CN201880472U

CN201880472U - Flue gas desulfurizing and dedusting device for industrial coal-fired boiler

Info

Publication number: CN201880472U
Application number: CN2010206443763U
Authority: CN
Inventors: 张步芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-06
Filing date: 2010-12-06
Publication date: 2011-06-29
Anticipated expiration: 2020-12-06

Abstract

The utility model discloses a flue gas desulfurizing and dedusting device for an industrial coal-fired boiler, which is used for completing the procedures of chemical spraying for desulfuration, liquid adsorption, dedusting with a cyclone Venturi tube, water bath for gas-liquid separation, purification with clear water, and automatic deslagging. The flue gas desulfurization and dedusting device is a round or square cylindrical closed body and is divided into a desulfurization chamber and a dedusting chamber by an upper clapboard and a lower clapboard inside the device, the top of the flue gas desulfurization and dedusting device is provided with a fume outlet, and the bottom of the flue gas desulfurization and dedusting device is communicated with a settling pond which is internally provided with a slag scraping machine; and the flue gas desulfurization and dedusting device is provided with a liquid level switch, a solenoid valve, an alkali liquor pond, the settling pond and a filtering pond, alkali can be automatically added, clear water and an alkali liquor can be recycled, and thus, the dual circulation of grey water and the alkali liquor is realized and an emission standard is reached.

Description

A kind of industry coal-boiler desulfurating dust removing device for flue gas

Technical field

The utility model relates to a kind of purifier of industry coal-boiler flue gas, relates in particular to adopt a kind of industry coal-boiler desulfurating dust removing device for flue gas of liquid as separating adsorbent.

Background technology

Sulfur dioxide in the waste gas that fire coal/heavy oil boiler produced, nitrogen oxide and dust etc. cause serious pollution to environment, it is one of emphasis of environmental improvement always, also be that sulfur dioxide in the difficult problem, particularly waste gas in the environmental improvement and nitrogen oxide are the major pollutants that are difficult to control.The many medium and small enterprise that China starts the nineties in 20th century, for example textile printing and dyeing enterprises etc. uses oil burning boiler aborning in a large number.The flue dust that oil burning boiler produces in process of production, sulfur dioxide and nitrogen oxide cause environmental pollution to the surrounding area, according to environmental requirement, must administer the equipment flue gas that particularly oil burning boiler produced that pollutes.

Summary of the invention

The purpose of this utility model is at industry coal-boiler fume emission problem, and a kind of desulfurization and dedusting effect industry coal-boiler desulfurating dust removing device for flue gas preferably is provided.Be provided with into mouth, body, dirt pocket, upper spacer, alkali lye sprayer, working hole, desulfurization chamber, water liquid sprayer, clean room, demister, outlet flue, water inlet, alkali lye import, whirlwind Venturi, liquid outlet, magnetic valve, liquid-level switch, add drug bucket, alkali lye pond, agitator, the 1st solution pump, liquid-level switch, the 2nd solution pump, filtering ponds, filter, sedimentation basin, Slag Scraping Device, transfer car(buggy), poly-ash bucket and following shelf etc.The present invention is a circular or square tubular obturator, and the top sets out mouth, and the bottom is communicated with sedimentation basin; Be divided into desulfurization chamber, dirt pocket by upper spacer and lower clapboard in the body; Whirlwind Venturi upper end connects dividing plate, and termination lower clapboard under the whirlwind Venturi, alkali lye sprayer are loaded on whirlwind Venturi top, and demister is established in the outlet flue below; Poly-ash bucket is aimed in whirlwind Venturi lower end outlet, and the Slag Scraping Device of being located in the sedimentation basin is aimed in poly-ash bucket outlet, and sedimentation basin and filtering ponds are separated by filter, and the interior solution of filtering ponds is connected to the alkali lye import of desulfurization chamber through the 2nd solution pump, magnetic valve, advances the alkali lye sprayer; Solution is connected to the alkali lye import of desulfurization chamber by the 1st solution pump through magnetic valve in the alkali lye pond, advances the alkali lye sprayer; The alkali lye pond is established agitator, liquid-level switch, is added drug bucket and battery valve; Solution flows into the alkali lye pond from liquid outlet through pipeline in the dirt pocket, adds between drug bucket and the alkali lye pond and establishes battery valve.

Flue gas enters dust cleaning case from advancing mouth, under the blast effect, promotes the rotation of whirlwind Venturi, after flue gas enters the whirlwind Venturi, under its venturi action, produces dirt dirt and falls, and dust granule enters poly-ash bucket by whirlwind Venturi lower end, drops down onto Slag Scraping Device in the sedimentation basin; And flue gas is directed to desulfurization chamber from whirlwind Venturi upper end; Flue gas is mixed at desulfurization chamber and alkali lye spraying, produces desulfurized effect, and flue gas obtains further water washing cleaning from desulfurization chamber through demister and discharges from outlet flue.The alkali lye that enters desulfurization chamber through the alkali lye import is from alkali lye pond and filtering ponds, and dirt pocket bottom liquid outlet is connected with the alkali lye pond, and the solution that the rotation of whirlwind Venturi is taken out of is back to the alkali lye pond; Solution through poly-ash bucket inflow sedimentation basin is drawn to desulfurization chamber from filtering ponds through magnetic valve, alkali lye import, alkali lye sprayer by the 2nd solution pump; The alkali lye pond adds drug bucket and adds medicinal powder according to the pH value size of alkali lye by solenoid control.

The utility model adopts the desulfurization of spray medicine, liquid adsorption at the oil burning boiler flue gas, water-bath gas-liquid separation, whirlwind shaped Venturi dedusting, and clear water purifies, and slags tap automatically.Not only its discharging reaches environmental protection standard, and clear water and alkali lye all is recycled, and realizes buck, the two circulations of alkali lye.The whole dust-removal system operating cost is low, and has eliminated secondary pollution.

Description of drawings

Fig. 1 is the structure of the utility model embodiment and the annexation schematic diagram of corollary equipment thereof.

Fig. 2 is the K--K view of Fig. 1.

Fig. 3 is the structural representation of the utility model embodiment whirlwind Venturi.

The specific embodiment

Referring to Fig. 1～3, the utility model is provided with into mouth 1, body 2, dirt pocket 3, upper spacer 4, alkali lye sprayer 5, working hole 6,15, desulfurization chamber 7, water liquid sprayer 8, clean room 9, removes fog 10, outlet flue 11, water inlet 12, alkali lye import 13, whirlwind Venturi 14, liquid outlet 16,

magnetic valve

17,18,20, liquid-level switch 19,25, adds drug bucket 21, alkali lye pond 22, agitator the 23, the 1st solution pump the 24, the 2nd solution pump 26, filtering ponds 27, filter 28, sedimentation basin 29, Slag Scraping Device 30, transfer car(buggy) 31, poly-ash bucket 32 and lower clapboard etc.

Flue gas enters dirt pocket 3 from advancing mouth 1, under the blast effect, the blade 144 that promotes whirlwind Venturi 14 makes it rotation, flue gas enters from the mouth 142 that advances of whirlwind Venturi 14, under its venturi action, dust granule enters poly-ash bucket 32 for 141 times by the ash discharging hole of whirlwind Venturi 14, falls into Slag Scraping Device 30, by transfer car(buggy) 31 outward transports; And flue gas causes desulfurization chamber 7 from the exhaust outlet 143 of whirlwind Venturi 14; Flue gas is mixed with the alkali mist of alkali lye sprayer 5 ejections at desulfurization chamber 7, produces desulfurized effect, and flue gas obtains further water washing cleaning and from outlet flue 11 dischargings from desulfurization chamber 7 through demister 10.The alkali lye that enters desulfurization chamber 7 through alkali lye import 13 is from alkali lye pond 22 and filtering ponds 27; Dirt pocket 7 bottom liquid outlets 16 are connected with alkali lye pond 22, and the solution that 14 rotations of whirlwind Venturi are taken out of is back to alkali lye pond 22; Flow into the solution of sedimentation basins 29 through poly-ash bucket 32, by the 2nd solution pump 26 from filtering ponds 27 through magnetic valve 17, alkali lye import 13, alkali lye sprayer 5 to desulfurization chamber 7; The alkali lye pond adds drug bucket 21 and adds medicinal powder according to the pH value size of alkali lye by magnetic valve 20 controls.Alkali lye, clear water are recycled.

After tested, the utility model embodiment can reach following major parameter.

The flue gas technical parameter:

1. smoke components: flue dust, SO ₂

2. flue-gas temperature: 130～250 ℃;

3. dust concentration: 1200～1500mg/Nm ³

Handle pollutant levels in the flue gas of back (by GB GB13271-2001):

1. smoke dust discharge concentration≤200～150mg/m ³

2. lingemann blackness: 1 grade;

3. sulfur dioxide emissioning concentration≤1200～900mg/m ³

Claims

1. industry coal-boiler desulfurating dust removing device for flue gas is characterized in that being provided with into mouth, body, dirt pocket, upper spacer, alkali lye sprayer, working hole, desulfurization chamber, water liquid sprayer, clean room, demister, outlet flue, water inlet, alkali lye import, whirlwind Venturi, liquid outlet, magnetic valve, liquid-level switch, adds drug bucket, alkali lye pond, agitator, the 1st solution pump, liquid-level switch, the 2nd solution pump, filtering ponds, filter, sedimentation basin, Slag Scraping Device, transfer car(buggy), poly-ash bucket and following shelf; Be divided into desulfurization chamber, dirt pocket by upper spacer and lower clapboard in the body; Whirlwind Venturi upper end connects dividing plate, and termination lower clapboard under the whirlwind Venturi, alkali lye sprayer are loaded on whirlwind Venturi top, and demister is established in the outlet flue below; Poly-ash bucket is aimed in the outlet of whirlwind Venturi lower end, and poly-ash bucket aligned beneath is located at the Slag Scraping Device in the sedimentation basin; Sedimentation basin and filtering ponds are separated by filter, and solution is connected to the alkali lye import of desulfurization chamber through the 2nd solution pump, magnetic valve in the filtering ponds, advances the alkali lye sprayer; Solution is connected to the alkali lye import of desulfurization chamber by the 1st solution pump through magnetic valve in the alkali lye pond, advances the alkali lye sprayer; The alkali lye pond is established agitator, liquid-level switch, is added drug bucket and battery valve; Solution flows into the alkali lye pond from liquid outlet through pipeline in the dirt pocket, adds between drug bucket and the alkali lye pond and establishes battery valve.

2. a kind of industry coal-boiler desulfurating dust removing device for flue gas as claimed in claim 1 is characterized in that the whirlwind Venturi is provided with ash discharging hole, exhaust outlet, advances mouth and blade.