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Method for producing cyanuric acid by utilizing industrial waste heat and tunnel type cracking furnace device

A technology of industrial waste heat and cyanuric acid, which is applied in the direction of furnaces, furnace types, lighting and heating equipment, etc., can solve the problems of high energy consumption of urea cracking, low content of cyanuric acid, and low purity of finished products, and achieve good operating environment and high content , the effect of high purity

Inactive Publication Date: 2015-04-29
福建省邵武市榕丰化工有限公司
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Problems solved by technology

[0008] In order to solve the defects of high energy consumption of urea cracking, low content of cyanuric acid in the crude product, low and unstable product purity, and low process yield in the traditional solid-phase cyanuric acid production process, a method and tunnel for producing cyanuric acid by using industrial waste heat are proposed Type cracking furnace device, to solve the above problems

Method used

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  • Method for producing cyanuric acid by utilizing industrial waste heat and tunnel type cracking furnace device

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example 1

[0022] Sulfur dioxide gas at 900°C produced by sulfur incineration furnaces or fluidized fluidized furnaces in sulfuric acid enterprises enters through the input pipe 6 of industrial waste heat. into the conversion tower. At the same time, urea and cracking aids are input from the urea and cracking aids delivery device 3, and the crude cyanuric acid produced in the cracking reaction is output from the crude cyanuric acid output device 4, with a crude cyanuric acid content of 75-85%. The ammonia gas in the ammonia gas discharge pipeline 5 adopts the centralized collection mode of the induced draft fan, and then enters the dilute sulfuric acid kettle to generate ammonium sulfate product.

example 2

[0024] During the production of sulfuric acid enterprises, the medium-temperature gas of sulfur trioxide at 450°C from the outlet of the conversion tower enters through the input pipe 6 of industrial waste heat, and the temperature of the gas of sulfur trioxide drops to 200°C after passing through the tunnel cracking furnace device, and is discharged from the output pipe 7 of industrial waste heat. According to the process requirements, it will be cooled to below 100°C through the tube air cooling method and enter the dilute sulfuric acid absorption tower to absorb into 98% sulfuric acid or nicotinic acid. At the same time, urea and cracking aids are input from the urea and cracking aids delivery device 3, and the crude cyanuric acid produced by the cracking reaction is output from the crude cyanuric acid output device 4, with a crude cyanuric acid content of 65-80%. The ammonia gas in the ammonia gas discharge pipeline 5 adopts the centralized collection mode of the induced dr...

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Abstract

The invention relates to a method for producing cyanuric acid by utilizing industrial waste heat and a tunnel type cracking furnace device, and belongs to the technical field of production of cyanuric acid by virtue of a solid phase method. According to the method, blast furnaces, heating furnaces and coking are mainly utilized; the waste gas and the waste heat discharged by glass and ceramic kilns and plants such as thermal power plants, iron and steel plants, petrochemical industries and coking plants, or intermediate product gases of the sulfur dioxide and the sulfur trioxide during the production process of vitriol enterprises, which are at high temperature and moderate temperature, release chemical energy through the tunnel type cracking furnace device so as to form the industrial waste heat, and the industrial waste heat is translated into a heat source for urea cracking, thus replacing a fire coal flue gas heat source to produce cyanuric acid crude products; and the content of cyanuric acid in the crude products is high and stable. When the cyanuric acid is produced by virtue of the solid phase method provided by the invention, the industrial waste heat is turned into wealth and utilized, the unit production cost of the cyanuric acid products is low, the product quality is stable, and the purity is high; and the process provided by the invention is simple to operate, good in operation environment, and good in economic and social benefits.

Description

technical field [0001] The invention relates to a method for producing cyanuric acid by utilizing industrial waste heat and a tunnel-type cracking furnace device, belonging to the technical field of solid-phase method cyanuric acid production. Background technique [0002] Cyanuric acid CA (also known as isocyanuric acid or cyanuric acid) is a cyclic triimide, and the N, C, and O on the ring can all react chemically, and its products can form a variety of cyanuric acid derivatives and as Raw materials for high temperature resistant, flame retardant and lubricating synthetic materials. There are hundreds of domestic manufacturers and users, the maximum production capacity exceeds 10,000 tons, and about 50% of the output (partially processed into cyanuric acid derivatives) is exported abroad. In recent years, the production technology and variety development of cyanuric acid and its derivatives have developed rapidly. TGIC), cross-linking agent (TAIC), antioxidant 3114, flam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/32F27B9/00F27B9/36
Inventor 陈世豪陈鼎东黄兵邹福旺吴元金黄绳炀
Owner 福建省邵武市榕丰化工有限公司
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