Pyrolysis reactor for biomass liquid fuel

Abstract

The utility model relates to the technical field of biomass fuel preparation, in particular to a biomass liquid fuel pyrolysis reactor which comprises a reaction box, a dust filtering screen plate is fixedly connected to the interior of a filtering box, a heat storage ceramic assembly is fixedly connected to the interior of a heat storage cylinder, a heat conduction assembly is fixedly connected to the interior of the heat storage ceramic assembly, and the heat conduction assembly is fixedly connected to the interior of the heat storage cylinder. And the back surface of the reaction box is fixedly connected with a condensation box. According to the pyrolysis reactor for the biomass liquid fuel, a biomass material is put into the pyrolysis kettle body to be heated and pyrolyzed, generated organic gas is introduced into the combustion kettle to be fully combusted, high-temperature mixed water vapor and part of smoke substances are obtained, smoke particles are filtered and collected through the dust filtering screen plate, then the remaining high-temperature water vapor is introduced into the heat storage barrel, and the heat storage barrel is used for storing heat; the heat storage ceramic assembly and the heat conduction assembly are used for absorbing and storing water vapor heat and then conducting heat exchange and utilization, meanwhile, the water vapor obtained after heat exchange is introduced into the condensation box to be condensed and collected, and therefore the recycling rate of biomass pyrolysis reaction products is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass fuel preparation, in particular to a pyrolysis reactor for biomass liquid fuel. Background Art

[0002] Biomass fuel refers to the burning of biomass materials as fuel, which are generally agricultural and forestry wastes. It is mainly different from fossil fuels and is a new type of clean fuel that can be directly burned. It can be divided into solid particles, liquid and organic gas fuel forms. Among them, biomass liquid fuel is formed by pyrolysis reaction of biomass materials in a pyrolysis reactor.

[0003] After searching, a biomass fuel pyrolysis reactor is disclosed in a utility model patent with Chinese patent publication number CN204224526U. The biomass fuel pyrolysis reactor in the utility model patent is provided with a burner on a double-layer insulation layer, and a stirring shaft is used to accelerate the combustion efficiency. However, the structure of the pyrolysis reactor is relatively simple, wherein the pyrolysis reaction needs to be heated in a low-oxygen environment, and the low-oxygen environment will cause the burner to be unable to maintain the combustion state normally. Therefore, the pyrolysis structure of the biomass fuel pyrolysis reactor needs to be further improved. At the same time, when the biomass material is pyrolyzed, not only liquid fuel will be generated, but also organic gas will be generated. The biomass fuel pyrolysis reactor is also unable to recycle the generated organic gas. Therefore, the recovery rate of the pyrolysis products needs to be further improved. Therefore, a pyrolysis reactor for biomass liquid fuel is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a pyrolysis reactor for biomass liquid fuel, which has the advantage of convenient recycling of the pyrolysis gas products, and solves the problem that the biomass fuel pyrolysis reactor in the above-mentioned background technology has a relatively simple structure, cannot recycle the gas products during pyrolysis, and the product resource recovery rate needs to be improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a pyrolysis reactor for biomass liquid fuel, comprising a reaction box, a gas recovery and utilization structure is arranged on the right side of the reaction box;

[0006] The gas recovery and utilization structure includes a combustion kettle fixed to the right side of a reaction box, a blower is fixedly installed on the top of the combustion kettle, a combustion-supporting box is fixedly connected to the right side of the combustion kettle, a filter box is fixedly connected to the back of the combustion kettle, a dust filter screen is fixedly connected to the inside of the filter box, a heat storage cylinder is fixedly connected to the back of the reaction box, a heat storage ceramic component is fixedly connected to the inside of the heat storage ceramic component, a heat conduction component is fixedly connected to the inside of the heat storage ceramic component, and a condensation box is fixedly connected to the back of the reaction box.

[0007] Furthermore, a pyrolysis kettle body is fixedly connected to the inner top wall of the reaction box, a feeding pipe is fixedly connected to the top left side of the pyrolysis kettle body, and a stirring motor is fixedly installed on the top of the pyrolysis kettle body, a stirring rod is fixedly connected to the output end of the stirring motor, and the stirring rod is rotatably connected to the inside of the pyrolysis kettle body.

[0008] Furthermore, an exhaust pipe is fixedly connected to the top right side of the pyrolysis kettle body, and the bottom of the exhaust pipe is fixedly connected to the inner rear wall of the combustion kettle. The interior of the combustion kettle is paved with a refractory clay layer, and the inner left wall and the inner right wall of the combustion kettle are fixedly connected with fire baffles of a fireproof gypsum structure, and flamethrowers are fixedly installed on the inner sides of the two fire baffles, and electronic pulse igniters are fixedly installed inside the two flamethrowers.

[0009] Furthermore, the front of the blower is fixedly connected to an air inlet pipe No. 1, and the left side of the blower is connected to the top of the combustion kettle via an air inlet pipe No. 2. The interior of the combustion-supporting box is filled with natural gas, and a gas metering valve is fixedly installed on the top of the combustion-supporting box. The front of the gas metering valve is connected to two flame heads through a gas pipeline. The top of the combustion kettle is fixedly connected to a smoke exhaust pipe, and the bottom of the smoke exhaust pipe is connected to the right side of the filter box.

[0010] Furthermore, a dust collecting drawer plate is slidably connected to the interior of the filter box, the dust collecting drawer plate is located on the right side of the dust filter screen plate, the left side of the filter box is fixedly connected to a No. 1 delivery pipe, the interior of the heat storage cylinder is paved with a heat insulation layer, the heat storage ceramic assembly is fixed to the inner side of the heat insulation layer, the heat conduction assembly includes a first heat exchange tube and a second heat exchange tube both fixed inside the heat storage ceramic assembly, and the right end of the first heat exchange tube is fixedly connected to the left end of the No. 1 delivery pipe.

[0011] Furthermore, a condenser is fixedly connected to the left end of the first heat exchange tube, a one-way valve is fixedly installed at the end of the condenser tube connected to the first heat exchange tube, and the condenser tube is fixedly connected to the right side of the condensation tank at the end away from the first heat exchange tube, and water pipes are externally connected to the left and right ends of the second heat exchange tube.

[0012] Furthermore, a heating component is provided inside the reaction box, and the heating component includes a heat-conducting net fixed to the outside of the pyrolysis kettle and having a thin iron wire structure, and a resistance heating wire is coiled and fixed on the outside of the heat-conducting net. A temperature control platform is fixedly installed on the left side of the reaction box, and a temperature control panel is electrically controlled on the left side of the temperature control platform, and the resistance heating wire is electrically connected to the temperature control panel.

[0013] Furthermore, an infrared temperature detector is fixedly installed on the top left side of the reaction box, an infrared temperature sensing probe is fixedly connected to the right side of the infrared temperature detector, and the internal electrical control of the infrared temperature detector is equipped with a signal processor, and the infrared temperature sensing probe is connected to the temperature control panel data through the signal processor. Beneficial Effects

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The pyrolysis reactor of biomass liquid fuel puts biomass materials to be pyrolyzed into a pyrolysis kettle body, uniformly heats the outer side of the pyrolysis kettle body through a resistance heating wire and a heat conducting net, passes organic gas generated by pyrolysis into a combustion kettle for full combustion to obtain high-temperature mixed water vapor and part of smoke dust, firstly filters and collects smoke dust particles through a dust filter screen, then passes the remaining high-temperature water vapor into a heat storage cylinder, utilizes a heat storage ceramic component and a heat conducting component to absorb and store the heat of the water vapor, and then utilizes heat exchange, and at the same time passes the water vapor after heat exchange into a condensation box for condensation collection and treatment, thereby improving the recovery rate of biomass pyrolysis reaction products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the reaction box structure of the utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view of perspective;

[0018] Figure 3 for Figure 2 Partial cutaway view from perspective;

[0019] Figure 4 for Figure 2 rear view of perspective;

[0020] Figure 5 for Figure 4 Side view of the heat storage cylinder structure from perspective.

[0021] In the figure: 1. reaction box; 2. gas recovery and utilization structure; 201. combustion kettle; 202. blower; 203. combustion-supporting box; 204. filter box; 205. dust filter screen; 206. heat storage cylinder; 207. heat storage ceramic component; 208. heat conduction component; 2081. first heat exchange tube; 2082. second heat exchange tube; 209. condensation box; 3. pyrolysis kettle body; 4. stirring motor; 5. heating component; 501. heat conduction network; 502. resistance heating wire; 6. temperature control table; 7. infrared temperature detector. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The pyrolysis reactor of biomass liquid fuel comprises a reaction box 1, a gas recovery and utilization structure 2 is arranged on the right side of the reaction box 1, a pyrolysis kettle body 3 is fixedly connected to the inner top wall of the reaction box 1, a stirring motor 4 is fixedly installed on the top of the pyrolysis kettle body 3, the stirring motor 4 drives the stirring rod to stir the biomass material so that it is fully heated, a heating component 5 is arranged inside the reaction box 1, a temperature control platform 6 is fixedly installed on the left side of the reaction box 1, and the temperature control panel of the temperature control platform 6 is operated to heat, an infrared temperature detector 7 is fixedly installed on the top left side of the reaction box 1, and the infrared temperature sensing probe of the infrared temperature detector 7 monitors the temperature of the pyrolysis kettle body 3 and transmits the temperature data to the temperature control panel of the temperature control platform 6 for display.

[0024] The gas recovery and utilization structure 2 includes a combustion kettle 201 fixed to the right side of the reaction box 1, a blower 202 is fixedly installed on the top of the combustion kettle 201, and the blower 202 introduces oxygen required for combustion into the combustion kettle 201, and a combustion-supporting box 203 is fixedly connected to the right side of the combustion kettle 201, and the combustion-supporting box 203 introduces natural gas to the flame head to assist the combustion of organic gas, and a filter box 204 is fixedly connected to the back of the combustion kettle 201, and a dust filter screen 205 is fixedly connected to the inside of the filter box 204, and the dust filter screen 205 is used to filter smoke particles. The smoke particles are discharged into the dust collecting drawer for collection. A heat storage cylinder 206 is fixedly connected to the back of the reaction box 1. A heat storage ceramic component 207 is fixedly connected to the interior of the heat storage cylinder 206. The heat storage ceramic component 207 can absorb and store the high temperature generated by combustion. A heat conduction component 208 is fixedly connected to the interior of the heat storage ceramic component 207. A condensation box 209 is fixedly connected to the back of the reaction box 1. Liquefied water from the water vapor after heat exchange is collected. At the same time, a ventilation pipe is fixedly connected to the top of the condensation box 209 to facilitate the discharge of carbon dioxide generated by the remaining combustion.

[0025] The heating assembly 5 includes a heat-conducting mesh 501 fixed to the outside of the pyrolysis kettle body 3 and having a thin iron wire structure. A resistance heating wire 502 is coiled and fixed to the outside of the heat-conducting mesh 501. The resistance heating wire 502 is used to uniformly heat the heat-conducting mesh 501, and then the heat-conducting mesh 501 uniformly conducts heat to the outside of the pyrolysis kettle body 3.

[0026] according to Figure 2 and Figure 3As shown, the biomass material to be pyrolyzed is added through the feeding pipe on the left side of the top of the pyrolysis kettle body 3, and the stirring motor 4 is controlled to drive the stirring rod to evenly stir the internal material to improve the heating efficiency. A drain pipe is fixedly connected to the left side of the bottom of the pyrolysis kettle body 3, and a filter screen is fixedly connected to the right end of the drain pipe to intercept the pyrolysis residue, and the left end of the drain pipe is connected to the external fuel delivery pipeline through the inner rear wall of the reaction box 1, which is convenient for further purification and processing of the liquid fuel. A slag discharge pipe is fixedly connected to the bottom of the pyrolysis kettle body 3, and the slag discharge pipe is connected to the inner bottom wall of the reaction box 1 to facilitate the removal of pyrolysis residue.

[0027] according to Figure 2 and Figure 3 As shown, the pyrolysis gas is introduced into the combustion kettle 201 through the exhaust pipe on the top right side of the pyrolysis kettle body 3, and the combustible gas is introduced to the flame head through the combustion-supporting box 203 and the gas metering valve. The pyrolysis gas is ignited by the electronic pulse igniter of the flame head for combustion treatment. A refractory clay layer of aluminum silicate material is laid inside the combustion kettle 201, which has good heat insulation and high temperature resistance. At the same time, a fire baffle with a fireproof gypsum structure is used to protect the flame head structure from being baked by the fire source, affecting its structural stability.

[0028] according to Figure 2 and Figure 4 as well as Figure 5 As shown, the smoke exhaust pipe on the top of the combustion kettle 201 is used to pass the high-temperature water vapor and smoke generated by the combustion into the filter box 204, and the dust filter screen 205 isolates the smoke on one side of the dust collecting drawer plate, which is collected by the removable dust collecting drawer plate for easy cleaning. The filtered water vapor is then discharged into the heat storage cylinder 206, and the interior of the heat storage cylinder 206 is paved with an insulating layer of a rock wool board structure. The water vapor temperature is conducted and stored in the heat storage ceramic assembly 207 through the first heat exchange tube 2081, and then the second heat exchange tube 2082 is connected to the water supply pipe at both ends to transfer the stored heat to the circulating water in the water supply pipe. After heating the water, it can be used in the hot water supply system.

[0029] according to Figure 4 and Figure 5 As shown, the left end of the first heat exchange tube 2081 is connected to a condenser, and the water vapor after heat exchange is passed into the condenser. Since a one-way valve is fixedly installed at one end of the condenser connected to the first heat exchange tube 2081, condensed water can be prevented from entering the first heat exchange tube 2081. The condensed water is collected by the condensation box 209, and the carbon dioxide generated by combustion is discharged through the ventilation pipe on the top of the condensation box 209.

[0030] according to Figure 2 As shown, the infrared temperature detector 7 monitors the temperature of the pyrolysis kettle 3 through an infrared temperature sensing probe, and transmits the detected and received infrared signal data to the internal signal processor. After being processed by the signal processor, the converted temperature data is transmitted to the temperature control panel of the temperature control station 6 for display, which is convenient for temperature control operation.

[0031] In summary, the pyrolysis reactor of biomass liquid fuel puts the biomass material to be pyrolyzed into the pyrolysis kettle body 3, and maintains a low oxygen environment in the kettle. The temperature control platform 6 is operated to use the resistance heating wire 502 and the heat conductive net 501 to uniformly heat the outer side of the pyrolysis kettle body 3 to the pyrolysis reaction temperature. At this time, the biomass material is pyrolyzed and a certain amount of organic gas is generated. The organic gas is introduced into the combustion kettle 201 for full combustion to obtain high-temperature mixed water vapor and part of the smoke dust. The dust particles are first filtered and collected by the dust filter screen plate 205 of the filter box 204, and then the remaining high-temperature water vapor is introduced into the heat storage cylinder 206. The first heat exchange tube 2081 is used to transfer the high-temperature water vapor to the internal storage of the heat storage ceramic component 207, and then the second heat exchange tube 2082 transfers the stored heat to the circulating water in the external water pipeline. The water is heated and used in the external hot water supply system. At the same time, the water vapor after heat exchange is passed into the condensation box 209 for condensation collection and treatment, thereby improving the recovery rate of the biomass pyrolysis reaction products, solving the problem that the biomass fuel pyrolysis reactor in the above-mentioned background technology has a relatively simple structure and cannot recycle the gas products during pyrolysis, and the problem that the product resource recovery rate needs to be improved.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biomass liquid fuel pyrolysis reactor, comprising a reaction box (1), characterized in that: A gas recovery structure (2) is provided on the right side of the reaction box (1); The gas recovery and utilization structure (2) comprises a combustion kettle (201) fixed to the right side of a reaction box (1); a blower (202) is fixedly installed on the top of the combustion kettle (201); a combustion-supporting box (203) is fixedly connected to the right side of the combustion kettle (201); a filter box (204) is fixedly connected to the back of the combustion kettle (201); a dust filter screen (205) is fixedly connected to the inside of the filter box (204); a heat storage cylinder (206) is fixedly connected to the back of the reaction box (1); a heat storage ceramic component (207) is fixedly connected to the inside of the heat storage ceramic component (207); a heat conduction component (208) is fixedly connected to the inside of the heat storage ceramic component (207); and a condensation box (209) is fixedly connected to the back of the reaction box (1).

2. The pyrolysis reactor for biomass liquid fuel according to claim 1, characterized in that: The inner top wall of the reaction box (1) is fixedly connected to a pyrolysis kettle body (3), the top left side of the pyrolysis kettle body (3) is fixedly connected to a feeding pipe, and the top of the pyrolysis kettle body (3) is fixedly installed with a stirring motor (4), the output end of the stirring motor (4) is fixedly connected to a stirring rod, and the stirring rod is rotatably connected to the inside of the pyrolysis kettle body (3).

3. The pyrolysis reactor for biomass liquid fuel according to claim 2, characterized in that: An exhaust pipe is fixedly connected to the right side of the top of the pyrolysis kettle body (3), and the bottom of the exhaust pipe is fixedly connected to the inner rear wall of the combustion kettle (201). A refractory soil layer is laid inside the combustion kettle (201), and the inner left wall and the inner right wall of the combustion kettle (201) are both fixedly connected to fire baffles with a fireproof gypsum structure, and flame heads are fixedly installed on the inner sides of the two fire baffles, and electronic pulse igniters are fixedly installed inside the two flame heads.

4. The pyrolysis reactor for biomass liquid fuel according to claim 3, characterized in that: The front of the blower (202) is fixedly connected to an air inlet pipe No. 1, and the left side of the blower (202) is connected to the top of the combustion kettle (201) via the air inlet pipe No.

2. The combustion-supporting box (203) is filled with natural gas, and a gas metering valve is fixedly installed on the top of the combustion-supporting box (203). The front of the gas metering valve is connected to two flame heads via a gas pipeline. The top of the combustion kettle (201) is fixedly connected to a smoke exhaust pipe, and the bottom of the smoke exhaust pipe is connected to the right side of the filter box (204).

5. The pyrolysis reactor for biomass liquid fuel according to claim 1, characterized in that: The filter box (204) is slidably connected to a dust collecting drawer plate, the dust collecting drawer plate is located on the right side of the dust filter screen plate (205), the filter box (204) is fixedly connected to a No. 1 delivery pipe on the left side, a heat insulation layer is laid inside the heat storage cylinder (206), the heat storage ceramic component (207) is fixed to the inner side of the heat insulation layer, the heat conduction component (208) comprises a first heat exchange tube (2081) and a second heat exchange tube (2082) both fixed inside the heat storage ceramic component (207), and the right end of the first heat exchange tube (2081) is fixedly connected to the left end of the No. 1 delivery pipe.

6. The pyrolysis reactor for biomass liquid fuel according to claim 5, characterized in that: The left end of the first heat exchange tube (2081) is fixedly connected to a condenser tube, the end of the condenser tube connected to the first heat exchange tube (2081) is fixedly installed with a one-way valve, and the condenser tube is fixedly connected to the right side of the condensation tank (209) at the end away from the first heat exchange tube (2081), and the left and right ends of the second heat exchange tube (2082) are both externally connected to water supply pipelines.

7. The pyrolysis reactor for biomass liquid fuel according to claim 2, characterized in that: A heating component (5) is arranged inside the reaction box (1), and the heating component (5) comprises a heat-conducting net (501) fixed to the outside of the pyrolysis kettle (3) and having a thin iron wire structure, and a resistance heating wire (502) is coiled and fixed on the outside of the heat-conducting net (501), and a temperature control platform (6) is fixedly installed on the left side of the reaction box (1), and a temperature control panel is electrically controlled on the left side of the temperature control platform (6), and the resistance heating wire (502) is electrically connected to the temperature control panel.

8. The pyrolysis reactor for biomass liquid fuel according to claim 7, characterized in that: An infrared temperature detector (7) is fixedly installed on the top of the left side of the reaction box (1), an infrared temperature sensing probe is fixedly connected to the right side of the infrared temperature detector (7), and the internal electrical control of the infrared temperature detector (7) is provided with a signal processor, and the infrared temperature sensing probe is connected to the temperature control panel data via the signal processor.

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