Urea pyrolysis system and urea pyrolysis method

A urea and pyrolysis technology, which is applied to the urea pyrolysis system and the field of pyrolysis urea, can solve the problems of high operation cost and high power consumption of the system, and achieve the effect of reducing power consumption and operation cost and having a simple structure.

Inactive Publication Date: 2020-06-23
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heating device in the traditional urea pyrolysis system needs to use a high-power electric heater, resulting in high power consumption of the system and high operating costs

Method used

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  • Urea pyrolysis system and urea pyrolysis method

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Embodiment 1

[0023] Embodiment 1 of the present invention: a urea pyrolysis system, comprising a boiler 1, a high-temperature dust removal device 2, and a pyrolysis furnace 3, and the boiler 1 is provided with a low-temperature superheater 4 and a coal-saving coal-saving device arranged below the low-temperature superheater 4 The flue gas outlet 6 is provided at the flue between the low temperature superheater 4 and the economizer 5, the high temperature dust removal device 2 is connected with the flue gas outlet 6, and the high temperature dust removal device 2 passes through the transition flue 7 is connected to the pyrolysis furnace 3 .

Embodiment 2

[0024] Embodiment 2 of the present invention: a urea pyrolysis system, comprising a boiler 1, a high-temperature dust removal device 2, and a pyrolysis furnace 3, and the boiler 1 is provided with a low-temperature superheater 4 and a coal-saving coal-saving device arranged below the low-temperature superheater 4 The flue gas outlet 6 is provided at the flue between the low temperature superheater 4 and the economizer 5, the high temperature dust removal device 2 is connected with the flue gas outlet 6, and the high temperature dust removal device 2 passes through the transition flue 7 is connected to the pyrolysis furnace 3 . The transition flue 7 is provided with a high-temperature induced draft fan 8. The transition flue 7 includes a first transition flue section 701 and a second transition flue section 702. The air inlet of the fan 8 is connected, and the pyrolysis furnace 3 is connected to the air outlet of the high temperature induced draft fan 8 through the second trans...

Embodiment 3

[0025] Embodiment 3 of the present invention: a urea pyrolysis system, comprising a boiler 1, a high-temperature dedusting device 2, and a pyrolysis furnace 3, wherein the boiler 1 is provided with a low-temperature superheater 4 and a coal-saving coal-saving device arranged below the low-temperature superheater 4 The flue gas outlet 6 is provided at the flue between the low temperature superheater 4 and the economizer 5, the high temperature dust removal device 2 is connected with the flue gas outlet 6, and the high temperature dust removal device 2 passes through the transition flue 7 is connected to the pyrolysis furnace 3 . The transition flue 7 is provided with a high-temperature induced draft fan 8. The transition flue 7 includes a first transition flue section 701 and a second transition flue section 702. The air inlet of the fan 8 is connected, and the pyrolysis furnace 3 is connected to the air outlet of the high temperature induced draft fan 8 through the second tran...

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Abstract

The invention discloses a urea pyrolysis system. The system comprises a boiler, a high-temperature dust removal device and a pyrolyzing furnace. A low-temperature super-heater and an economizer arranged below the low-temperature super-heater are arranged in the boiler, a flue gas outlet is formed in a flue between the low-temperature super-heater and the economizer, the high-temperature dust removal device is connected with the flue gas outlet, and the high-temperature dust removal device is connected with the pyrolyzing furnace through a transition flue. The system is simple in structure, theflue gas outlet is formed in the flue between the low-temperature super-heater and the economizer, high-temperature flue gas is led out through the flue gas outlet, and the high-temperature flue gasis conveyed to the pyrolyzing furnace after being subjected to a dust removal treatment by the high-temperature dust removal device and is applied for urea pyrolysis. An electric heater with high power consumption in an existing urea pyrolysis system is omitted, and the power consumption and the operation cost of the urea pyrolysis system are reduced.

Description

technical field [0001] The invention relates to a urea pyrolysis system and a method for pyrolysis of urea, belonging to the field of urea pyrolysis treatment. Background technique [0002] The urea pyrolysis in the traditional urea pyrolysis system is mainly carried out in the pyrolysis reactor. The gas is heated by the heating device as a reaction heat source and enters the pyrolysis reactor to completely decompose the urea sent to the ammonia injection system. The heating device in the traditional urea pyrolysis system needs to use a high-power electric heater, resulting in high system power consumption and high operating cost. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a urea pyrolysis system and a method for pyrolysis of urea, which have low power consumption and low operating cost. [0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: a urea pyrolysis ...

Claims

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Application Information

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IPC IPC(8): C01C1/08
CPCC01C1/086
Inventor 刘晓立吴冲孙路长
Owner CHINA HUADIAN ENG
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