CN-224226676-U - Biomass activated carbon preparation system

CN224226676UCN 224226676 UCN224226676 UCN 224226676UCN-224226676-U

Abstract

The application discloses a biomass activated carbon preparation system, and belongs to the field of activated carbon preparation. The device comprises a feeding component, a reaction furnace, a material returning component, a gas-solid separator and a steam heat exchange component, wherein the reaction furnace is provided with a feeding port, a gas outlet, a material returning inlet and a solid outlet, the feeding component is used for adding carbonaceous raw materials into the reaction furnace, the gas-solid separator is provided with a gas inlet, a material returning port, a discharge port and a gas outlet, the gas inlet of the gas-solid separator is communicated with the gas outlet of the reaction furnace, the material returning port of the gas-solid separator is communicated with the feeding end of the material returning component, the discharge end of the material returning component is communicated with the material returning inlet of the reaction furnace, the gas outlet is communicated with the steam heat exchange component, the steam heat exchange component is respectively communicated with the reaction furnace and the material returning component, the steam heat exchange component is used for introducing steam into the reaction furnace and the material returning component, and the solid outlet is used for discharging particle primary activated carbon.

Inventors

YANG SHAOJUN
WANG DAN
LIU SHUYUAN
LIU LU
ZHANG QI
ZHANG XIAOJING

Assignees

中科合肥煤气化技术有限公司

Dates

Publication Date: 20260512
Application Date: 20250414

Claims (11)

1. The biomass activated carbon preparation system is characterized by comprising a feeding component, a reaction furnace, a returning component, a gas-solid separator and a steam heat exchange component; The reaction furnace is provided with a feed inlet, a gas outlet, a return inlet and a solid outlet, the feed component is used for adding carbonaceous raw materials into the feed inlet of the reaction furnace, the gas-solid separator is provided with a gas inlet, a return inlet, a discharge outlet and a gas outlet, the gas inlet of the gas-solid separator is communicated with the gas outlet of the reaction furnace, the return inlet of the gas-solid separator is communicated with the feed end of the return component, the discharge end of the return component is communicated with the return inlet of the reaction furnace, the gas outlet of the gas-solid separator is communicated with the steam heat exchange component, the steam heat exchange component is respectively communicated with the reaction furnace and the return component, and the steam heat exchange component is used for introducing water vapor into the reaction furnace and the return component; The solid outlet of the reaction furnace is used for discharging the particle primary activated carbon, and the discharge port of the gas-solid separator is used for discharging the particle primary activated carbon.
2. The biomass activated carbon production system of claim 1, wherein the steam heat exchange assembly comprises a heat exchanger and a steam generator; The gas outlet of the gas-solid separator is communicated with the inlet of the heat medium channel of the heat exchanger, the heat medium channel of the steam generator is communicated with the cold medium channel of the heat exchanger to form circulation, and the steam channel of the steam generator is respectively communicated with the reaction furnace and the material returning assembly.
3. The biomass activated carbon production system according to claim 2, wherein the reaction furnace has a carbonization reaction generating section and an activation reaction generating section connected; the steam channel of the steam generator is respectively communicated with the carbonization reaction generating part and the activation reaction generating part; Wherein, the charge door and the solid outlet are both located in the carbonization reaction generating part, and the gas outlet and the return inlet are both located in the activation reaction generating part.
4. The biomass activated carbon production system of claim 2, further comprising a dust removal assembly; The heat medium channel outlet of the steam heat exchange assembly is communicated with the dust removal inlet of the dust removal assembly, the dust removal assembly is used for removing dust from flue gas entering the dust removal assembly, the dust removal assembly is provided with a discharge outlet, and the discharge outlet is used for discharging primary activated carbon.
5. The biomass activated carbon production system of claim 4, further comprising a first water-cooled screw; The first water-cooling spiral is located at the discharging outlet of the dust removing assembly and is used for cooling primary activated carbon discharged from the discharging outlet.
6. The biomass activated carbon production system of claim 2, further comprising a hot air component; The hot air component is communicated with the reaction furnace and is used for injecting high-temperature flue gas into the reaction furnace.
7. The biomass activated carbon production system of claim 6, further comprising a mixer; The steam channel of the steam generator and the hot air component are both communicated with the mixer, the mixer is communicated with the reaction furnace, and the mixer is used for mixing the steam transmitted by the steam generator, the high-temperature flue gas and air transmitted by the hot air component to obtain mixed gas, and transmitting the mixed gas to the reaction furnace.
8. The biomass activated carbon production system of any one of claims 1-7, further comprising a second water-cooled screw; The second water-cooling spiral is positioned at the solid outlet of the reaction furnace and is used for cooling the primary activated carbon discharged from the solid outlet of the reaction furnace.
9. The biomass activated carbon production system of any one of claims 1 to 7, further comprising a third water-cooled screw; The third water-cooling spiral is positioned at the discharge port of the gas-solid separator and is used for cooling the nascent activated carbon discharged from the discharge port of the gas-solid separator.
10. The biomass activated carbon production system of any one of claims 1-7, further comprising a silo; the bin is configured to store the carbonaceous feedstock, and an outlet of the bin is oriented toward the feed assembly.
11. The biomass activated carbon production system according to any one of claims 1 to 7, wherein the carbonaceous feedstock comprises coal, biomass, the biomass comprises straw, stumps, weeds, fallen leaves, fruit shells, vines or branches; wherein the particle size of the carbonaceous feedstock ranges from 10mm to 50mm.

Description

Biomass activated carbon preparation system Technical Field The application belongs to the field of activated carbon preparation, and particularly relates to a biomass activated carbon preparation system. Background With the increasing global demand for renewable energy, biomass energy is an important renewable energy source, and development and utilization thereof have received extensive attention. Biomass energy is mainly characterized in that organic matters such as crops and plant wastes are used as fuel, and are converted into heat energy, electric energy and chemical energy through pyrolysis, gasification, liquefaction and other technologies. Among them, biomass pyrolysis is one of the important ways of biomass energy conversion, and it decomposes biomass into products such as bio-oil, bio-char, and combustible gas by heating the biomass under anoxic or oxygen-limited conditions. The activated carbon is an adsorption material with rich pore structures and large surface area, and is widely applied to the fields of environmental protection, chemical industry, energy sources and the like. In the related art, biomass pyrolysis is generally performed using a fixed bed, moving bed, fluidized bed, or the like reactor. The fluidized bed reactor is widely applied to the research of biomass pyrolysis for preparing biological oil and biological carbon due to the advantages of good heat and mass transfer effect, flexible operation, easy maximization and the like. Meanwhile, two methods of physical activation and chemical activation are mainly adopted for preparing the activated carbon. The physical activation is to activate biomass charcoal to form porous structure through high temperature vapor, carbon dioxide or other gas, and the chemical activation is to add zinc chloride, phosphoric acid or other chemical reagent to produce porous structure through dewatering, dehydrogenation or other reaction. However, the existing biomass pyrolysis has the problem of poor quality of the prepared activated carbon. Disclosure of utility model The embodiment of the application aims to provide a biomass activated carbon preparation system, which at least solves the problem of poor quality of prepared activated carbon existing in the existing biomass pyrolysis. In a first aspect, the embodiment of the application provides a biomass activated carbon preparation system, which comprises a feeding component, a reaction furnace, a returning component, a gas-solid separator and a steam heat exchange component; The reaction furnace is provided with a feed inlet, a gas outlet, a return inlet and a solid outlet, the feed component is used for adding carbonaceous raw materials into the feed inlet of the reaction furnace, the gas-solid separator is provided with a gas inlet, a return inlet, a discharge outlet and a gas outlet, the gas inlet of the gas-solid separator is communicated with the gas outlet of the reaction furnace, the return inlet of the gas-solid separator is communicated with the feed end of the return component, the discharge end of the return component is communicated with the return inlet of the reaction furnace, the gas outlet of the gas-solid separator is communicated with the steam heat exchange component, the steam heat exchange component is respectively communicated with the reaction furnace and the return component, and the steam heat exchange component is used for introducing water vapor into the reaction furnace and the return component; The solid outlet of the reaction furnace is used for discharging the particle primary activated carbon, and the discharge port of the gas-solid separator is used for discharging the particle primary activated carbon. Optionally, the steam heat exchange assembly comprises a heat exchanger and a steam generator; The gas outlet of the gas-solid separator is communicated with the inlet of the heat medium channel of the heat exchanger, the heat medium channel of the steam generator is communicated with the cold medium channel of the heat exchanger to form circulation, and the steam channel of the steam generator is respectively communicated with the reaction furnace and the material returning assembly. Optionally, the reaction furnace is provided with a carbonization reaction generating part and an activation reaction generating part which are connected; the steam channel of the steam generator is respectively communicated with the carbonization reaction generating part and the activation reaction generating part; Wherein, the charge door and the solid outlet are both located in the carbonization reaction generating part, and the gas outlet and the return inlet are both located in the activation reaction generating part. Optionally, the biomass activated carbon preparation system further comprises a dust removal component; The heat medium channel outlet of the steam heat exchange assembly is communicated with the dust removal inlet of the dust removal assembly, the dust removal assemb