Device and method for preparing light aromatic hydrocarbon from biomass

A technology of light aromatics and biomass, which is applied in the preparation of liquid hydrocarbon mixtures, biofuels, pyroligneous acid, etc., can solve problems such as high operating costs, poor heat transfer, and weak raw material processing capabilities, and achieve increased revenue. High efficiency, high heat transfer efficiency, and the effect of reducing fine ash content

Pending Publication Date: 2021-05-11
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of the fixed bed type mainly include problems such as uneven temperature distribution, poor heat transfer, weak raw material processing capacity, and inability to replace the catalyst. The fluidized bed type is difficult to separate the fluidized medium from the catalyst, and the operating cost of reverse gravity field transportation is relatively high. , and has not been promoted in the process system of biomass catalytic pyrolysis to prepare light aromatics

Method used

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  • Device and method for preparing light aromatic hydrocarbon from biomass
  • Device and method for preparing light aromatic hydrocarbon from biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] combine figure 1 with figure 2 As shown, a device for preparing light aromatics from biomass includes a raw material storage and drying system, a circulating fluidized bed heat carrier heating furnace 1, a reaction system, a gas-solid separation system, a power system, a heat exchanger 4 and a condensation tower 14;

[0050] The raw material storage and drying system comprises a raw material storage tank 6 and a riser dryer 10;

[0051] The reaction system includes a down-bed reactor 5 and a plurality of tubular fixed-bed reactors 13, the down-bed reactor 5 and the tubular fixed-bed reactors 13 are connected in series, and the plurality of tubular fixed-bed reactors 13 are Parallel connection, recycling;

[0052] The gas-solid separation system includes a group A gas-solid separation system, a group B gas-solid separation system and a group C gas-solid separation system. The gas-solid separation system of group C is arranged at the outlet of the down-bed reactor 5, ...

Embodiment 2

[0086] combine figure 1 with figure 2 As shown, a device for preparing light aromatics from biomass includes a raw material storage and drying system, a circulating fluidized bed heat carrier heating furnace 1, a reaction system, a gas-solid separation system, a power system, a heat exchanger 4 and a condensation tower 14;

[0087] The raw material storage and drying system comprises a raw material storage tank 6 and a riser dryer 10;

[0088] The reaction system comprises a down-bed reactor 5 and a plurality of tubular fixed-bed reactors 13, the down-bed reactor 5 and the tubular fixed-bed reactors 13 are connected in series, and the plurality of tubular fixed-bed reactors 13 are Parallel connection, recycling;

[0089] The gas-solid separation system includes a group A gas-solid separation system, a group B gas-solid separation system and a group C gas-solid separation system. The gas-solid separation system of group C is arranged at the outlet of the down-bed reactor 5,...

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Abstract

The invention provides a device and method for preparing light aromatic hydrocarbon from biomass, the device comprises a raw material storage drying system, a circulating fluidized bed heat carrier heating furnace, a reaction system, a gas-solid separation system, a power system, a heat exchanger and a condensing tower, the reaction system comprises a downer reactor and a tubular fixed bed reactor which are connected in series; the gas-solid separation system comprises a group A gas-solid separation system arranged at a discharge port of the circulating fluidized bed heat carrier heating furnace, a group B gas-solid separation system arranged at a discharge port of the downer reactor and a group C gas-solid separation system arranged at a feed port of the downer reactor, and the group A gas-solid separation system comprises a three-stage cyclone separation device; the group B gas-solid separation system comprises a second-stage cyclone separation device, and the group C gas-solid separation system comprises a first-stage cyclone separation device, so that the system has the advantages of high efficiency, energy conservation, high yield of light aromatic hydrocarbon and easiness in industrial continuous production.

Description

technical field [0001] The invention belongs to the technical field of biomass pyrolysis, in particular to a device and method for preparing light aromatics from biomass. Background technique [0002] At present, light aromatics (benzene, toluene and xylene) are important organic chemical raw materials, mainly used in the production of rubber, fiber, plastics, resins, coatings and pesticides, etc., and are also important blending components of high-octane clean gasoline . At present, light aromatics mainly come from petroleum catalytic reforming and pyrolysis gasoline. my country is short of oil resources. It is estimated that the dependence on foreign countries will reach 84.6% by 2035, which seriously threatens my country's energy security. It is important to realize the diversification of raw materials for light aromatics production in the future. development trend. Biomass is the only clean and renewable energy in nature that can be converted into liquid fuels. my coun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10B57/10C10C5/00C10G1/00
CPCC10B53/02C10B57/10C10C5/00C10G1/002Y02E50/10
Inventor 盖希坤杨丹陈莉镌邸婧肖竹钱李音吕鹏杨瑞芹
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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