131results about "Pyroligneous acid production" patented technology

The utility model discloses a biomass poly-generation wood vinegar preparation device which comprises a heating box, a liquid storage box and a control panel, a conveying cylinder is installed in the heating box, the two ends of the conveying cylinder both penetrate through and extend to the outside of the heating box, a feeding assembly is arranged in the conveying cylinder, and the liquid storage box is connected with the liquid storage box. An air guide pipe communicating with an inner cavity of the conveying cylinder is fixed to the upper portion of the side face of the conveying cylinder, and the end, away from the conveying cylinder, of the air guide pipe penetrates and extends out of the heating box. According to the biomass poly-generation wood vinegar preparation device, biomass is carbonized in an anoxic environment to generate flue gas, the high-temperature condition in the carbonization environment can be guaranteed in the process, the carbonization requirement of the biomass is met, flue gas condensation can be assisted after the flue gas is generated, preparation of the wood vinegar is facilitated, and the biomass poly-generation wood vinegar preparation device is suitable for industrial production. Waste gas left after the wood vinegar is separated from the flue gas can be discharged from the preparation device so as to be further treated, and the generated wood vinegar is stored in a low-temperature environment, so that the influence of high temperature in the flue gas on the wood vinegar is prevented.

According to the preparation method of the special biochar base fertilizer for saline-alkali soil improvement, the porous characteristic of biomass charcoal and the characteristic that wood vinegar can adjust the pH value of soil are utilized, the special biochar base fertilizer for saline-alkali soil improvement is prepared, and the preparation method is simple, low in cost and environmentally friendly; the obtained charcoal-based fertilizer can be used as a soil conditioner for improvement and recovery of large-area saline-alkali soil. When the biochar base fertilizer is used for saline-alkali soil cotton planting, it is found that the stem diameter, plant height and leaf chlorophyll content of cotton are remarkably increased, the pH, conductivity and volume weight of soil are remarkably reduced, and the porosity and saturated water-holding capacity of the soil are remarkably increased; the biochar-based fertilizer has the potential of adjusting the acid-base imbalance of the saline-alkali soil, improving the soil structure, increasing the organic matter content of the soil, improving the soil fertility and increasing the crop yield, and a sustainable, economical and effective solution can be provided for agricultural production.

Producing a heavy aromatic fraction from fast pyrolysis oil includes combining fast pyrolysis oil and a first solvent to yield an emulsion; heating the emulsion to yield an organic phase and an aqueous phase; vapor stripping the organic phase with a second solvent to yield the heavy aromatic fraction and a condensate comprising the first solvent, the second solvent, and water; concentrating the aqueous phase to yield a water-soluble organic fraction, water, and light ends comprising organic compounds having 1-6 carbon atoms; combining the condensate with the light ends to yield a mixture; distilling the mixture to yield a first stream comprising the first solvent and water and a second stream comprising the second solvent; combining the first stream with the fast pyrolysis oil to yield the emulsion; and combining the second stream with the organic phase to yield the heavy aromatic fraction and the condensate.

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 discloses an updraft pyrolysis gasification system, 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 discharge port is arranged at the pyrolysis furnace below the grate, 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, the inlet of the burner is connected to an input pipeline for supplying gas to the burner, the gas is burned in the burner to produce flue gas, the outlet of the burner is connected to a flue gas output pipeline, the flue gas delivery pipeline is introduced into the pyrolysis furnace and is located below the grate, and the end of the flue gas delivery pipeline is connected to a medium-temperature heater; the pyrolysis furnace is provided with a combustible gas collection port at the position above the grate to form an updraft structure; the combustible gas collection port is exported to the outside of the pyrolysis furnace through the gas collection pipeline. The present invention ensures the precipitation effect of combustible gas and realizes comprehensive resource processing.

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.

The invention discloses a side-suction oxygen-free medium-temperature pyrolysis furnace, comprising 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 comprises a burner, the inlet of the burner is connected to an input pipeline for supplying gas to the burner, the outlet of the burner is connected to a flue gas output pipeline, the flue gas delivery pipeline is introduced into the pyrolysis furnace and is located below the grate; the pyrolysis furnace is provided with a combustible gas collection mechanism at the side wall located above the grate, forming a side-suction structure. The invention effectively ensures that the biomass in the pyrolysis furnace is at the optimal precipitation temperature for separating out combustible gas, and at the same time avoids the risk of explosion caused by the formation of gas pockets of combustible gas in the pyrolysis furnace.

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

Producing a heavy aromatic fraction from fast pyrolysis oil includes combining fast pyrolysis oil and a first solvent to yield an emulsion; heating the emulsion to yield an organic phase and an aqueous phase; vapor stripping the organic phase with a second solvent to yield the heavy aromatic fraction and a condensate comprising the first solvent, the second solvent, and water; concentrating the aqueous phase to yield a water-soluble organic fraction, water, and light ends comprising organic compounds having 1-6 carbon atoms; combining the condensate with the light ends to yield a mixture; distilling the mixture to yield a first stream comprising the first solvent and water and a second stream comprising the second solvent; combining the first stream with the fast pyrolysis oil to yield the emulsion; and combining the second stream with the organic phase to yield the heavy aromatic fraction and the condensate.

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 discloses a biomass gasification furnace with preheating and recycling function, 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; a combustible gas collector is also arranged in the pyrolysis furnace; a preheating sleeve is arranged outside the closed feeder, a preheating tube group is arranged at the preheating sleeve, a cooling sleeve is arranged outside the closed discharger, a cooling tube group is arranged at the cooling sleeve, the water inlet and outlet of the preheating tube group are connected to the heating path of the heat exchanger, and the water inlet and outlet of the cooling tube group are connected to the cooling path of the heat exchanger. The present invention provides an oxygen-free medium-temperature heat source for the pyrolysis furnace by a burner, and can realize preheating and recycling of carbon slag, thereby realizing resource and comprehensive utilization.

The utility model belongs to the field of biomass carbonization equipment, and particularly relates to a production line for tail smoke treatment of a carbonization kiln and co-production of wood biomass and organic matters. The tail smoke treatment production line comprises dust removal equipment connected to the tail end of the rotary kiln and further comprises a diverter valve, the diverter valve at least comprises an inlet and two outlets, the first inlet is connected to a discharging pipe of the dust removal equipment, and the first outlet and the second outlet are used for being connected with a circulation pipeline and a separation pipeline respectively. The tail end of the circulating pipeline is communicated to a combustion chamber at the front end of the rotary kiln through a flue gas buffer device; and multi-stage separation equipment and collection equipment are arranged on the circulating pipeline. The production line for co-production of the wood biomass and the organic matter comprises a carbonization kiln, the kiln comprises a combustion chamber arranged at the kiln head and a rotary kiln, the rotary kiln comprises a middle kiln body part, a discharge port located at the kiln head and a feed port located at the kiln tail, the kiln tail is further provided with a smoke exhaust port, and the smoke exhaust port is connected with the tail smoke treatment system. By carbonizing the wood biomass and treating the tail smoke, a plurality of organic matters are obtained, the cost consumption is reduced, and the benefit is increased by recycling the wood biomass.

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 relates to the technical field of biomass resource utilization, and provides a wood vinegar refining and purifying process which comprises the following steps: adding ethyl acetate into crude wood vinegar for extraction, and performing rotary evaporation and concentration to obtain crude concentrated wood vinegar; adding a sodium bicarbonate aqueous solution into the crude concentrated pyroligneous liquor for extraction to obtain primary refined pyroligneous liquor; adding a composite acid solution into the primary refined pyroligneous liquor, adding ethyl acetate again, extracting, and carrying out rotary evaporation concentration to obtain secondary refined pyroligneous liquor; and adding modified biomass activated carbon into the secondary refined wood vinegar, and carrying out water bath reaction, standing and suction filtration to obtain the refined wood vinegar. The sugar beet pulp is used as a raw material, the crude wood vinegar is prepared by controlling fermentation conditions, and the content of effective components is increased; meanwhile, the crude wood vinegar can be simply, rapidly and effectively refined through the refining and purifying technology, the treatment process is mild in condition, and harmful substances such as tar and the specific smoke flavor of the wood vinegar are effectively removed.

The present invention discloses a method for treating garbage by dry distillation, comprising the following steps: S1. a wood vinegar spray deodorization device is arranged on a garbage pretreatment pool to deodorize and sterilize the garbage; S2. the garbage is transported to a plurality of hot oil dry distillation kilns, and a heat-conducting oil boiler is used to heat the heat-conducting oil pipe in the hot oil dry distillation kiln; S3. in step S2, the heating of the plurality of hot oil dry distillation kilns is divided into three stages: low-temperature heating, medium-high-temperature heating, and high-temperature cracking heating, and an auxiliary heating chamber is arranged outside the plurality of hot oil dry distillation kilns, and the hot gas of the hot oil dry distillation kiln in the high-temperature cracking stage can be used through the auxiliary heating chamber to perform auxiliary heating on the hot oil dry distillation kiln in the low-temperature heating stage; S4. a condenser is arranged to condense the generated gas in each hot oil dry distillation kiln and separate and extract wood vinegar and tar. The present invention also discloses a garbage dry distillation treatment system. The garbage dry distillation treatment method and system of the present invention belong to the technical field of garbage treatment, have no waste gas emission, and save energy.

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.

The utility model discloses a device for preventing a biomass dry distillation pipeline from being blocked, which comprises a separating tower and a spraying tank, three layers of spraying components are arranged at the upper part of an inner cavity of the separating tower, and the spraying components are connected with the bottom of an inner cavity of the spraying tank through a pipeline; the bottom of the inner cavity of the separation tower is connected with the wood tar storage tank through a pipeline; one side of the bottom side of the inner cavity of the separation tower is connected with the top of the inner cavity of the spraying tank through a communicating pipe; a gas phase outlet in the top of the inner cavity of the separation tower is communicated with the bottom end of a condensation straight pipe through a pipeline, and the condensation straight pipe is fixedly connected to the top of the inner cavity of the spraying tank in the vertical direction; a spiral heat exchange pipe is wound on the outer portion of a main body of the condensation straight pipe, and a spiral clamping cavity is formed between the spiral heat exchange pipe and the outer wall of the condensation straight pipe. According to the device, mixed gas can be effectively cooled through three-layer spraying washing, wood tar precipitation and wood vinegar collection are accelerated, the production efficiency can be improved, pipeline blockage is reduced, and the production cost is reduced.

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.