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Gas-liquid recovery system of urea hydrolysis reactor

A technology of urea hydrolysis and gas-liquid recovery, which is applied in the field of urea hydrolysis and ammonia production system, can solve the problems of inability to exhaust and discharge natural cooling, limited wastewater collection capacity, and irritating gas, so as to reduce impact, ensure quality, The effect of improving the utilization rate

Pending Publication Date: 2021-01-29
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large amount of overpressure exhaust and liquid discharge in the reactor and relatively frequent discharge, and the limited capacity of the urea area to collect waste water, it is impossible to cool

Method used

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  • Gas-liquid recovery system of urea hydrolysis reactor

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] see figure 1 , including a urea hydrolysis reactor 1 and an absorption tank 2 for absorbing the exhaust and liquid discharge of the hydrolyzer; the absorption tank 2 is provided with a gas pressure equalization slow-release pipe 6, and the exhaust of the urea hydrolysis reactor 1 is connected to the absorption tank 2 The gas pressure equalization slow-release pipe 6 inside, the drain of the urea hydrolysis reactor 1 is connected to the absorption tank 2, the absorption tank 2 is provided with desalted water, the urea hydrolysis reactor 1 is connected to the liquid mixer 4 as the liquid input end, and the liquid mixer 4 Connect the urea solution inlet and the mixed solution outlet of the absorption tank 2. A recovery pump 3 is arranged on the connecting pipeline between the absorption tank 2 and the liquid mixer 4 . A mixed solution recovery valve 13 is provide...

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Abstract

The invention discloses a gas-liquid recovery system of a urea hydrolysis reactor. According to the gas-liquid recovery system of the urea hydrolysis reactor of the invention, exhausted gas and discharged liquid of a hydrolyzer due to overpressure protection is introduced into an absorption tank, available components such as ammonia gas and a urea solution in the exhausted gas and discharged liquid are effectively absorbed and cooled through an automatic spraying pipe system and are collected in the absorption tank, and therefore, secondary pollution caused by the fact that the exhausted gas and discharged liquid enter a waste water pool or a factory chemical water pool is avoided, and meanwhile the utilization rateof a urea hydrolysis ammonia production system for raw materials is increased. And a new technical scheme is provided for energy conservation and environmental protection of the urea hydrolysis ammonia production system.

Description

technical field [0001] The invention belongs to the field of urea hydrolysis ammonia production system in a flue gas denitrification system, and in particular relates to a gas-liquid recovery system of a urea hydrolysis reactor. Background technique [0002] In view of the pollution caused by nitrogen oxides (NOx) to the atmosphere during the tail gas emission process of coal-fired power plant boilers, relevant national departments have issued strict limits on nitrogen oxide emission indicators. The flue gas denitrification technology that uses ammonia (NH3) as a reducing agent to reduce the concentration of nitrogen oxides in boiler exhaust flue gas has been fully promoted and applied. [0003] In the early flue gas denitrification system, the process scheme of preparing the reducing agent (ammonia gas) with liquid ammonia or ammonia water was mostly used, but related projects have extremely strict approval and supervision processes, and the storage equipment of liquid ammo...

Claims

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Application Information

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IPC IPC(8): C01C1/08B01D53/18
CPCC01C1/086B01D53/18B01D53/185B01D53/1412B01D53/1418B01D2252/103B01D2257/406
Inventor 李明皓王晓冰白永岗鲁晓宇潘栋尚桐罗志
Owner XIAN THERMAL POWER RES INST CO LTD