Low-heat-value material gasification calcination device

Abstract

The invention discloses a low-heat-value material gasification calcination device which comprises a furnace body. A dispersing part and a material blowing and flattening part are arranged in the furnace body; the dispersing part comprises a conical dispersing device; the material blowing and flattening part comprises one or more material blowing parts which are arranged along the circumferential direction of the furnace body; and a calcination section is arranged at the position, located under the material blowing and flattening part, of the furnace body. The low-heat-value material gasification calcination device further comprises a waist air part, wherein the waist air part comprises an air supply part, multiple temperature detection parts and multiple oxygen content detection parts; themultiple temperature detection parts are used for detecting the temperature of different parts on a calcination section in the calcination section; the multiple oxygen content detection parts are used for detecting the oxygen contents of the different parts on the calcination section in the calcination section; the air supply part is used for providing air; and an afterburning port is further formed in the position, located above the calcination section, on the furnace body, and is used for supplementing high-heat-value materials into the furnace body. According to the device, the use of thehigh-heat-value materials can be reduced, the cost is reduced, meanwhile, low-heat-value materials are sufficiently calcined, and heat is recovered.

Description

technical field [0001] The invention relates to the technical field of material combustion devices, in particular to a low calorific value material gasification and calcination device. Background technique [0002] In industrial production, a large amount of low calorific value solid materials are often produced, especially the low calorific value solid materials represented by coal gangue, sludge, coal slime and oil sludge, which have the characteristics of huge discharge and stockpiling. Taking coal gangue as an example, coal gangue is the industrial waste with the largest discharge in my country, accounting for about a quarter of my country's industrial solid waste. Calorific value and a large amount of ash. At present, there are about 5 billion tons of coal gangue stored in coal mines across the country (including a large amount of low calorific value coal gangue), covering an area of ​​nearly 20,000 mu, and adding more than 300 million tons every year, so it has become ...

AI Technical Summary

Problems solved by technology

Due to the large amount of solid materials with low calorific value, a large amount of high calorific value materials is required, which will increase the cost

At the same time, due to environmental protection requirements, a large amount of flue gas generated by calcination needs to be treated after utilization, which increases a large amount of investment and complicated process links, resulting in poor economic benefits and difficult promotion.

[0005] In addition, when coal gangue is processed at present, ordinary combustion beds are often used for calcination. During calcination, a large amount of coal gangue will be mechanically and naturally placed on the combustion bed. As a result, the calcination of coal gangue is uneven, a large amount of calorific value cannot be effectively utilized, and the treatment effect of coal gangue is relatively poor; furthermore, when the unevenly calcined coal gangue is used as a cement mixture, its performance is relatively low. Poor quality of cement will result in poor quality of cement; and in the prior art, there is no special equipment to process coal gangue, and common calcining devices are used for calcining, which do not consider the characteristics of coal gangue. Therefore, the effect of dealing with coal gangue, especially low calorific value coal gangue, is often poor.

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