CN1058086A

CN1058086A - Diving-type clarification system for flue gas

Info

Publication number: CN1058086A
Application number: CN 90103451
Authority: CN
Inventors: 陈俊德
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-09
Filing date: 1990-07-09
Publication date: 1992-01-22
Anticipated expiration: 2005-07-09
Also published as: CN1025365C

Abstract

A kind of purified gas system and device comprises: a combustion apparatus, one heat exchanger is in order to the flue gas of cooling row spontaneous combustion equipment, one air blast will be taken out the gas of automatic heat-exchanger and introduce a foaming dust separator that stays under water in a tank, its contained flue dust can " be struck off " by water when flue gas was left away by the separation foaming, and purifying exhaust air is promptly released so that prevent air pollution by the chimney row who is located on the tank.

Description

Diving-type clarification system for flue gas

The present invention relates to clarification system for flue gas.The flue gas that general spontaneous combustion equipment such as boiler or incinerator burning are discharged later directly enters in the atmosphere and will cause serious air pollution because of dust, flue dust, soot and other organic matters that is suspended in the gas.Waste gas after burning is as being introduced into an electrostatic precipitator, though the dust of being carried secretly in the waste gas can be removed by electrostatic precipitator, the higher meeting of its installation and maintaining cost increase company is the financial burden of medium-sized and small enterprises particularly.And the used heat of flue gas is not just introduced the equipment that also may damage deduster in the deduster except that wasting energy if be recovered.

This case inventor is invention the application's diving-type clarification system for flue gas in view of the shortcoming of habitual combustion apparatus.

The purpose of this invention is to provide a kind of clarification system, this system comprises: a combustion apparatus, the flue gas that one heat exchanger is discharged in order to cooling spontaneous combustion equipment, the gas that one air blast will be taken out in heat exchange is introduced a foaming dust separator that stays under water in a tank, its contained flue dust can " be struck off " by water institute when flue gas was left by separator, purified waste gas is released from the chimney row who is located on the tank again, thereby has prevented air pollution.

Brief description of drawings:

Fig. 1 is a system diagram of the present invention;

Fig. 2 is the front sectional elevation of heat exchanger of the present invention;

Fig. 3 is the side view of this heat exchanger;

Fig. 4 represents foaming dust separator of the present invention;

Fig. 5 is the side view of this foaming dust separator.

Consult each accompanying drawing, system of the present invention comprises: a combustion apparatus 1, as boiler, burner etc.; One cooling device, 2, one air blasts, 3, one foaming dust separating devices, 4, one purified gas blowdown stacks 5, and a flue dust collecting device 6.

The flue gas that spontaneous combustion equipment 1 is discharged is delivered to cooling device 2 by the main chimney 11 that contains valve 111 through shunt valve 12.But shut-off valve 111 when stack gas cleaning is handled.

Cooling device 2 comprises: the heat exchanger of cooling stack gas, and a cooling water source 22 cooling water supplies enter in the heat exchanger 21 through water inlet pipe 221 and valve 222, and one is positioned at the hopper 23 of interchanger 21 belows in order to store heat exchange current later.

Heat exchanger 21 shown in Fig. 1～3 comprises: a housing 211, limit a heat-exchanging chamber 215 by this housing, one is positioned at the preceding dividing plate 212 of air inlet 21a, one is positioned at the rear bulkhead 213 of gas outlet 21b, and many by heat-exchanging chamber 215 and between two dividing plates 212,213, and many by heat-exchanging chamber 215 and the interior pipe 214 between two dividing plates 212,213.Heat exchange is carried out in interior pipe 214 outsides that pipe 214 in flue gas F flows through, cooling water are then flowed through in the housing 211.Hopper 23 contains the bottom valve 231 that a warm water discharge pipe 232 and is located at bottom land, and the part current can be introduced pipe 221 with recirculation water through return duct 233, the first circulating pumps 234, as the usefulness of 21 cycle heat exchange in the heat exchange.

Air blast 3 has an air intake duct 31 to be connected with the gas outlet 21b of heat exchanger 21, and an escape pipe 32 link the foaming dust separator 4, this escape pipe 32 be immersed in the foaming separator 4 the water surface under.

Foaming dust separating device 4 comprises: a foaming tank 41, one foaming dust separators 42, are arranged on the emptying gas chimney that tank 41 tops are connected with exhaust outlet 43, and one connects the discharge pipe 45 of the overfall 44 of tank top.This foaming tank 41 is poured water to horizontal plane 40, so that flush with overfall 44.This foaming dust separator 42 stays under water under the water surface 40 of tank 41, and it comprises that the ducted body 421 of a sealing is connected with air blast 3, is Fig. 4, the cylinder type shown in 5 approximately; Many smoke exhaust holes 422 are established in ducted body 421 controls, and on the flange cover of its openend 424 blind plate 423 are arranged.Blind plate 423 is removable so that remove flue dust or the mud that is deposited in the ducted body 421.

Flue dust collecting device 6 comprises: an adjacency foaming tank 41 is positioned at the dust-precipitator 61 of separator discharge pipe 45 belows, one places the filter bag 62 in the dust-precipitator 61 to fly at the water surface in order to collection, the flue dust that goes out from overfall 44 overflows, carbon powder etc., one is located at dust-precipitator 61 bottoms and contains the delivery pipe 63 of valve 631, one stillpot 64 receives waste water that delivery pipes 63 discharge and surplus dirt and receives from 411 sludge discharged of sludge pipe that are located at tank 41 bottom band valves 412, and one second circulating pump 65 is used for clear water with stillpot 64 tops through pipe 651, valve 625 pumped back foaming tank 41.

When device of the present invention was operated, the hot flue gases of combustion apparatus 1 was blown in the foaming dust separator 42 by air blast 3 after the cools down of cooling device 2, and flue gas is overflowed by smoke exhaust holes 422 foaming.Flue dust such as the dust of being carried secretly in the gas, carbon powder, particulate are scraped by current when the gas vesicle leaves aperture 422, purified gas is discharged by the top chimney then, the lightweight flue dust is suspended on the water surface, be collected in the bag 62 by overfall 44 outflows, the heavy flue dust then is deposited on tank 41 bottoms, and mud is then removed away by bottom land.

Cooling water is after interchanger 21 heat exchange, warm water store in the groove 23 in case the preheating of raising water for boiler with or be made for the usefulness of other warm water source, cooling water also can be from the water source 22 continues spray and enters in the interchanger 21 heat exchange warm water later and then directly discharged by interior pipe 232 and use; Also can be by interchanger 21, groove 23, pump 234 circulate to cool off in the forced circulation mode and give discharge until reaching the uniform temperature rear.

The pure qi (oxygen) treating apparatus that the present invention is better than habitually practising be following some:

1. the flue gas of cooling off is struck off the flue dust of carrying secretly in the underwater in the bubbling mode, and installation cost is low, operates smooth and easyly, and the maintenance problem is few.

2. hot gas reclaims and sprinkles heat, energy savings earlier with cooling heat transferring.

Unlike water scrubber need add high-pressure hydraulic pump hydro-peening flue dust, and directly bubbling mode dedusting in water can be saved the electric energy that high-pressure pump consumes.

4. need not additionally to install metal screen, and directly with foaming mode dedusting in the water.

Claims

1, a kind of submersible type flue clarification system is characterized in that comprising:

The bypass duct of the autonomous chimney of flue gas that its burning of one combustion apparatus is given birth to flows through;

One cooling device connects this flue gas shunt valve in order to cool off this flue gas;

One air blast have an air intake duct be connected to this cooling device and

One escape pipe;

The escape pipe that one foaming dust separating device connects this air blast is to accept the pre-cool flue gas that it is carried, and it comprises

One is submerged in the undersurface foaming separator of a foaming tank, make flue gas from this separator bubbling with scrape in the degasification with flue dust;

One emptying gas chimney is released purified gas in order to row; And

One flue dust collecting device is in order to collect the dust of removing in gas, carbon powder or particulate, this foaming dust separator comprises a seal casinghousing, which is provided with many smoke exhaust holes, the sealing body connects the escape pipe of this air blast, gives vent to anger bubbling to scrape flue dust in the degasification by smoke exhaust holes.

2, pure qi (oxygen) system and device as claimed in claim 1, wherein, this foaming dust separator is a cylinder type, and its port of export flange is covered with a blind plate.

3, pure qi (oxygen) system and device as claimed in claim 1, wherein this cooling device comprises the heat exchanger of a refrigerating gas, in housing, be provided with the many interior pipes that are connected between combustion apparatus and the air blast, one cooling water source cooling water supply enters the flue gas of the shell ends of this heat exchanger with cool stream pipe in all, and a hopper is positioned at the cooling water of this heat exchanger below with the seasoning heat exchange.

4, purified gas system and device as claimed in claim 1, wherein, this flue dust collecting device comprises that a dust-precipitator is in abutting connection with this dust separating device that foams, contain a filter bag in order to receive, filtrating overflow is from the flue dust of this foaming tank overfall, and a stillpot is in order to accept the mud from foam tank and dust-precipitator.