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Deaerator dead steam recovery device and recovery process

A technology of exhaust steam recovery and deaerator, which is applied in combined devices, chemical instruments and methods, degassed water/sewage treatment, etc. It can solve problems such as low energy utilization rate, incomplete recovery of exhaust steam, and complicated recovery process. Achieve the effect of high energy utilization rate, complete waste steam recovery and simple recovery process

Active Publication Date: 2015-06-10
HENAN XINLIANXIN FERTILIZER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current various exhaust steam recovery technologies have the characteristics of incomplete exhaust steam recovery, low energy utilization rate, and complicated recovery process. Therefore, enterprises need a deaerator exhaust steam recovery process device system that can solve the above problems. getting stronger

Method used

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  • Deaerator dead steam recovery device and recovery process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A process for recovering exhaust gas from a deaerator, comprising the steps of:

[0027] 1. Close the exhaust and vent valve 15, open the first valve 14, the second valve 18 and the third valve 17, so that the temperature inside the deaerator 1 is 130°C and the pressure is: 0.1MPa~0.15MPa. The steam enters the interior of the hydrojet pump 2 through the tube side of the steam-water heat exchanger 6 and the air inlet on the upper part of the hydrojet pump 2; Air-laden steam is a mixture of steam and water;

[0028] 2. Make the steam-water mixture entering the hydraulic jet pump 2 in step 1 enter the steam-water separation chamber 19 of the double-layer exhaust steam absorber 3 through the outlet at the bottom of the hydraulic jet pump 2, and the liquid in the steam-water separation chamber 19 passes through the overflow compartment The top of the plate 12 enters the overflow water collection chamber 20, and the gas in the steam-water separation chamber 19 passes through t...

Embodiment 2

[0033] A process for recovering exhaust gas from a deaerator, comprising the steps of:

[0034] 1. Close the exhaust and vent valve 15, open the first valve 14, the second valve 18 and the third valve 17, so that the temperature inside the deaerator 1 is 140°C and the pressure is: 0.1MPa~0.15MPa. The steam enters the interior of the hydrojet pump 2 through the tube side of the steam-water heat exchanger 6 and the air inlet on the upper part of the hydrojet pump 2; Air-laden steam is a mixture of steam and water;

[0035] 2. Make the steam-water mixture entering the hydraulic jet pump 2 in step 1 enter the steam-water separation chamber 19 of the double-layer exhaust steam absorber 3 through the outlet at the bottom of the hydraulic jet pump 2, and the liquid in the steam-water separation chamber 19 passes through the overflow compartment The top of the plate 12 enters the overflow water collection chamber 20, and the gas in the steam-water separation chamber 19 passes through...

Embodiment 3

[0040] A process for recovering exhaust gas from a deaerator, comprising the steps of:

[0041] 1. Close the exhaust and vent valve 15, open the first valve 14, the second valve 18 and the third valve 17, so that the temperature inside the deaerator 1 is 150°C and the pressure is: 0.1MPa~0.15MPa. The steam enters the interior of the hydrojet pump 2 through the tube side of the steam-water heat exchanger 6 and the air inlet on the upper part of the hydrojet pump 2; Air-laden steam is a mixture of steam and water;

[0042] 2. Make the steam-water mixture entering the hydraulic jet pump 2 in step 1 enter the steam-water separation chamber 19 of the double-layer exhaust steam absorber 3 through the outlet at the bottom of the hydraulic jet pump 2, and the liquid in the steam-water separation chamber 19 passes through the overflow compartment The top of the plate 12 enters the overflow water collection chamber 20, and the gas in the steam-water separation chamber 19 passes through...

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Abstract

The invention belongs to a deaerator dead steam recovery device and a recovery process. The device comprises a deaerator and an exhaust emptying valve, wherein the exhaust emptying valve is arranged on an emptying pipe at the top of the deaerator; a tee joint is arranged on a pipe between the deaerator and the exhaust emptying valve; a third end of the tee joint is connected with an gas inlet at the upper part of a hydraulic jet pump through the tube side of a steam-water heat exchanger; an outlet at the bottom of the hydraulic jet pump is connected with an inlet at the lower part of a double-layer dead steam absorber through a pipe; an incondensable gas discharge pipe is arranged at the top of the double-layer dead steam absorber; a wire-mesh water collector, a cold desalted water nozzle, a mass and heat transfer chamber and a partition board are arranged successively from top to bottom inside the double-layer dead steam absorber; the cold desalted water nozzle is connected with a cold desalted water trough; the partition board is provided with a rising gas cap in the middle; a cavity in the lower part of the partition board inside the double-layer dead steam absorber is divided longitudinally by an overflow partition board into a steam-water separation chamber and an overflow water collection chamber. The deaerator dead steam recovery device and the recovery process have the advantages that the operation and recovery process is simple, dead steam recovery is complete, and the energy utilization rate is high.

Description

technical field [0001] The invention belongs to the technical field of a deaerator exhaust exhaust steam recovery device, and in particular relates to a deaerator exhaust exhaust recovery device and a recovery process. Background technique [0002] At present, in thermal power plants and other enterprises with self-built boiler devices, thermal deaeration is generally adopted for boiler feed water, that is, steam is passed into the deaerator filled with boiler feed water at a certain temperature, and the boiler feed water in the deaerator is heated. , making the temperature close to the saturation temperature. Using Henry's law, the oxygen dissolved in the water is discharged into the upper space of the deaerator, and then the oxygen-containing steam in the deaerator is discharged into the atmosphere through the exhaust valve. To achieve the purpose of oxygen removal. However, the oxygen-containing steam discharged into the atmosphere not only has high heat, but also cause...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/20B01D50/00
Inventor 顾朝晖宋仁委王洪营杨安成徐严伟曹真真
Owner HENAN XINLIANXIN FERTILIZER
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