Regenerative gasification device for high calorific value synthesis gas and gasification production method based on device

Abstract

The invention discloses a regenerative gasification device for high calorific value synthesis gas. The regenerative gasification device comprises a gasification chamber, a blower and a four-way valve, wherein a synthesis gas outlet for storing a synthesis gas pipeline is formed in the top end of the gasification chamber; a radiant tube is arranged inside the gasification chamber; a first regenerative chamber and a second regenerative chamber are separately arranged at two ends of the radiant tube and are also arranged outside the gasification chamber; an overheat steam pipeline is also arranged in the gasification chamber; the blower and the four-way valve are arranged outside the gasification chamber; air is fed into the four-way valve by the blower, passes through the four-way valve and then enters the first regenerative chamber; flue gas exhausted from the second regenerative chamber passes through the four-way valve and enters a water feeding heat exchanger by an induced draft fan; an overheat steam outlet is formed on the water feeding heat exchanger. According to the regenerative gasification device disclosed by the invention, heat is provided for the system in the regenerative radiant tube, and gasification is realized in the gasification chamber; nitrogen gas is effectively separated from the synthesis gas, and no nitrogen is contained in the synthesis gas, so that the calorific value of the synthesis gas is improved, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of gasification, in particular to a regenerative high-calorific-value syngas gasification device and a gasification production method based on the device. Background technique [0002] Currently, there are three main types of industrial coal gasification processes: fixed bed gasification, fluidized bed gasification and entrained bed gasification. The gasification agent is mostly air, oxygen, carbon dioxide or water vapor. The traditional gasification technology is that the combustion aid and the gasification agent enter the gasification chamber together, and gasify while burning. The carbon dioxide produced by combustion and the nitrogen carried by the air enter the synthesis gas, resulting in a low calorific value of the synthesis gas, which affects the application field of the synthesis gas. In order to increase the calorific value of synthesis, pure oxygen is used to produce synthesis gas. Although the ...

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Problems solved by technology

The carbon dioxide produced by combustion and the nitrogen carried by the air enter the synthesis gas, resulting in a low calorific value of the synthesis gas, which affects the application field of the synthesis gas

In order to increase the calorific value of synthesis, pure oxygen is used to produce synthesis gas. Although the requirements for calorific value are met, the production cost is greatly increased, and the application and promotion are also inhibited.

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