83results about "Pyroligneous acid production" patented technology

To provide a method for producing purified wood vinegar.SOLUTION: A method for producing purified wood vinegar comprises: a first step of obtaining an upper layer liquid by contacting crude wood vinegar with a chlorine-containing organic solvent and performing liquid-liquid separation; and a second step of removing the dissolved chlorine-containing organic solvent from the upper layer liquid.SELECTED DRAWING: None

A pyroligneous mixture comprising a combination of a pyroligneous liquor and a pyroligneous tar is disclosed. Also disclosed is a lixiviant composition comprising a combination of a pyroligneous liquor and a pyroligneous tar. The lixiviant composition may be used to extract metals from spent lithium ion batteries.

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.

This disclosure relates to a mobile pyrolysis plant and related systems and methods. An example method includes: providing a mobile pyrolyzer configured to traverse a field where biomass is grown; providing harvested biomass to the mobile pyrolyzer as the mobile pyrolyzer traverses the field; subjecting the harvested biomass to a fast pyrolysis process in the mobile pyrolyzer to generate biochar, bio-oil, and syngas as the mobile pyrolyzer traverses the field; and applying the biochar to the field as the mobile pyrolyzer traverses the field.

The present invention includes the design and manufacture of a laboratory type fixed bed pyrolysis reactor, pyrolysis processes for experimental purposes at desired temperatures, obtaining biochar and pyrolysis liquid, obtaining wood vinegar from the obtained pyrolysis liquid by precipitation process and analysing these products and using them in scientific trials. It is a fixed bed pyrolysis system, which can be used in the production of pyrolytic liquid, biochar and pyrolysis gas, wherein pyrolysis trials were successfully carried out, wherein biomass wastes and residues placed in the fixed bed reactor chamber located in the body consisting of a diamond sheet body providing heat conservation are subjected to pyrolysis process in the temperature range of 300-700 °C and wherein the resulting gas can be transmitted to the cooling unit consisting of copper spiral pipes with a closed transmission system and pyrolytic liquid can be produced by condensation process and wherein wood vinegar is obtained by the precipitation process applied to this liquid, wherein biochar is obtained in the reactor chamber after the pyrolysis process.

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 present invention discloses an oxygen-free medium-temperature downdraft pyrolysis device, including a pyrolysis furnace, a grate is arranged in the pyrolysis furnace, a feed port is arranged at the pyrolysis furnace above the grate, a closed feeder is arranged at the feed port, a discharge port is arranged at the pyrolysis furnace below the grate, a closed discharger is arranged at the discharge port, and an oxygen-free medium-temperature gas source mechanism is arranged outside the pyrolysis furnace and supplies flue gas to the pyrolysis furnace, the oxygen-free medium-temperature gas source mechanism includes a burner, and the pyrolysis furnace is provided with a combustible gas collector below the grate to form a downdraft structure; the combustible gas collector is guided outward to the outside of the pyrolysis furnace through a gas collection pipeline. The present invention forms a medium-temperature temperature field in the pyrolysis furnace, which can effectively control the precipitation temperature, ensure that the biomass in the pyrolysis furnace is at the optimal precipitation temperature for precipitating combustible gas, and thus ensure the precipitation effect of the combustible gas.

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 wood vinegar component regulation and control method, and belongs to the technical field of biomass pyrolysis. The preparation method comprises the following steps: (1) preparing modified red mud loaded with a nano material; (2) pretreating the biomass; and (3) catalyzing the biomass pretreated in the step (2) to be pyrolyzed in an inert gas protection environment by using the modified red mud prepared in the step (1) as a catalyst. According to the method, in the biomass pyrolysis process, the modified red mud is added to serve as a catalyst to catalyze biomass pyrolysis, components of the wood vinegar obtained through biomass pyrolysis are effectively regulated and controlled, the yield of target components in the wood vinegar is increased, and therefore the wood vinegar with the high additional value is obtained; the catalytic stability of the catalyst is improved, and the biomass pyrolysis efficiency is promoted.

The invention relates to a process for producing pyrolysis oil, pyrolysis gas and pyrolysis coke, in which process a starting material, which substantially comprises biomass, is supplied to a pyrolysis reactor in the upper region thereof. The reactor comprises a substantially vertical reactor chamber which is substantially tubular. A packed bed of a bulk material is present in the reaction chamber, which bulk material comprises the starting material to be pyrolysed and, optionally, the pyrolysis coke. This bulk material is thermally treated in the pyrolysis reactor, wherein the pyrolysis coke, the pyrolysis gases and the pyrolysis vapours are formed from the starting material to be pyrolysed, and wherein the bulk material, the pyrolysis gases and the pyrolysis vapours are conducted through the reaction chamber from top to bottom. The movement of the bulk material is brought about substantially by gravity, and the movement of the pyrolysis gases and the pyrolysis vapours is brought about by the gas pressure that is building up. The thermal treatment takes place at least at a first temperature level of 300 to 650°C and subsequently at a second temperature level, which is higher than the first temperature level, of 450 to 900°C.

Agricultural and forestry straw, brush wood, weeds, waste books and newspapers and waste clothes are sorted and cut into 3-5 cm strip blocks, the strip blocks are cleaned and squeezed to be dry, then the strip blocks are conveyed into a closed interlayer stainless steel container, the container is 1 m wide and 20 m long, electric stove wires are fully distributed on the upper, lower, left and right sides of the stainless steel container for heating, two grooves are formed in the bottom in the container, and a wood vinegar outlet is reserved in the tail of the container. The tail end of the upper part in the container is provided with an exhaust hole, various gases are exhausted into a gas large tank, materials run for 40 minutes along with a crawler belt in the container, the temperature is kept at 300-600 DEG C according to the types of the materials, 1 ton of carbon powder is generated for producing activated carbon and carbon fertilizer per 3 tons of materials, and 500 kilograms of pyroligneous liquor is used for producing organic biological insecticide. 1300 cubic miscellaneous gases (hydrogen, oxygen, methane and carbon monoxide) in the 2600 cubic gases are used for power generation.

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 present invention discloses a self-produced gas combustion linkage pyrolysis gasification device, which includes a pyrolysis furnace. A grate is arranged inside the pyrolysis furnace, and the grate is an active grate. A feed inlet is provided at the pyrolysis furnace above the grate, and a closed feeder is equipped at the feed inlet. A discharge port is provided at the pyrolysis furnace below the grate, and a closed discharger is equipped at the discharge port; it also includes an anaerobic medium-temperature gas source mechanism arranged outside the pyrolysis furnace and supplying flue gas to the pyrolysis furnace. A combustible gas collector is also arranged inside the pyrolysis furnace, and the combustible gas collector is led out to the outside of the pyrolysis furnace through a gas collection pipeline; a return branch pipe is connected in parallel to the gas collection pipeline, and the return branch pipe is connected to the input pipeline of the anaerobic medium-temperature gas source mechanism. The present invention realizes the supply of anaerobic medium-temperature flue gas to the pyrolysis furnace by the combustion of self-produced gas, forms a medium-temperature temperature field inside the pyrolysis furnace, and can effectively control the precipitation temperature.

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 invention relates to the technical field of bamboo sawdust, and discloses a high-temperature bamboo charcoal preparation and flue gas recycling process for all-component utilization of bamboo sawdust, which realizes all-component efficient utilization of bamboo sawdust, improves the resource utilization rate, not only produces high-quality bamboo charcoal, but also realizes comprehensive utilization of flue gas through a multi-stage separation and deep processing technology. Wood vinegar, wood tar (containing aromatic compounds such as anthracene and naphthalene) and combustible gas are recycled from the smoke, graded conversion of components such as cellulose and hemicellulose in the bamboo sawdust is achieved, and resource waste is avoided. The problem that a traditional process only focuses on bamboo charcoal production and neglects byproduct recovery is solved, and the utilization rate of the bamboo scraps is increased to the maximum. In the bamboo sawdust pretreatment stage, through fine screening, cleaning and smashing, the uniformity of the raw materials is ensured, and a stable basis is provided for subsequent carbonization. High-temperature directional carbonization is combined with water vapor activation, so that the bamboo charcoal forms a rich microporous structure, the specific surface area is remarkably increased, the pH value of the finished bamboo charcoal is stabilized at 6.5-7.0, and the bamboo charcoal can be directly applied to sewage treatment, air purification and other scenes.

The invention relates to a preparation process of high-acidity low-tar refined bamboo vinegar. The invention discloses a bamboo vinegar refining process, which comprises the following steps: adding 3-8% of sodium chloride into a bamboo vinegar stock solution, salting out for 48 hours, filtering, and carrying out reduced pressure distillation at 75 DEG C and-0.06 Mpa, so that the pH value (less than or equal to 3) of the stock solution and the organic acid content (more than or equal to 95%) are remarkably reserved, and meanwhile, the tar content is reduced to 0.1% or below. The process solves the problems of large loss of active ingredients and high tar residue in the traditional distillation method, and is suitable for industrial production of the high-acidity low-tar refined bamboo vinegar.

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 utility model discloses special pyroligneous liquor treatment equipment for a kiln, which comprises the kiln, a recycling box is arranged on the right side of the kiln, and a water receiving tank is arranged in the recycling box. The heating tank and the water receiving tank are arranged, the first water pump can pump water flow in the cooling box into the water receiving tank through the first water pipe, gas in the kiln enters the stirring tank through the heating tank, meanwhile, the water flow in the water receiving tank is heated and boiled into boiled water, and hot water can be discharged for use through the drainage valve; the waste heat in the gas is recycled, the air in the stirring tank can be stirred through the stirring rod, the gas is cooled in the stirring tank firstly, the situation that the temperature of the gas entering the cooling box is too high is prevented, the water flow in the cooling box is cooled through the condenser, and the gas is pumped into the collecting pipe through the exhaust fan and the first gas pipe; the collecting pipe is spirally arranged, so that the contact area between the gas and the pipe wall is increased, and the gas cooling and collecting efficiency is improved.

The invention belongs to the technical field of agricultural environmental pollution control and sustainable planting, and provides a biomass charcoal-wood vinegar composite material preparation method, which comprises: dipping biomass charcoal in a calcium salt solution, and carrying out a reaction to obtain modified biomass charcoal; dipping the modified biomass charcoal in a wood vinegar solution, and drying after complete adsorption to obtain the biomass charcoal-wood vinegar composite material. According to the composite material, modified biomass charcoal is taken as a carrier and cooperates with interface regulation and complexation of pyroligneous liquor, so that a resistance and control system with adsorption, slow release and migration barrier functions is constructed. The preparation method comprises the following steps: firstly, by utilizing the loading capacity of biomass charcoal on metal salt, endowing the biomass charcoal with selective adsorption performance on neonicotinoid pesticides through metal modification; then the surface of the carbon material is treated with diluted wood vinegar, a stable functional liquid film coating layer is formed, and therefore cooperative regulation and control of composite adsorption and interface migration resistance are achieved. The prepared material can be directly applied to vegetable cultivation soil, and the resistance and control activity of the material is further enhanced through periodic activation.