomass resources and fine chemical engineering, and particularly discloses a preparation process of refined bamboo vinegar. A refined bamboo vinegar preparation technology comprises the following steps that S1, phyllostachys pubescens processing leftover materials are crushed, and crushed bamboo materials are obtained; s2, the crushed bamboo materials are subjected to carbonization treatment, and smoke and bamboo charcoal are generated; s3, the flue gas is subjected to condensation treatment, and a bamboo vinegar stock solution is obtained; s4, crushing the bamboo charcoal to obtain bamboo charcoal coarse powder; s5, sieving the bamboo charcoal coarse powder to obtain bamboo charcoal powder; s6, the bamboo vinegar stock solution and the bamboo charcoal powder are subjected to mixed adsorption treatment, and an adsorbed mixed solution is obtained; and S7, filtering the adsorbed mixed solution to obtain the refined bamboo vinegar. The preparation process disclosed by the invention can be used for efficiently converting bamboo wood processing wastes and producing high-purity refined bamboo vinegar, so that the advantages of process closed loop, resource conservation, cost reduction and efficiency improvement are realized while high quality of the product is ensured.

The invention provides a cleaning product set prepared from environmental garbage, which is characterized in that the set comprises a solid fuel product subset 1; or / and the other subset 2 comprising crude pyroligneous liquor, or / and refined pyroligneous liquor, or / and an impurity-removed emulsified tar product; the subset 1 is a total solid fuel product set 1 formed by combining any one of the four materials A, B, C and D with any one or more of the rest three materials, or and only taking independent C, and forming a total solid fuel product set 1 according to different changes of the weight part ratio 'WA / WB / WC / WD' of the various materials within the range of '0-9.9 / 0-8 / 0-10 / 0-6' under the frame that the sum 'WA + WB + WC + WD' of the weight parts of the various materials is equal to 10 parts by weight; the A, the B, the C and the D specifically refer to: A is a biomass garbage material in an environment which is not smelly or is more difficult to stink, B is a material obtained by fermenting the biomass garbage in a deodorized and disinfected environment, C is a carbon residue material at least left after the A or / and the B are subjected to dry distillation, and D is waste plastic in environmental garbage or / and waste plastic purchased commercially.

The invention discloses a bamboo vinegar and bamboo tar separating and collecting device which comprises at least one reaction kettle, a tar cooling tower, a low-temperature cooling tower, a medium-temperature cooling tower, a secondary evaporation kettle and a high-temperature cooling tower. Other connecting ports of the four-way pipe are respectively connected with gas inlets of the tar cooling tower, the low-temperature cooling tower and the medium-temperature cooling tower through pipelines, and each pipeline is provided with a control valve which is used for opening the pipeline leading to the corresponding cooling tower according to the real-time temperature of gas discharged from the reaction kettle so as to realize directional condensation and collection of different fractions; the four-way pipe is linked with the electric valve and the multi-stage cooling tower, three bamboo vinegar fractions and high-purity tar are synchronously captured in the carbonization process, the post-treatment cost and pollution burden of a traditional distillation and extraction process are thoroughly eliminated, and an economical and feasible green manufacturing closed-loop solution is provided for small and medium-sized enterprises.