CN109161404B - Cogeneration device for downdraft straw carbonized carbon gas and production method thereof - Google Patents
Cogeneration device for downdraft straw carbonized carbon gas and production method thereof Download PDFInfo
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- CN109161404B CN109161404B CN201811203217.7A CN201811203217A CN109161404B CN 109161404 B CN109161404 B CN 109161404B CN 201811203217 A CN201811203217 A CN 201811203217A CN 109161404 B CN109161404 B CN 109161404B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 95
- 239000010902 straw Substances 0.000 title claims abstract description 95
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 72
- 239000002028 Biomass Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 65
- 239000002994 raw material Substances 0.000 claims description 51
- 238000006243 chemical reaction Methods 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 39
- 238000002309 gasification Methods 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002737 fuel gas Substances 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 239000004744 fabric Substances 0.000 abstract 2
- 239000003610 charcoal Substances 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0906—Physical processes, e.g. shredding, comminuting, chopping, sorting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
- C10J2300/092—Wood, cellulose
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention provides a device and a method for co-production of downdraft straw carbonized carbon gas, wherein the device comprises the following components: the tower body, the tower body upper end is equipped with the feed inlet, the middle part is equipped with the core tube in the tower body, the core tube outside is equipped with the gear shaft, be equipped with the driving lever on the core tube of gear shaft upper end, the gear shaft middle part outside is equipped with cloth wind speed regulating lever, be equipped with steam temperature regulating lever on the core tube of gear shaft lower extreme, be equipped with air speed regulating spout and steam temperature regulating spout respectively on cloth wind speed regulating lever and the steam temperature regulating lever, core tube upper portion is equipped with core tube steam inlet and core tube air inlet; the biomass straw biomass furnace comprises a steam temperature adjusting rod, and is characterized in that a rotary grate is arranged on a core pipe at the lower end of the steam temperature adjusting rod, a gas outlet is formed in a tower body at the lower side of the rotary grate, a support frame is arranged at the lower end of the tower body, a rotary carbon scraper is arranged at the lower side of the support frame, and a carbon outlet is formed in the bottom of the tower body.
Description
Technical Field
The invention relates to the technical field of biomass utilization, in particular to a device and a method for co-producing downdraft straw carbonized carbon gas.
Background
The straw resources produced in China every year have 9 hundred million tons, the processing byproducts have 5.8 hundred million tons, the comprehensive utilization rate of the processing byproducts is less than 40 percent on average, and more than 60 percent of byproducts are randomly piled up, discarded or used as fertilizer for returning to fields and living fuels, so that not only is excessive waste of resources caused, but also unavoidable pollution is caused to the environment.
In recent years, a plurality of straw direct-fired power plants are newly built in China, straw is directly converted into electric energy for use, but the efficiency of the straw power plants is low due to low heat value of straw raw materials, high moisture content and low biomass ash melting point, and the straw power plants are difficult to survive under a market economy system. The straw is directly returned to the field to cause other problems such as plant diseases and insect pests, soil hardening and the like. Under the high-voltage line of the national straw burning forbidden line, how to treat the straw problem, which is beneficial to farmers and enterprises, and how to maximize the benefit of straw resource utilization are the problems which are needed to be solved at present.
Disclosure of Invention
The invention aims to provide a device for co-production of downdraft straw carbonized carbon gas and a production method thereof, which are used for solving the problems in the background art.
The technical problems solved by the invention are realized by adopting the following technical scheme: a device for co-producing downdraft straw carbonized carbon gas, comprising: the tower body is provided with a feeding hole at the upper end, a core tube is arranged in the middle of the tower body, a gear shaft is arranged outside the core tube, a plurality of arch breaking cutters are arranged outside the gear shaft, a stirring rod is arranged on the core tube at the upper end of the gear shaft, a wind distribution speed regulating rod is arranged outside the middle of the gear shaft, a steam temperature regulating rod is arranged on the core tube at the lower end of the gear shaft, an air speed regulating spout and a steam temperature regulating spout are respectively arranged on the wind distribution speed regulating rod and the steam temperature regulating rod, and a core tube steam inlet and a core tube air inlet are arranged at the upper part of the core tube; the steam temperature adjusting device is characterized in that a rotary fire grate is arranged on a core tube at the lower end of the steam temperature adjusting rod, a gas outlet is formed in a tower body at the lower side of the rotary fire grate, a support frame is arranged at the lower end of the tower body, the core tube is arranged on the support frame through a bearing, a fire grate moving track support is arranged on the support frame, a rotary furnace grate is arranged on the fire grate moving track support, a rotary carbon scraping device is arranged at the lower side of the support frame, a carbon outlet is formed in the bottom of the tower body, a carbon collecting box is arranged on the carbon outlet, a steam cooling nozzle is arranged on the rotary carbon scraping device, and a carbon cooling screw conveyor is arranged at the bottom of the carbon collecting box.
The tower body middle part one side is equipped with water-cooling coil, the support frame is inside hollow structure, and the support frame intussuseption is filled with water, and support frame one side is equipped with the support frame water inlet, and water-cooling coil one end is connected in support frame, the other end vapor by steam temperature adjustment pipeline and steam temperature reduction pipeline enter into the core pipe and rotatory carbon scraper inside through core pipe steam inlet, steam temperature reduction spout respectively.
The outer end of the rotary grate is provided with a rotary grate port, the outer side of the rotary grate port is connected with a grate power device, and the rotary grate is arranged on a grate movement track bracket; the fire grate power device drives the rotary fire grate to rotate; the core tube is driven to rotate by the rotary fire grate, so that the core tube respectively drives the stirring rod, the air distribution speed regulating rod, the steam temperature regulating rod and the rotary carbon scraping device to rotate simultaneously.
Two gear shafts are respectively arranged on two sides of the surface of the core tube, a plurality of gears are arranged on the gear shafts, one side of each gear is connected with the corresponding gear shaft, and the other side of each gear is fixedly provided with a broken cutter; the included angle between the arch breaking cutter and the gear shaft is alpha, and the arch breaking angle alpha is 30-90 degrees.
Two pairs of freely-changeable material stirring devices I and II are arranged on the material stirring rod, the material stirring devices I and II form an angle-changeable material stirring angle beta with the material stirring rod, the material stirring devices II and the material stirring rod form an angle-changeable material stirring angle gamma, and the material stirring angle beta ranges from: 15-60 degrees; the stirring angle gamma is in the range of: 30-120 deg.
The stirring rod and the air distribution speed regulating rod are arranged on the core tube in an up-down adjustable mode, the distance between the air distribution speed regulating rod and the gasification reaction layer is 5-10 cm, and the distance between the stirring rod and the gasification reaction layer is 20-30 cm.
The air distribution speed regulating rod is in a rice-shaped structure, and the interval between air speed regulating nozzles arranged on the air distribution speed regulating rod is 1:1.42:1.77:2.27:2.89:3.68: the 4.68 ratio increases sequentially from the outside to the inside.
The rotary grate is of a double-layer structure, the upper layer of the rotary grate 8 is connected with a gear shaft, the gear shaft drives the upper layer of the grate to rotate when moving, the two layers of rotary grates relatively rotate to adjust the area of the grate holes, and the change range of the area of the grate holes is 50% -100%.
A production method for co-production of downdraft straw carbonized carbon gas comprises the following steps:
step 1: the straw biomass raw material enters a downdraft straw furnace from a feed inlet, and the raw material is uniformly distributed in the furnace by a stirring rod;
step 2: arch breaking cutters arranged on the gear shafts break arches of straw biomass raw materials which are not easy to move on the side walls of the core tubes to prevent bridging;
step 3: the crushed straw biomass raw materials enter a gasification reaction layer to carry out gasification reaction, and air and steam are respectively introduced into the gasification reaction layer through an air distribution speed regulating rod and a steam temperature regulating rod;
step 4: the straw carbon generated by gasification reaction rotates through a rotary grate and falls into the bottom of the device;
step 5: straw carbon falling into the bottom of the device is scraped into a carbon collection box by a rotary carbon scraper, is discharged and collected by a carbon cooling screw conveyor, and fuel gas is discharged from a fuel gas outlet.
Compared with the prior art, the invention has the following advantages:
1) The stirring rod arranged at the upper part of the device can adjust stirring angles according to straw raw materials with different shapes, so that the straw biomass raw materials can be uniformly distributed in the furnace, and the normal operation of gasification reaction is facilitated.
2) Air is introduced into an air distribution speed regulating rod arranged in the middle of the device, forced air distribution is carried out, and the uniformity of a reaction field is improved; and the steam temperature regulating rod arranged in the middle of the device is introduced with steam to control the internal operation temperature of the reaction layer and control the yield of the straw carbon.
3) The stirring rod and the air distribution speed regulating rod which are arranged in the device can move up and down while rotating, so that uneven distribution of a temperature field caused by the fact that straw biomass raw materials with different characteristics enter the furnace can be avoided, and the progress of gasification reaction is hindered.
4) Through the rotary fire grate arranged in the middle of the device, holes are drilled on the fire grate, and carbonization of different straw raw materials is realized by changing the holes.
5) Arch breaking cutters are arranged on two sides of the core tube, the arch breaking cutters are driven to rotate through rotation of the core tube, so that arch breaking and bridging prevention of straw biomass raw materials which are not easy to move on the side wall of the core tube are realized, the uniformity of the raw materials in the gasification reaction layer is enhanced, and the gasification reaction process is accelerated.
6) The self-sufficiency of the system steam is realized through the water-cooling coil pipes arranged in the middle of the device, and the self-waste heat is optimally utilized.
7) The support frame arranged at the bottom of the device is used for controlling the water flowing in the device so as to realize the preliminary cooling of the generated straw carbon; the final cooling of the straw carbon generated by gasification reaction is realized through the steam cooling nozzle arranged on the rotary carbon scraping device at the bottom of the device, and the quality of the straw carbon is improved through the contact reaction of steam and carbon.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of a material pulling rod according to the present invention.
Fig. 3 is a schematic view of the installation of the arch breaking cutter of the present invention.
Detailed Description
In order to make the technical means, creation features, workflow, and usage method of the present invention achieve the objects and effects of the present invention easy to understand, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, a device for co-producing carbon gas from downdraft straw carbonization comprises: the tower body is provided with a feed inlet 2 at the upper end, a core tube 17 is arranged in the middle of the tower body, a gear shaft 16 is arranged outside the core tube 17, a plurality of arch breaking cutters 18 are arranged outside the gear shaft 16, a stirring rod 3 is arranged on the core tube 17 at the upper end of the gear shaft 16, an air distribution speed regulating rod 5 is arranged outside the middle of the gear shaft 16, a steam temperature regulating rod 6 is arranged on the core tube 17 at the lower end of the gear shaft 16, an air speed regulating nozzle 19 and a steam temperature regulating nozzle 20 are respectively arranged on the air distribution speed regulating rod 5 and the steam temperature regulating rod 6, and a core tube steam inlet 1 and a core tube air inlet 15 are arranged at the upper part of the core tube 17; the steam temperature adjusting device is characterized in that a rotary grate 8 is arranged on a core pipe 17 at the lower end of the steam temperature adjusting rod 6, a gas outlet 23 is formed in a tower body at the lower side of the rotary grate 8, a support frame 11 is arranged at the lower end of the tower body, the core pipe 17 is arranged on the support frame 11 through a bearing 13, a grate movement track support 9 is arranged on the support frame 11, the rotary grate 8 is arranged on the grate movement track support 9, a rotary carbon scraper 12 is arranged at the lower side of the support frame 11, a carbon outlet 14 is formed in the bottom of the tower body, a carbon collecting box 26 is arranged on the carbon outlet 14, a steam cooling spout 21 is arranged on the rotary carbon scraper 12, and a carbon cooling screw conveyor 27 is arranged at the bottom of the carbon collecting box 26.
The water cooling tower is characterized in that a water cooling coil pipe 7 is arranged on one side of the middle part of the tower body, the support frame 11 is of an internal hollow structure, water is filled in the support frame 11, a support frame water inlet 25 is formed in one side of the support frame 11, one end of the water cooling coil pipe 7 is connected with the support frame 11, and water vapor at the other end enters the core pipe 17 and the rotary carbon scraper 12 through the steam inlet 1 and the steam cooling nozzle 21 of the core pipe through the steam temperature adjusting pipeline 4 and the steam cooling pipeline 10 respectively; after entering from the water inlet 25 of the support frame, water flows through the support frame 11 and finally enters the water cooling coil 7, and the water entering the water cooling coil 7 is heated and evaporated to become water vapor due to the higher running temperature inside the device.
The outer end of the rotary fire grate 8 is provided with a rotary fire grate port 22, the outer side of the rotary fire grate port 22 is connected with a fire grate power device 24, and the rotary fire grate 8 is arranged on a fire grate movement track bracket 9; the fire grate power device 24 drives the rotary fire grate 8 to rotate; the core tube 17 is driven to rotate by the rotary grate 8, so that the core tube 17 drives the stirring rod 3, the air distribution speed regulating rod 5, the steam temperature regulating rod 6 and the rotary carbon scraper 12 to rotate simultaneously; the supporting frame 11 is connected with the core tube 17 through the bearing 13, and the supporting frame 11 is fixed at the bottom of the device and does not influence the transmission of the core tube 17.
Two gear shafts 16 are respectively arranged on two sides of the surface of the core tube 17, a plurality of gears are arranged on the gear shafts 16, one side of each gear is connected with the gear shaft 16, and the other side of each gear is fixedly provided with a breaking cutter 18; the arch breaking cutter 18 can break arches at different angles according to straw raw materials with different shapes; the arch breaking angle alpha is mainly realized by adjusting the gear shaft 16 to move up and down so as to change the angle between the arch breaking cutter 18 and the gear shaft 16; the arch breaking angle alpha is within 30-90 degrees during normal operation. The purpose is that: by adjusting different arch breaking angles alpha, the raw materials on the side wall of the core tube 17 uniformly move downwards, the moving speed of the raw materials in the furnace is guaranteed to be consistent with that of the raw materials in the furnace, and the phenomenon that the gasification agent is short-circuited due to the fact that an oxide layer moves upwards to burn through a raw material layer is avoided.
The straw biomass raw material enters the downdraft straw furnace from the feed inlet 2, and is stirred by the stirring rod 3, so that the raw material is prevented from being blocked at the feed inlet 2; simultaneously, two pairs of freely-changeable-angle stirring devices I28 and stirring devices II 29 are arranged on the stirring rod 3, the stirring devices I28 and the stirring rod form a variable-angle stirring angle beta, the stirring devices II 29 and the stirring rod form a variable-angle stirring angle gamma, stirring of different angles is carried out on straw raw materials in different shapes, and the stirring angle beta ranges: 15-60 degrees; the stirring angle gamma is in the range of: 30-120 deg. The purpose is that: the straw biomass raw materials can be uniformly distributed in the furnace, so that insufficient gasification reaction and uneven temperature distribution caused by too high local accumulation of the straw biomass raw materials are avoided; this measure can increase the efficiency of the gasification reaction.
The stirring rod 3 and the air distribution speed regulating rod 5 are vertically and adjustably arranged on the core tube 17, the air distribution speed regulating rod 5 moves within a range of about 5-10 cm away from the gasification reaction layer, and the stirring rod 3 moves within a range of about 20-30 cm away from the gasification reaction layer. The purpose is that: aiming at straw biomass raw materials with different characteristics, the temperature field in the furnace is regulated to be uniformly distributed, so that the adaptability of the raw materials is improved.
The air distribution speed regulating rod 5 is in a meter-shaped structure, and the air speed regulating nozzles 19 arranged on the air distribution speed regulating rod 5 are spaced according to 1:1.42:1.77:2.27:2.89:3.68: the ratio of 4.68 is increased from outside to inside, and the air introduced by the air speed regulating nozzle 19 can be regulated according to the state of the raw materials. The purpose is that: the air supply proportion outside the raw materials is increased, the uniformity of air supply is enhanced, and the uniformity of the temperature of the gasification reaction layer is improved.
The rotary grate 8 is of a double-layer structure, the upper layer of the rotary grate 8 is connected with the gear shaft 16, the gear shaft 16 can drive the upper layer of the grate to rotate when moving, and the grate holes are gradually shielded along with the rotation of the upper layer of the grate, so that the grate holes are gradually reduced; the straw charcoal generated from the rotary grate 8 falls to the bottom of the device; the area of the fire grate holes can be properly adjusted according to biomass straw raw materials with different shapes, and the change range of the fire grate holes is 50% -100%. The purpose is that: the size of the fire grate holes is adjusted, so that the fire grate holes can be suitable for carbonization of different raw materials, and the generation of straw carbon is facilitated.
The steam and air entering the core tube 17 from the core tube steam inlet 1 and the core tube air inlet 15 enter the steam temperature regulating rod 6 and the air distribution speed regulating rod 5 respectively, and the air distribution speed regulating rod 5 and the steam temperature regulating rod 6 are respectively provided with an air speed regulating spout 19 and a steam temperature regulating spout 20. By controlling the air speed regulating nozzle 19, the uniform air distribution in the gasification reaction layer is realized, and the gasification reaction process is controlled; the steam temperature adjusting nozzle 20 is controlled to control the internal operation temperature of the gasification reaction layer and the yield of the straw carbon.
The support frame 11 one end is provided with support frame water inlet 25, through the inside water-passing of control support frame 11, realizes carrying out preliminary cooling to the straw charcoal that falls. The water vapor from the vapor cooling pipeline 10 enters the rotary carbon scraper 12, a vapor cooling nozzle 20 is arranged at the upper part of the rotary carbon scraper 12, and the secondary cooling of the straw carbon falling to the bottom of the device is realized by controlling the vapor cooling nozzle 20, so that the quality of the straw carbon is improved; the cooled straw charcoal is scraped into a charcoal collection box 26 by a rotary charcoal scraper 12 from a charcoal outlet 14, and finally discharged and collected by a charcoal cooling screw conveyor 27. The generated fuel gas is discharged from a fuel gas outlet 23 arranged at the bottom of the device, so that the co-production of high-quality straw charcoal and biomass fuel gas is realized.
A production method for co-production of downdraft straw carbonized carbon gas comprises the following steps:
step 1: the straw biomass raw material enters a downdraft straw furnace from a feed inlet, and the raw material is uniformly distributed in the furnace by a stirring rod;
step 2: arch breaking cutters arranged on the gear shafts break arches of straw biomass raw materials which are not easy to move on the side walls of the core tubes to prevent bridging;
step 3: the crushed straw biomass raw materials enter a gasification reaction layer to carry out gasification reaction, and air and steam are respectively introduced into the gasification reaction layer through an air distribution speed regulating rod and a steam temperature regulating rod;
step 4: the straw carbon generated by gasification reaction rotates through a rotary grate and falls into the bottom of the device;
step 5: straw carbon falling into the bottom of the device is scraped into a carbon collection box by a rotary carbon scraper, is discharged and collected by a carbon cooling screw conveyor, and fuel gas is discharged from a fuel gas outlet.
Example 1
Feeding the chip-shaped straw biomass raw materials into a downdraft straw furnace for gasification pyrolysis reaction, wherein the raw material consumption is 1.1t/h, the raw material granularity is less than 1cm, the raw material moisture is 13%, the chip-shaped straw biomass raw materials enter from a feed inlet, stirring is carried out through a stirring rod, the stirring angle beta is adjusted to 15 degrees, the stirring angle gamma is adjusted to 30 degrees, a wind distribution speed regulating rod moves up and down within a range of 5cm from a gasification reaction layer, the stirring rod moves up and down within a range of 20cm from the gasification reaction layer, forced wind distribution is carried out into the device through the wind distribution speed regulating rod, and the wind distribution amount is 655Nm 3 /h to increase internal flowability; steam is introduced into the device through a steam temperature adjusting rod to adjust the temperature, and the internal temperature is controlled to improve the yield of straw carbon and the introduced straw carbonThe steam amount is 66kg/h; adjusting the gear shaft to enable the material breaking angle alpha of the arch breaking cutter to be 30 degrees, and adjusting the area of the fire grate hole to be 50 percent; the straw carbon uniformly falls down by the rotary grate, the steam sprayed out of the steam cooling nozzle and the support frame at the bottom are further cooled, and the steam sprayed out of the steam cooling nozzle is 169.4kg/h; finally, the gas generated by the system is discharged from a gas outlet, and the gas quantity is 1764Nm 3 /h; and the straw carbon generated by the system is collected by a carbon collecting box and finally discharged by a carbon cooling screw conveyor, the yield of the straw carbon of the system is 28%, and the carbon yield is 308kg/h. Finally, the co-production of the high-quality straw charcoal and the biomass fuel gas is realized.
Example 2
Feeding the strip-shaped straw biomass raw materials into a downdraft straw furnace for gasification pyrolysis reaction, wherein the raw material consumption is 3.2t/h, the raw material granularity is less than 4cm, the raw material moisture is 18%, the strip-shaped straw biomass raw materials enter from a feed inlet, stirring is carried out through a stirring rod, the stirring angle beta is adjusted to 45 degrees, the stirring angle gamma is adjusted to 90 degrees, a wind distribution speed regulating rod moves up and down within a range of 10cm from a gasification reaction layer, the stirring rod moves up and down within a range of 28cm from the gasification reaction layer, forced wind distribution is carried out into the device through the wind distribution speed regulating rod, and the wind distribution amount is 524Nm 3 /h to increase internal flowability; introducing steam into the device through a steam temperature regulating rod to regulate the temperature, and controlling the internal temperature to improve the yield of the straw carbon, wherein the amount of the introduced steam is 91.52kg/h; adjusting the gear shaft to enable the arch breaking angle of the arch breaking cutter to be 75 degrees, and adjusting the area of the fire grate hole to be 70 percent; the straw carbon uniformly falls down by the rotary grate, the steam sprayed out of the steam cooling nozzle and the support frame at the bottom are further cooled, and the steam sprayed out of the steam cooling nozzle has the quantity of 457.6kg/h; finally, the gas generated by the system is discharged from a gas outlet, and the gas quantity is 5033Nm 3 /h; and the straw carbon generated by the system is collected by a carbon collecting box and finally discharged by a carbon cooling screw conveyor, the yield of the straw carbon of the system is 26%, and the carbon yield is 832kg/h. Finally, the co-production of the high-quality straw charcoal and the biomass fuel gas is realized.
Example 3
Sending the pressed straw biomass raw material into a downdraft strawThe stalk furnace carries out gasification pyrolysis reaction, the consumption of raw materials is 2.8t/h, the granularity of the raw materials is less than 3cm, the moisture of the raw materials is 15%, the pressed stalk biomass raw materials enter from a feed inlet, the raw materials are stirred through a stirring rod, the stirring angle beta is adjusted to 60 degrees, the stirring angle gamma is adjusted to 120 degrees, a wind distribution speed regulating rod moves up and down within the range of 8cm away from a gasification reaction layer, the stirring rod moves up and down within the range of 24cm away from the gasification reaction layer, forced wind distribution is carried out into the device through the wind distribution speed regulating rod, and the wind distribution quantity is 765Nm 3 /h to increase internal flowability; introducing steam into the device through a steam temperature regulating rod to regulate the temperature, and controlling the internal temperature to improve the yield of the straw carbon, wherein the amount of the introduced steam is 120.6kg/h; adjusting the gear shaft to enable the arch breaking angle alpha of the arch breaking cutter to be 60 degrees, and adjusting the area of the fire grate hole to be 100 percent; the straw carbon uniformly falls down by the rotary grate, the steam sprayed out of the steam cooling nozzle and the support frame at the bottom are further cooled, and the steam sprayed out of the steam cooling nozzle is 462kg/h; finally, the gas generated by the system is discharged from a gas outlet, and the gas quantity is 4467Nm 3 /h; and the straw carbon generated by the system is collected by a carbon collecting box and finally discharged by a carbon cooling screw conveyor, the yield of the straw carbon of the system is 30%, and the carbon yield is 840kg/h. Finally, the co-production of the high-quality straw charcoal and the biomass fuel gas is realized.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A device for co-producing downdraft straw carbonized carbon gas, comprising: the tower body, its characterized in that: the upper end of the tower body is provided with a feed inlet, the middle part in the tower body is provided with a core tube, the outer side of the core tube is provided with a gear shaft, the outer side of the gear shaft is provided with a plurality of arch breaking cutters, the core tube at the upper end of the gear shaft is provided with a stirring rod, the outer side of the middle part of the gear shaft is provided with a wind-distribution speed regulating rod, the core tube at the lower end of the gear shaft is provided with a steam temperature regulating rod, the wind-distribution speed regulating rod and the steam temperature regulating rod are respectively provided with an air speed regulating spout and a steam temperature regulating spout, and the upper part of the core tube is provided with a core tube steam inlet and a core tube air inlet; the steam temperature adjusting device is characterized in that a rotary fire grate is arranged on a core tube at the lower end of the steam temperature adjusting rod, a gas outlet is formed in a tower body at the lower side of the rotary fire grate, a support frame is arranged at the lower end of the tower body, the core tube is arranged on the support frame through a bearing, a fire grate moving track support is arranged on the support frame, a rotary furnace grate is arranged on the fire grate moving track support, a rotary carbon scraping device is arranged at the lower side of the support frame, a carbon outlet is formed in the bottom of the tower body, a carbon collecting box is arranged on the carbon outlet, a steam cooling nozzle is arranged on the rotary carbon scraping device, and a carbon cooling screw conveyor is arranged at the bottom of the carbon collecting box.
2. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: the tower body middle part one side is equipped with water-cooling coil, the support frame is inside hollow structure, and the support frame intussuseption is filled with water, and support frame one side is equipped with the support frame water inlet, and water-cooling coil one end is connected in support frame, the other end vapor by steam temperature adjustment pipeline and steam temperature reduction pipeline enter into the core pipe and rotatory carbon scraper inside through core pipe steam inlet, steam temperature reduction spout respectively.
3. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: the outer end of the rotary grate is provided with a rotary grate port, the outer side of the rotary grate port is connected with a grate power device, and the rotary grate is arranged on a grate movement track bracket; the fire grate power device drives the rotary fire grate to rotate; the core tube is driven to rotate by the rotary fire grate, so that the core tube respectively drives the stirring rod, the air distribution speed regulating rod, the steam temperature regulating rod and the rotary carbon scraping device to rotate simultaneously.
4. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: two gear shafts are respectively arranged on two sides of the surface of the core tube, a plurality of gears are arranged on the gear shafts, one side of each gear is connected with the corresponding gear shaft, and the other side of each gear is fixedly provided with a broken cutter; the included angle between the arch breaking cutter and the gear shaft is alpha, and the arch breaking angle alpha is 30-90 degrees.
5. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: two pairs of freely-changeable material stirring devices I and II are arranged on the material stirring rod, the material stirring devices I and II form an angle-changeable material stirring angle beta with the material stirring rod, the material stirring devices II and the material stirring rod form an angle-changeable material stirring angle gamma, and the material stirring angle beta ranges from: 15-60 degrees; the stirring angle gamma is in the range of: 30-120 deg.
6. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: the stirring rod and the air distribution speed regulating rod are arranged on the core tube in an up-down adjustable mode, the distance between the air distribution speed regulating rod and the gasification reaction layer is 5-10 cm, and the distance between the stirring rod and the gasification reaction layer is 20-30 cm.
7. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: the air distribution speed regulating rod is in a rice-shaped structure, and the interval between air speed regulating nozzles arranged on the air distribution speed regulating rod is 1:1.42:1.77:2.27:2.89:3.68: the 4.68 ratio increases sequentially from the outside to the inside.
8. The device for co-production of downdraft straw carbonized carbon gas according to claim 1, wherein: the rotary grate is of a double-layer structure, the upper layer of the rotary grate 8 is connected with a gear shaft, the gear shaft drives the upper layer of the grate to rotate when moving, the two layers of rotary grates relatively rotate to adjust the area of the grate holes, and the change range of the area of the grate holes is 50% -100%.
9. A production method for co-production of downdraft straw carbonized carbon gas by using the device of any one of claims 1 to 8, which is characterized in that: the method comprises the following steps:
step 1: the straw biomass raw material enters a downdraft straw furnace from a feed inlet, and the raw material is uniformly distributed in the furnace by a stirring rod;
step 2: arch breaking cutters arranged on the gear shafts break arches of straw biomass raw materials which are not easy to move on the side walls of the core tubes to prevent bridging;
step 3: the crushed straw biomass raw materials enter a gasification reaction layer to carry out gasification reaction, and air and steam are respectively introduced into the gasification reaction layer through an air distribution speed regulating rod and a steam temperature regulating rod;
step 4: the straw carbon generated by gasification reaction rotates through a rotary grate and falls into the bottom of the device;
step 5: straw carbon falling into the bottom of the device is scraped into a carbon collection box by a rotary carbon scraper, is discharged and collected by a carbon cooling screw conveyor, and fuel gas is discharged from a fuel gas outlet.
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| CN201811203217.7A CN109161404B (en) | 2018-10-16 | 2018-10-16 | Cogeneration device for downdraft straw carbonized carbon gas and production method thereof |
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| CN201811203217.7A CN109161404B (en) | 2018-10-16 | 2018-10-16 | Cogeneration device for downdraft straw carbonized carbon gas and production method thereof |
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| CN112029536A (en) * | 2020-08-03 | 2020-12-04 | 湖北和瑞能源科技股份有限公司 | Biomass pyrolysis gasification processing device |
| CN114106859A (en) * | 2021-11-26 | 2022-03-01 | 武汉光谷蓝焰新能源股份有限公司 | Biomass high-efficiency pyrolysis furnace for realizing carbon heat co-production and process thereof |
| CN114601185A (en) * | 2022-03-17 | 2022-06-10 | 哈尔滨海大饲料有限公司 | Feed processing technology for improving rumen bypass protein content |
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| CN103980942A (en) * | 2014-05-14 | 2014-08-13 | 合肥德博生物能源科技有限公司 | Device used for biomass gasification and active carbon combined production |
| CN106701120A (en) * | 2016-12-29 | 2017-05-24 | 安徽虹源生物质有限公司 | Rotary arch breaking high-material bed up-draft biomass pyrolysis gasification carbon-gas co-production device and method |
| CN208980668U (en) * | 2018-10-16 | 2019-06-14 | 合肥德博生物能源科技有限公司 | One kind being used for downdraft straw charring charcoal gas combined production device |
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| CN103980942A (en) * | 2014-05-14 | 2014-08-13 | 合肥德博生物能源科技有限公司 | Device used for biomass gasification and active carbon combined production |
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