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Method and apparatus for producing diesel oil through biomass gasification

A biomass and diesel technology, applied in the preparation of liquid hydrocarbon mixtures, fixed bed gasification, combustible gas purification, etc., can solve the problems of single ratio of synthesis gas, small processing capacity, low investment cost, etc., to reduce operating costs, Small amount of processing and simple effects

Active Publication Date: 2017-05-17
SEDIN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fluidized bed gasifiers can be divided into bubbling fluidized bed gasifiers, circulating fluidized bed gasifiers and double fluidized bed gasifiers, which have the characteristics of uniform heating and low tar content. pressure or low pressure, the gasification pressure will not exceed 1.0MPa, the processing capacity is small, the tar generated during gasification will cause blockage and corrosion to subsequent equipment, and the synthesis gas produced by gasification H 2 / CO ratio is single, and there are many problems in the gasification wastewater containing dust and tar
[0004] Chinese patent, patent number: 201210493250.4 discloses a method and device for preparing synthesis gas by pressurized gasification of a biomass fixed bed. The problem of clogging and corrosion of equipment, and the H of syngas 2 The / CO ratio also has no adjustment function, and even more dusty and tar-containing gasification wastewater is produced during the gasification process
[0005] After searching, no method has been found to prepare liquid fuel by fixed-bed pressurized gasification using biomass as raw material, especially the method with high gasification efficiency, simple follow-up treatment process and low investment cost

Method used

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  • Method and apparatus for producing diesel oil through biomass gasification
  • Method and apparatus for producing diesel oil through biomass gasification

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Embodiment 1

[0054] An integrated oil and gas cracking purifier, which includes a burner 1, a cracker 2 and a purifier 3, the burner 1, the cracker 2 and the purifier 3 are coupled as one, and the top of the cracker 2 is connected to the burner 1, the cracker 2 and the The purifier 3 is connected as a whole through the housing 13, the upper part is the cracker 2, and the lower part is the purifier 3.

[0055] The burner 1 is provided with a gas inlet 4, an oxygen inlet 5, a cooling water inlet, a cooling water outlet and an ignition inspection device 8. From the inside to the outside, from top to bottom, a gas channel, a first cooling water channel, an oxygen channel and the second cooling water channel, the gas channel has a gas inlet 4, the first cooling water channel has a first cooling water inlet 6-1, the first cooling water outlet 7-1, the oxygen channel has an oxygen inlet 5, and the second cooling water The channel has a second cooling water inlet 6-2, a second cooling water outlet...

Embodiment 2

[0067] The porous medium packed into the purifier 3 is activated carbon, and the filling amount is 11 / 18 of the volume of the purifier.

[0068] Specific steps include:

[0069] 1. Prepare biomass into poplar wood with a particle size of 12mm-60mm and feed it into the gasifier through the silo. The ratio of steam, oxygen and carbon dioxide is 4.5kg: 1Nm 3 :3.7Nm 3, the gasification pressure is 3.0MPa, the temperature is 850 degrees, through the gasifier gasification, the generated coal gas and oxygen are mixed through the burner according to the volume ratio of 1:1.0-5.0, and then enter the cracker at a speed of 67m / s , Combustion and cracking at a temperature higher than 1305 degrees to generate small molecular substances. The small molecular substances generated by cracking enter the purifier, and the dust is removed when the porous medium is filled, so that the dust content in the crude gas of the purifier is below 5mg, and the heat generated is recovered through the doub...

Embodiment 3

[0074] The porous medium loaded into the purifier 3 is coke, and the filling amount is 1 / 2 of the volume of the purifier.

[0075] Specific steps include:

[0076] 1. Prepare biomass into poplar wood with a particle size of 15-70mm and feed it into the gasifier through the silo, with the ratio of steam, oxygen and carbon dioxide at 4kg: 1Nm 3 :3.8Nm 3 The ratio of steam to oxygen is 4.0kg / Nm 3 , the gasification pressure is 2.45MPa, and the temperature is 860 degrees. After being gasified by the gasifier, the generated coal gas and oxygen are mixed through the burner at a volume ratio of 1:9.15, and then enter the cracker at a speed of 65m / s. Combustion and cracking at 1356 degrees to generate small molecular substances. The small molecular substances generated by cracking enter the purifier, and the dust is removed when the porous medium is filled, so that the dust content in the crude gas of the purifier is below 3mg, and the heat generated is recovered through the double...

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Abstract

A method for producing diesel oil through biomass gasification comprises: adding biomass into a fixed bed pressure gasifier for gasification to generate dust and oil containing gas, sending the dust and oil containing gas into an integrated oil gas cracking purifier for cracking purification, cooling, converting and purifying coarse gas generated from cracking purification to obtain purified gas, reacting the purified gas through a fixed bed or a slurry bed reactor in the function of an iron-based or cobalt-based catalyst to obtain a liquid product, and hydrorefining the liquid product to obtain 75-80 wt% of diesel oil, 15-20 wt% of gasoline, 2-4 wt% of liquefied petroleum gas and a part of special wax. The method is high in gasification efficiency, simple in subsequent processing flow, and low in investment cost.

Description

technical field [0001] The invention relates to the technical field of preparing biodiesel from biomass, in particular to a method and equipment for producing diesel from biomass gasification. Background technique [0002] Energy is the basis for the survival and development of modern society. The supply capacity of energy is closely related to the sustainable development of the national economy and is one of the foundations of national strategic security. At present, my country's main energy comes from fossil energy such as coal, oil, and natural gas. As a one-time energy source, in addition to limited storage, fossil energy will inevitably cause environmental problems such as air pollution, atmospheric warming, sea level rise, and acid rain when used. From a long-term perspective, one or more renewable energy sources must be sought as a supplement and diversified development. Biomass energy is a low-sulfur fuel that is renewable and does not increase greenhouse gases. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/06C10J3/20C10G2/00C10K1/16C10L1/02C10G45/08
CPCC10G2/00C10G45/08C10G2400/02C10G2400/04C10J3/06C10J3/20C10K1/16C10L1/02Y02E50/30Y02P20/10
Inventor 左永飞崔晓曦韩涛宋乐闫少伟
Owner SEDIN ENG