CN2226486Y

CN2226486Y - Industrial smoke seawater washer

Info

Publication number: CN2226486Y
Application number: CN 95223409
Authority: CN
Inventors: 彭斯干; 杜义平
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-11
Filing date: 1995-10-11
Publication date: 1996-05-08
Anticipated expiration: 2005-10-11

Abstract

The utility model relates to an industrial smoke seawater washer apparatus, belonging to the technical field of flue gas cleaning for environmental protection. The utility model is characterized in that a washing tower is provided with two or more washing tower cavities; each of the washing tower cavities is provided with a respective tower body or a common tower body; paths for the circulation of flue gas are arranged between the tower cavities. The utility model solves the problem of eliminating the remained heavy metal and mercury waste in seawater washing in the existing method, and thoroughly removes harmful matter in the flue gas. The utility model has the advantages of low cost and low operation cost.

Description

Industrial smoke seawer washing device

The utility model relates to industrial smoke seawer washing device; the environmental protection technical field that belongs to industrial flue gas cleaning; be applicable to the seawater elution method and remove fire coal, fuel oil industrial furnace kiln flue gas nuisance occasion, be specially adapted to the gas cleaning of Coastal Power Station boiler.

Existingly remove SO in the flue gas that industrial burning device discharges ₂Application wider the seawater elution method arranged.This method cleaning solution is not limestone slurry or lime white, but seawater.Be the used cooled with seawater water reuse of power plant, promptly directly remove SO in the flue gas by a scrubbing tower ₂And CO ₂Deng pernicious gas.Its advantage is compared with lime white or limestone slurry elution process, and its advantage is: 1, and when being used for power plant, intake equipment separately; 2, cost is low especially; 3, need not lime stone or lime pulverizing device and waste scavenging equipment and stockyard; 4, operating cost is extremely low.Have data to show, the seawater elution process is compared with limestone slurry and lime white elution method, and its cost and operating cost are its some/one.Because the advantage that the seawater elution process is outstanding, existing in the world at present covering device more than 20 is put into commercial operation.But existing seawater elution process exists following great shortcoming: 1, and there is 1% ash to carry in the fire coal and enters the marine site after heavy metal is washed; 2, the mercury vapour in the fire coal enters the marine site after also being washed.These heavy metal substances will cause additional the pollution to seawater.Particularly the mercury vapour in the flue gas is general dry collector, comprise that electrostatic precipitator commonly used does not rise it to inhale the clothes collecting action, thereby the mercury vapour in the flue gas enters in the wash-out tower of existing seawater wash-out flue gas naturally and enters marine through wash-out.In view of the pollution of mercury easy-clear not, produce cumulative effect in vivo, mercury becomes the material that is subjected to strict control the most noticeable in the environmental protection.Because there is above-mentioned critical defect in the method for pernicious gas such as SO2 in the above-mentioned existing seawater wash-out flue gas, therefore is difficult to be applied.

The purpose of this utility model is: the used wash mill of industrial smoke seawater elution process that provides two sections of a kind of branches to carry out makes SO in the seawater wash-out flue gas ₂Do not contain heavy metal substance and mercury Deng the seawer washing liquid of discharging behind the pernicious gas, thereby additional the pollution do not caused in the marine site, and keeping the advantage of existing seawater wash-out flue gas process method, and make this method can obtain promoting, using.

Industrial smoke seawer washing device of the present utility model is achieved in that it includes scrubbing tower, and this tower has into exhaust gases passes and smoke discharging passage, and apocenosis passage and cleaning solution import; Scrubbing tower has two or more scrubbing towers chamber, and each scrubbing tower chamber has tower body separately, or total tower body; Passage for the flue gas circulation is arranged between the tower chamber.

This device is a significant improvement to existing seawater elution process wash mill, and the program of finishing the wash-out heavy metal is exactly to pollute in order further to reduce.When dividing two stages to carry out the wash-out flue gas, wherein when phase I wash-out heavy metal and mercury vapour then the flue gas heat taken away of cleaning solution no longer send saline waters to, second stage wash-out SO ₂The temperature rise of seawer washing liquid minimum, therefore can save cooling system, reduce the cost of system significantly, and improved the reliability of system, reduce maintenance cost.

The advantage of device of the present utility model is, at the SO that removes effectively in the industrial smoke ₂With other pernicious gases whiles, can also remove heavy metal and mercury, make emission not cause additional the pollution.The whole system cost is low simultaneously, and running cost is low, is convenient to operation, safeguards.

Accompanying drawing of the present utility model and description of drawings are as follows:

Fig. 1 scrubbing tower is the structural representation of independent apportion tower body.

Fig. 2 scrubbing tower is a conjuncted housing structure schematic diagram arranged side by side.

Fig. 3 scrubbing tower is a conjuncted housing structure schematic diagram up and down.

Among the figure: 1, the phase I tower body, 2, the smoke inlet after the dedusting, 3, blow-off pipe, 4, exhaust gases passes, 5, the second stage scrubbing tower, 6, the cleaning solution discharge pipe, 7, the cleaning solution spray head, 8, demister, 9, collecting tank, 10, purify flue gas discharge opening, 11, the cleaning solution inlet.

In conjunction with the accompanying drawings and embodiments the utility model is further specified as follows:

Fig. 1 is the embodiment of independent apportion tower body, and the flue gas after dedusting is delivered in the phase I scrubbing tower (1) by air-introduced machine and smoke inlet (2), and cleaning solution entrance (11) is arranged at this tower top, and blow-off pipe (3) is arranged at the bottom, and waste liquid drains in the liquid waste treating apparatus.This device can be formed blowdown treatment plant.Common wash-out heavy metal of flue gas or mercury vapour by the phase I washing also can be washed down simultaneously.After the phase I, flue gas enters second stage scrubbing tower (5) by passage (4).This tower one end is cleaning solution inlet port (11), and the utility model cleaning solution is a seawater, power plant's cooling circulating water normally, and there is cleaning solution discharge pipe (6) lower end, and the cleaning solution that carries refuse is delivered to the quality recovery device.When phase I wash-out heavy metal and mercury vapour, then this quality recovery device is an oxidation treatment device, is used to handle the second stage scrubbing tower and washs the SO that gets off ₂Deng pernicious gas.This quality recovery device can be built in the treatment plant with the liquid waste treating apparatus of phase I.The waste liquid that treated device is handled can be directly in marine site or the natural environment.Second stage scrubbing tower wash-out the flue gas of nuisance enter fume extractor through exhaust gases passes (10), this installs normally chimney.

Fig. 2 is that scrubbing tower (2) and (5) are the conjuncted tower body of left and right sides apportion, promptly has a common tower body, and the scrubbing tower in two independent tower chambeies is arranged, and two tower chambeies are mutually by wallboard passage (4) UNICOM, and its benefit is a compact conformation, takes up an area of for a short time, and equipment investment is little.

Three scrubbing towers also can be realized the purpose of this utility model side by side.The tower that is about to the phase I is divided into two towers, promptly handles heavy metal substance and mercury vapour and can carry out respectively.

Fig. 3 has two embodiment of conjuncted tower body up and down, and the tower chamber is by passage (4) UNICOM, and the bottom of last tower is the top of following tower.

The utility model has the advantage of SO in removing flue gas₂Pernicious gas is removed simultaneously Heavy metal and mercury vapour make the seawater of washing agent after elution process is finished, and make quality recovery just Normal state and enter the marine site can be applied the seawer washing method, save great amount of investment and The purifying smoke effect that obtains.

Claims

1, a kind of industrial smoke seawer washing device, it includes scrubbing tower, and this tower has into exhaust gases passes, cleaning solution import and smoke discharging passage and apocenosis passage; It is characterized in that scrubbing tower has two or more scrubbing towers chamber, each scrubbing tower chamber has tower body or total tower body separately; Passage for the flue gas circulation is arranged between the tower chamber.

2, device according to claim 1 is characterized in that, has the wash mill of separate wash tower body arranged side by side, and the UNICOM in its scrubbing tower chamber is by passage UNICOM, and this passage can be a pipe.

3, device according to claim 1 is characterized in that, has the wash mill of common washing tower body, and tower body is erect side by side, and tower chamber UNICOM is by the through hole UNICOM between total wallboard.

4, device according to claim 1 is characterized in that, has the wash mill of common washing tower body, and tower body is arranged side by side up and down, and the bottom of last tower is the top of following tower, and the UNICOM between the tower chamber is by pipeline UNICOM up and down.