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Method for producing synthesis gas by combustible solid waste chemical chain gasification and interconnected fluidized bed reactor

A fluidized bed reactor, solid waste technology, applied in chemical instruments and methods, production of combustible gas, granular/powder fuel gasification, etc., can solve the problem of restricting the large-scale promotion and utilization of combustible solid waste gasification technology , complex process, increased gasification cost, etc.

Active Publication Date: 2012-09-19
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In a general fluidized bed gasification reactor, if it is desired to obtain high calorific value or hydrogen-rich synthesis gas, it is necessary to provide oxygen-rich gas or high-temperature steam as a gasification agent, which makes the process more complicated and the cost of gasification increases
In addition, the traditional combustible solid waste gasification process will also produce a large amount of tar, which not only affects the overall gasification efficiency of combustible solid waste, but also causes problems such as blockage and corrosion of the reactor and supporting equipment. These problems also restrict combustible solid waste. Large-scale promotion and utilization of solid waste gasification technology
[0003] At present, although there have been a few reports on the gasification of biomass in a serial fluidized bed, in a serial fluidized bed, metal oxides are used as oxygen carriers to make combustible solid waste gasify through a chemical chain reaction. The process of producing syngas is rarely reported

Method used

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  • Method for producing synthesis gas by combustible solid waste chemical chain gasification and interconnected fluidized bed reactor
  • Method for producing synthesis gas by combustible solid waste chemical chain gasification and interconnected fluidized bed reactor
  • Method for producing synthesis gas by combustible solid waste chemical chain gasification and interconnected fluidized bed reactor

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Embodiment Construction

[0030] The present invention is further described below in conjunction with embodiment, but does not constitute limitation to the present invention.

[0031] Select agricultural and forestry processing waste as biomass raw material, with an average particle size of 0.8mm; Fe 2 o 3 The ferric oxide particles with a mass percentage content of 60% are oxygen carriers, and the average particle diameter is 0.5 mm; the inner diameter of the bubbling fluidized bed 2 is 300 mm, and the height is 1200 mm; the diameter of the fluidized bed riser 4 is 100 mm, and the height is 2000 mm. The amount of oxygen carrier particles added is 30-40kg, and fresh oxygen carriers can be added to the bubbling fluidized bed 2 at any time according to the reaction process. The temperature of the bubbling fluidized bed 2 is stabilized within the range of 840-850°C, the temperature of the fluidized bed riser 4 is controlled within 900-950°C, and the synthesized gas is discharged and purified from the exh...

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Abstract

The invention provides a method for producing synthesis gas by combustible solid waste chemical chain gasification and an interconnected fluidized bed reactor. The method is implemented in an interconnected fluidized bed reactor, and the interconnected fluidized bed reactor comprises a fuel reactor and an air reactor communicated with each other internally. The combustible solid waste produces gasification reaction with a carrier of oxygen to produce synthesis gas, and the oxygen element necessary for the gasification of combustible solid waste comes from the lattice oxygen in the carrier component of oxygen; the carrier of oxygen without lattice oxygen is transported to the air reactor, in the air reactor, the carrier of oxygen is re-oxidized by high-temperature air to recovery to lattice oxygen; the carrier of oxygen recovered with lattice oxygen is carried out the air reactor by high-speed air, returns back to the fuel reactor for cycle use and produces gasification reaction with the combustible solid waste again. The invention relates to a high-efficiency combustible solid waste gasification technique breaking the prior art, and the invention can produce high-quality synthesisgas and reduce the contents of tar and carbon deposite during the gasification process.

Description

technical field [0001] The invention relates to the technical field of new energy and renewable energy, in particular to a method for producing synthesis gas by chemical looping gasification of combustible solid waste and a serial fluidized bed reactor. technical background [0002] Due to the decrease of fossil fuels and the environmental pollution caused by the utilization of fossil energy, the research, development and utilization of clean and renewable energy have become an important research topic for energy workers. At present, my country produces 840 million tons of crop straw and 150 million tons of municipal solid waste annually, a considerable proportion of which is combustible solid waste that can be used as energy raw materials. Combustible solid waste, including biomass resources, has the advantages of large resources, renewable, and less environmental pollution. Therefore, the research and development of new and efficient combustible solid waste conversion and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/54C10J3/56C10J3/60B01J8/26
CPCY02E20/18
Inventor 何方李海滨赵增立陈勇李常河王小波
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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