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Device and method for preparing ammonia gas based on chemical chain reaction

A chemical chain, ammonia technology, applied in chemical instruments and methods, ammonia preparation/separation, chemical/physical processes, etc., can solve problems such as insufficiency, prevent energy loss, improve economy, and uniform temperature distribution Effect

Active Publication Date: 2018-09-21
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this stage, the kinetic research on how to promote the hydrolysis of AlN is not sufficient

Method used

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  • Device and method for preparing ammonia gas based on chemical chain reaction

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, the present invention will be further described

[0035] like figure 1 As shown, the device for preparing ammonia based on the chemical chain reaction consists of an air separator:

[0036] Air separator 1, booster fan I2, nitrogen absorption reactor 3, buried tube heat exchanger I4, material circulation device I5, booster fan II6, carbon removal reactor 7, buried tube heat exchanger II8, material circulation Device II9, nitrogen release reactor 10 buried tube heat exchanger III11, steam generator 12, gas mixer 13, circulation fan 14, drying device 15, pressure device 16, material circulation device III17; among them, the air separator 1 The separated nitrogen and nitrogen-oxygen mixed gases are respectively connected to the bottom of the nitrogen absorption reactor 3 and the carbon removal reactor 7 through the booster fan I2 and the booster fan II6 through two outlets, and the middle part of the nitrogen absorption reac...

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Abstract

The invention discloses a device and method for preparing ammonia gas based on a chemical chain reaction. The device comprise a circulating fluidized bed reactor, a buried pipe type heat exchanger, amaterial circulating device and a gas generating, mixing, separating and conveying device. Air is separated and then conveyed into a nitrogen absorption reactor, the air and pulverized coal act together to convert an oxygen carrier into a nitrogen carrier, after the reaction is carried out sufficiently, residual solid is conveyed into a decarbonization reactor through the material circulating device and fully reacts with the residual air from an air separator, the unreacted pulverized coal is sufficiently burnt, and the pulverized coal is separated from the nitrogen carrier. The nitrogen carrier is conveyed into a nitrogen-releasing reactor through the material circulating device, generates the ammonia gas under the action of water vapor, and is reduced into the oxygen carrier. The reducedoxygen carrier is conveyed back into the nitrogen absorption reactor through the circulation device for a circulation reaction. Compared with a traditional ammonia production technology, raw materials are wide in source, the conversion rate is high, and the method is a resource-saving and environment-friendly ammonia production method.

Description

technical field [0001] The invention relates to a method for preparing ammonia, in particular to a method for preparing ammonia through conversion of fossil fuel chemical chain reaction. The invention belongs to the field of solid fuel combustion and chemical chain reaction. Background technique [0002] With the rapid development of the world economy, more and more traditional fossil energy (coal, oil, natural gas) are continuously being developed and utilized by us, and various environmental problems caused by excessive combustion of fossil fuels are becoming more and more serious. In order to alleviate the increasingly severe environmental problems, various clean energy sources and corresponding production technologies are being vigorously developed. [0003] Ammonia is a gaseous fuel with excellent properties. Its combustion products are water and nitrogen, which do not have any impact on the environment. Compared with the first-generation clean fuel hydrogen with its ...

Claims

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Application Information

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IPC IPC(8): B01J8/26B01J8/18C01C1/02
CPCB01J8/1809B01J8/1818B01J8/1827B01J8/1836B01J8/26B01J2208/00132C01C1/02
Inventor 吴烨高原赵文文刘岩刘冬
Owner NANJING UNIV OF SCI & TECH
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