CN2222891Y

CN2222891Y - Flue gas purifying energy saver

Info

Publication number: CN2222891Y
Application number: CN 95201022
Authority: CN
Inventors: 陈启松
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-15
Filing date: 1995-01-15
Publication date: 1996-03-20
Anticipated expiration: 2005-01-15

Abstract

A flue gas purifying energy saver comprises a flue gas box 7, a semi baffle plate 10 and a gas-gas heat transferring element 11 arranged on the upper part of the flue gas box, a gas inlet pipe 8 arranged on the upper left part of the flue gas box, a gas outlet pipe 9 arranged on upper right part of the flue gas box, a gas-solid separating element 12 arranged on the left lower part of the flue gas box, a flue-dust retainer 13 on lower part of the flue gas box; the left side of the flue gas box is also provided with a water container 3, a full baffle plate 6 and a water-gas heat transferring element 4 are arranged between the water container and the flue gas box, and the water container is also provided with a water inlet pipe 2, a water outlet pipe 5 and a drainage pipe 1. The utility model has advantages of good effect of flue gas prevention and dust control, and obvious energy saving, etc; therefore, the utility model has great popularization and application value in the flue gas purifying and waste heat recovery in industry.

Description

The gas cleaning energy-saving appliance

The utility model relates to the device of separating solid particles and recovery waste heat from flue gas, specifically a kind of gas cleaning energy-saving appliance.

Smoke pollution comprises that it is one of main root of atmosphere pollution that thermal pollution, dust and soot pollute; Industrial Boiler, kiln, smelting furnace etc. all will form smoke pollution.In order to solve dust pollution, can adopt various dedusters.But dry method dust exists two big problems; At first be the thermal pollution problem, in order to prevent to stop up and etching problem, dry method dust must guarantee that the exhaust temperature of flue gas discharges when being higher than its dew-point temperature, generally about 170 ℃; Next is a not smoke abatement of dedusting, soot (0.02～0.05 μ m) can't be removed.Thermal pollution is not eliminated in wet dedusting in essence, but also can bring secondary pollution.

If can develop a kind of device, but both smoke abatement and dust control can utilize the waste heat of flue gas again, turns waste into wealth; Simultaneously, can not produce secondary pollution again; Such device (might as well be defined as: the gas cleaning energy-saving appliance) be that domestic and international expert's power of the same trade is pursued, but the technological difficulties of not capturing as yet so far.

The purpose of this utility model is: a kind of gas cleaning energy-saving appliance is provided, and it has smoke abatement and dust control ability and waste heat recovery ability concurrently, and does not have secondary pollution.Can overcome the deficiency of prior art.

The technical solution of the utility model is: flue gas is earlier gone into the aqueous vapor heat exchanger through a side precooling of gas-gas heat exchanger is laggard, is chilled to by force below the dew point, and the waste heat water that is cooled reclaims; This moment, dust clipped water smoke with the smokeshade coacervating large particle, and by the gas solid separation dedusting, dust is fallen into ash bucket, and peace and quiet gas is heated the back discharge that heats up from the opposite side of gas-gas heat exchanger.

Below in conjunction with accompanying drawing,, provide details of the present utility model by description to embodiment.

Accompanying drawing 1 is the utility model structural representation.Among the figure:

1, blow-off pipe 2, water inlet pipe 3, water tank

4, aqueous vapor heat exchange element 5, outlet pipe 6, whole baffle

7, smoke box 8, air inlet pipe 9, blast pipe

10, semiclapboard 11, air-air heat exchange element 12, gas solid separation element

13, flue-dust retainer

As shown in Figure 1: a kind of gas cleaning energy-saving appliance; Feature of the present utility model is: it comprises that smoke box 7, the smoke box first half are equipped with semiclapboard 10 and air-air heat exchange element 11, the smoke box upper left quarter has air inlet pipe 8, the smoke box upper right quarter has blast pipe 9, and the smoke box lower left quarter has gas solid separation element 12, and flue-dust retainer 13 also is equipped with in its lower end; Also have water tank 3 in the left side of smoke box, whole baffle 6 and aqueous vapor heat exchange element 4 are arranged between water tank and the smoke box, water inlet pipe 2, outlet pipe 5 and blow-off pipe 1 also are housed on the water tank.To being entered in the smoke box 7 by steam inlet pipe 8, back by precooling by the air-air heat exchange element 11 in semiclapboard 10 left sides, the aqueous vapor heat exchange element semi-finals by whole baffle 6 right sides is chilled to below the dew point flue gas then along a; At this moment, flue dust begins the coacervating large particle dust under the effect of water smoke, and by after 12 separation of gas solid separation element, the dust and the globule drop to flue-dust retainer 13, the air-air heat exchange element 11 that saturated peace and quiet air enters semiclapboard 10 right sides is added intensification, surpasses behind the dew point from blast pipe 9 along b to discharge; Cooling water along c in water inlet pipe 2 enters water tank 3, after the aqueous vapor heat exchange element 4 by whole baffle 6 left sides is heated, by outlet pipe 5 along d to sending hot water; Sewer by the blow-off pipe 1 that is contained in water tank 3 bottoms along e to discharging; Thereby finish entire work process.

In order to prevent to stop up and corrosion, in whole exhaust gases passes, all can serve as a contrast antiseized and resistant material, as enamel, ptfe plastic etc.

According to different flue gas conditions, the utility model can be made into all size series of products.

The utility model is compared with background technology, and the beneficial effect that has is:

1, smoke medicining dust-removing effect is good. Owing to utilized flue dust in humid air, can play cohesion Act on this principle, the utility model can not only be removed the dust more than 95%, and Can remove the soot more than 80%.

2, energy-conservation obvious. The utility model is used for Industrial Boiler, generally can save energy 5～8%, be used for the high-temperature flue gas better effects if.

In addition, the utility model can also reduce the air-introduced machine load, prolongs the air-introduced machine life-span; And there are not plurality of advantages such as secondary pollution.

Therefore, the utility model has great application value in industrial flue gas cleaning and waste heat recovery.

Claims

1, a kind of gas cleaning energy-saving appliance; Feature of the present utility model is: it comprises that smoke box, the smoke box first half are equipped with semiclapboard and air-air heat exchange element, and the smoke box upper left quarter has air inlet pipe, and the smoke box upper right quarter has blast pipe, and the smoke box lower left quarter has the gas solid separation element, and flue-dust retainer also is equipped with in its lower end; Left side at smoke box also has water tank, and whole baffle and aqueous vapor heat exchange element are arranged between water tank and the smoke box, and water inlet pipe, outlet pipe and blow-off pipe also are housed on the water tank.

2, gas cleaning energy-saving appliance as claimed in claim 1, it is special seized with terrorly to be: all can serve as a contrast antiseized, resistant material in whole exhaust gases passes, as enamel, ptfe plastic.