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CN-122012128-A - Biomass carbonization equipment for soil remediation

CN122012128ACN 122012128 ACN122012128 ACN 122012128ACN-122012128-A

Abstract

The invention relates to the technical field of biomass carbonization, in particular to biomass carbonization equipment for soil remediation, which comprises a heating box, a heating unit, a carbonization furnace, a fan, an upper air pipe, a mixing pipe, a powder unit and a return pipe, wherein the carbonization furnace is vertically arranged in the heating box, the heating end of the heating unit heats the carbonization furnace, an air outlet of the fan is connected with an input end of the upper air pipe, an output end of the upper air pipe extends into the bottom of a pyrolysis chamber of the carbonization furnace, an input end of the mixing pipe extends into the top of the pyrolysis chamber of the carbonization furnace, an output end of the mixing pipe is connected with an input end of the powder unit, the powder unit is used for separating hot air from biomass carbon, an input end of the return pipe is connected with a gas outlet of the powder unit, the return pipe is positioned in the heating chamber of the heating box, and an output end of the return pipe is connected with an air inlet of the fan.

Inventors

  • YAO GUANGLONG
  • Ren Xingchun
  • XUE CHUN

Assignees

  • 西安青予环能科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260402

Claims (10)

  1. 1. A biomass carbonization device for soil remediation comprises a heating box (1) and a heating unit (2), wherein a heating chamber is arranged in the heating box (1), the heating unit (2) is arranged on the heating box (1), the heating end of the heating unit (2) stretches into the heating chamber of the heating box (1), the biomass carbonization device is characterized by further comprising a carbonization furnace (3), a fan (4), an upper air pipe (5), a mixing pipe (6), a powder unit (7) and a return pipe (8), the carbonization furnace (3) is vertically arranged in the heating chamber of the heating box (1), the heating end of the heating unit (2) heats the carbonization furnace (3), a pyrolysis chamber is arranged in the carbonization furnace (3), an air outlet of the fan (4) is connected with the input end of the upper air pipe (5), the output end of the upper air pipe (5) stretches into the bottom of the pyrolysis chamber of the carbonization furnace (3), the input end of the mixing pipe (6) stretches into the top of the chamber of the carbonization furnace (3), the output end of the mixing pipe (6) is connected with the input end of a powder unit (7), the powder unit (7) is used for separating biomass and the hot air from the return pipe (8) and is positioned in the heating chamber (8), the output end of the return pipe (8) is connected with the air inlet of the fan (4).
  2. 2. A biomass carbonization device for soil remediation according to claim 1, characterized in that the powder unit (7) is a cyclone separator, the inlet end of which is connected to the output end of the mixing tube (6), the solid phase output end of which is a biomass carbon outlet, and the gas phase output end of which is connected to the input end of the return tube (8).
  3. 3. A biomass carbonization device for soil remediation according to claim 1, further comprising an expansion exchanger (9), the middle part of the return pipe (8) being provided with the expansion exchanger (9).
  4. 4. A biomass carbonization device for soil remediation according to claim 1, further comprising a gas distribution head (10), the gas distribution head (10) being mounted on the output end of the upper air duct (5), the gas distribution head (10) being located at the bottom of the pyrolysis chamber of the carbonization furnace (3).
  5. 5. Biomass carbonization device for soil remediation according to claim 1, further comprising a pressure relief pipe (11) and a burner (12), the pressure relief pipe (11) being connected to the return pipe (8), the burner (12) being mounted at the end of the pressure relief pipe (11), the burner (12) being electrically connected to the heating unit (2).
  6. 6. A biomass carbonization device for soil remediation according to claim 5, further comprising a pressure limiting valve (13), the pressure limiting valve (13) being mounted on the pressure relief tube (11).
  7. 7. The biomass carbonization device for soil remediation according to claim 1, further comprising a middle partition plate (14) and a guide cover (15), wherein the middle partition plate (14) is installed in the middle of a pyrolysis chamber of the carbonization furnace (3), the middle partition plate (14) is arranged in a forward conical manner, a first through hole is formed in the middle of the middle partition plate (14), the guide cover (15) is installed at the top of the pyrolysis chamber of the carbonization furnace (3), the guide cover (15) is in an inverted conical shape, and a second through hole is formed in the middle of the guide cover (15).
  8. 8. The biomass carbonization device for soil remediation according to claim 7, further comprising a receiving hopper (16) and a discharging pipe (17), wherein the receiving hopper (16) is arranged at the upper part of the pyrolysis chamber of the carbonization furnace (3), the receiving hopper (16) is arranged below the air guide sleeve (15), the discharging pipe (17) is arranged at the bottom of the receiving hopper (16), the output end of the discharging pipe (17) extends out of the outside of the heating box (1), and a valve is arranged on the discharging pipe (17).
  9. 9. Biomass carbonization equipment for soil remediation according to claim 1, further comprising a lifting pipe (18), a feed hopper (19), a helical blade (20), a driving machine (21) and a feeding pipe (22), wherein the lifting pipe (18) is installed in the heating chamber of the heating box (1), the feed hopper (19) is arranged at the lower end of the lifting pipe (18), the feed hopper (19) is communicated with the interior of the lifting pipe (18), the helical blade (20) is rotatably installed in the lifting pipe (18), the driving machine (21) is installed above the lifting pipe (18), the driving machine (21) is in transmission connection with the helical blade (20), the upper end of the feeding pipe (22) is communicated with the upper end of the lifting pipe (18), and the lower end of the feeding pipe (22) extends into the lower part of the pyrolysis chamber of the carbonization furnace (3).
  10. 10. A biomass carbonization device for soil remediation according to claim 9, further comprising a steam pipe (23), wherein the lower end of the steam pipe (23) is connected to the inside of the upper end of the lifting pipe (18), and the upper end of the steam pipe (23) extends out of the heating box (1).

Description

Biomass carbonization equipment for soil remediation Technical Field The invention relates to the technical field of biomass carbonization, in particular to biomass carbonization equipment for soil remediation. Background Biomass is pyrolyzed under anoxic or oxygen limiting conditions to convert unstable organic carbon into highly aromatic stable carbon structures, i.e., biochar. Biochar is generally porous in structure, can adsorb harmful substances, improve the physical environment of soil, and is a beneficial microorganism, thereby systematically restoring soil. The invention discloses a biomass carbonization comprehensive recycling treatment device and a biomass carbonization comprehensive recycling treatment method, wherein the biomass carbonization treatment device comprises a crushing and pulverizing device, an upper feeder, a pyrolyzer, a fan, a cold water storage tank, a discharging belt, a gas collector and a dust filter, wherein the crushing and pulverizing device, the upper feeder, the pyrolyzer, the fan, the cold water storage tank, the discharging belt, the gas collector and the dust filter are arranged on a movable vehicle plate, the bottom of the crushing and pulverizing device is connected with a first air pipe, one end of the first air pipe is connected with the dust filter, the other end of the first air pipe is connected with the fan, and the lower end of the first air pipe is provided with a discharging pipe. But above-mentioned carbonization equipment is at the during operation, and biomass raw materials piles up the bottom at the pyrolyzer and surrounds the heating rod, leads to biomass raw materials's inhomogeneous that is heated, leads to biomass carbonization inhomogeneous, and the quality is difficult for controlling. Disclosure of Invention In order to solve the technical problems, the invention provides biomass carbonization equipment for soil remediation, which is used for fully and uniformly heating biomass raw materials by using circulating hot air, sorting by using density change of biomass and improving uniformity of biochar. The biomass carbonization equipment for soil remediation comprises a heating box and a heating unit, wherein a heating chamber is arranged in the heating box, the heating unit is arranged on the heating box, and the heating end of the heating unit extends into the heating chamber of the heating box; the carbonization furnace is vertically arranged in a heating chamber of the heating box, the heating end of the heating unit is used for heating the carbonization furnace, a pyrolysis chamber is arranged in the carbonization furnace, an air outlet of the fan is connected with an input end of the upper air pipe, an output end of the upper air pipe stretches into the bottom of the pyrolysis chamber of the carbonization furnace, an input end of the mixing pipe stretches into the top of the pyrolysis chamber of the carbonization furnace, an output end of the mixing pipe is connected with an input end of the powder unit, the powder unit is used for separating hot air from biomass carbon, an input end of the return pipe is connected with a gas outlet of the powder unit, the return pipe is arranged in the heating chamber of the heating box, an output end of the return pipe is connected with an air inlet of the fan, the return pipe is arranged in the heating chamber of the heating box and is close to a heating end of the heating unit, so that air waste heat in the heating chamber of the heating box heats gas in the return pipe, biomass raw materials crushed to a certain granularity are input into the pyrolysis chamber of the carbonization furnace through the feeding mechanism, the biomass raw materials are heated in the pyrolysis chamber of the carbonization furnace, the biomass raw materials are simultaneously heated in the pyrolysis chamber of the carbonization furnace, the gas is enabled to flow in the upper air, the mixing pipe, the biomass raw materials are enabled to flow from the bottom of the heating pipe and the heating pipe to form a fluidized bed through the heating pipe, the air circulation state from the bottom of the heating pipe, the biomass raw material is heated by hot air and the outer wall of the carbonization furnace in a double way so as to gradually pyrolyze and carbonize, the biomass raw material is fully and quickly contacted with the hot air, the heat transfer efficiency is improved, as the pyrolysis and carbonization of the biomass raw material are carried out, the pore space of the biomass raw material is increased, the density of the biomass raw material is reduced, the newly added and incompletely carbonized raw material with higher density is remained at the middle lower part to continuously react by controlling the wind speed and the temperature of the hot air, the completely carbonized biomass carbon with lower density naturally floats to the top of a pyrolysis chamber of the carbonization furnace along with the hot air flow and is