Energy-saving blowdown device for industrial boilers

A sewage device, industrial boiler technology, applied in the direction of boiler cleaning device, etc., can solve the problems of water and energy waste, water loss, heat energy loss, etc., to avoid the waste of water and heat energy, solve the waste of drainage, reduce the sewage discharge rate and The effect of hydration

Active Publication Date: 2013-04-24
QINGDAO JIENENG ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blowdown rate of power plant boilers is 0.3-1%, and the blowdown rate of general industrial boilers is 3-10%, so there will be a lot of water loss, and more importantly, the heat loss of water with heat energy. The value of lost heat energy is water 30-50 times of its own value, resulting in a great waste of water and energy, which has always been a major problem in the production of industrial boilers for water saving and energy saving

Method used

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  • Energy-saving blowdown device for industrial boilers
  • Energy-saving blowdown device for industrial boilers
  • Energy-saving blowdown device for industrial boilers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1 as figure 1 Said, an industrial boiler energy-saving blowdown device, comprising a housing 2, a turbine device, a steam-water mixer 9, and a screw conveyor 11; the steam-water mixer 9 is installed outside the housing 2 and connected to the side of the housing; the screw conveyor 11 is installed under the casing 2; the turbine device is arranged in the casing, including the steam turbine blade 4 and the reducer 6, and the steam nozzle 1 is installed above the steam turbine blade 4; the rotating shaft of the steam turbine blade 4 passes through the magnetic coupling 5 is connected to the reducer 6, the lower part of the reducer 6 is connected to the scraper drive shaft 7; the scraper support 8 is installed on the scraper drive shaft 7, the outer end of the scraper support 8 is connected to the scraper 10, and the scraper 10 is close to the shell 2 The inner wall; the rotating shaft of the screw conveyor 11 is connected to the scraper drive shaft 7 through a tran...

Embodiment 2

[0016] Example 2 The industrial boiler energy-saving sewage discharge device of the present invention is used to perform sewage treatment on the DZL4-1.25-4 steam boiler of Qingdao Jiarun Chemical Co., Ltd., and it has been operated for 6 months. The before and after effects are compared as follows:

[0017] Table 1 Comparison of the use effect between the industrial boiler energy-saving sewage discharge device of the present invention and existing equipment

[0018]

[0019] Conclusions: 1. The boiler water quality has improved rapidly, the steam production of the boiler has increased from 3.1 tons per hour to 3.8 tons, and the heat transfer effect has been significantly improved; 2. The amount of sewage has been reduced, resulting in a significant reduction in water replenishment, and the water saving rate has increased by more than 98%. .

Embodiment 3

[0020] Example 3 The comparison of the effect of sewage treatment on the alkali recovery boiler WGZ1.27--26 of Shandong Bohui Company using the industrial boiler energy-saving sewage discharge device of the present invention is as follows:

[0021] Table 2 The use effect comparison between the industrial boiler energy-saving sewage discharge device of the present invention and existing equipment

[0022]

[0023] Conclusions: 1. The original boiler water was turbid, and white suspended matter was clearly observed visually. After using this equipment, the water quality was quickly clarified, and all indicators were reduced and improved, ensuring the safe operation of the boiler. The steam production rate was changed from the original 17 tons / hour, increased to 21 tons / hour, significantly improving heat exchange efficiency; 2. Reduced sewage discharge, reduced water replenishment, and a water saving rate of over 99%.

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Abstract

The invention relates to an energy-saving blowdown device for industrial boilers. The energy-saving blowdown device comprises a shell, a turbine device, a steam-water mixer and a screw conveyor, the steam-water mixer is mounted outside the shell and connected with the side face thereof, the screw conveyor is mounted below the shell, the turbine device is arranged in the shell and comprises turbine blades and a speed reducer, steam spray heads are mounted above the turbine blades, a rotating shaft for the turbine blades is connected with the speed reducer through a magnetic coupler, the lower portion of the speed reducer is connected with a scraper transmission shaft, a scraper support is mounted on the scraper transmission shaft, the outer end of the scraper support is connected with scrapers, and a rotary shaft of the screw conveyor is connected with the scraper transmission shaft through a transmission chain. The energy-saving blowdown device for the industrial boilers does not need external power sources and effectively solves the problems of drainage waste and heat loss of traditional boiler flash tanks; and blowdown ratio and water supplement quantity of the boilers are decreased, water and heat waste of traditional flash tank equipment is avoided, and remarkable energy saving and emission reduction benefits are brought to enterprises.

Description

technical field [0001] The invention relates to an energy-saving sewage discharge device for industrial boilers. Background technique [0002] Industrial boilers are the heart of industrial production. When a large amount of boiler water evaporates, impurities will precipitate and condense on the liquid surface of the drum. In order to prevent a large amount of dirt from scaling on the inner wall of the boiler and the drum, the water on the surface of the drum must be continuously Discharge, this is the continuous row system of the boiler. The traditional continuous row boiler water is flashed through the expansion vessel of the boiler, and the secondary steam is used in the thermal deaerator, and a large amount of condensed water is discharged. The blowdown rate of power plant boilers is 0.3-1%, and the blowdown rate of general industrial boilers is 3-10%, so there will be a lot of water loss, and more importantly, the heat loss of water with heat energy. The value of lost ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/54
Inventor 金保全金宏
Owner QINGDAO JIENENG ENVIRONMENTAL PROTECTION CO LTD
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