Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source

A technology of high-temperature flue gas and urea, which is applied in the field of urea-ammonia production process, can solve the problems of large energy consumption and achieve the effects of high equipment integration, reduced dust content, and easy operation

Inactive Publication Date: 2015-04-29
浙江百能科技有限公司
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Problems solved by technology

The main disadvantage of this ammonia production method is that the energy consumption is too large

Method used

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  • Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0024] Such as figure 1 Shown is a urea pyrolysis ammonia production device using high-temperature flue gas as a heat source, using a swirling flow pyrolysis furnace 7 as a reactor for pyrolysis of urea and a mixer fully mixed with a dilution medium (flue gas). This kind of urea pyrolysis ammonia production device using high-temperature flue gas as a heat source includes a swirl pyrolysis furnace 7, a bypass flue 4, a flue gas baffle 1, a urea metering device 2, a mechanical atomization spray gun 3, and a flue gas flow rate Sensor 5, flue gas temperature sensor 6, booster fan 9, ash discharge hopper 8, pressure sensor 10 and temperature sensor 11.

[0025] One side of the swirling flow pyrolysis furnace 7 communicates with one end of the bypass flue 4, and the other end of the bypass flue 4 is provided with two inlets, which are the high-temper...

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Abstract

The invention relates to the field of processes for producing ammonia gas through urea, and aims to provide a device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as a heat source. The device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as the heat source comprises a rotational flow pyrolysis furnace, a bypass flue duct, a flue gas baffle, a mechanical atomizing spraying gun, a flue gas flow sensor, a flue gas temperature sensor, a booster fan, an ash discharging bucket, a pressure sensor and a temperature sensor. The device adopts a small amount of high-temperature flue gas close to a high-temperature superheater as the heat source for urea pyrolysis, adopts a cheap low-grade energy source to replace a high-grade energy source, and reduces the consumption of power required by urea pyrolysis and running cost; the device adopts the rotational flow pyrolysis furnace, so that the content of dust in flue gas is effectively reduced, the abrasion of dust against the booster fan is reduced, the work environment of the booster fan is improved, the service life of the booster fan is prolonged, meanwhile, uniform mixing of the urea and the high-temperature flue gas is ensured, and the pyrolysis efficiency of the urea is improved.

Description

technical field [0001] The invention relates to the technical field of urea ammonia production, in particular to a urea pyrolysis ammonia production device using high-temperature flue gas as a heat source. Background technique [0002] With the rapid development of the national economy and the improvement of people's living standards, energy consumption continues to increase. In 2011, coal consumption has reached 3.6 billion tons of standard coal, but the use of combustion as the main method has led to a sharp increase in air pollutants. Acid rain and smog occur frequently, and the pressure on the atmospheric environment continues to increase, causing dissatisfaction among people across the country. To this end, the country has issued a series of air quality standards and air pollution emission control standards. [0003] In the newly published "GB / T13223-2011 Air Pollution Emission Standards for Thermal Power Plants", NO 2 Calculated NOx emissions have stricter standards...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56C01C1/08
CPCY02P20/10
Inventor 周俊虎刘茂省孙振龙张相杨雪峰张江林潘利红
Owner 浙江百能科技有限公司
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