CN2545487Y - Waste incinerator with double-layer steel sheet hollow wall structure - Google Patents

Abstract

A waste combustion furnace with a double-layer hollow steel wall is characterized in that a furnace cavity adopts the structure of an internal shell and an external shell made of steel plates; a hollow wall is arranged between the two steel plate shells of a combustion chamber in the furnace cavity; the shell of the furnace cavity is coated with a fire insulation material layer; the circumference of a combustion chamber is also provided with a combustion supporting device made of high-pressure blowing pipes; a second-combustion chamber for water cooling is also arranged between the furnace and a first dust collector. Compared with the prior technology, the utility model adopts the blowing combustion supporting instead of the oil-ejection combustion supporting and steel wall hollow furnace coated with a fire insulation material layer instead of firebrick furnace, thus not only simplifying the structure but also reducing the production cost and the operation cost, so that the waste in combustion can be recycled while producing heat. The utility model is suitable to the full combustion of low-heat living waste at the discharging standard, thus achieving the aim of the reclaimation, the recycle and the reduction of waste combustion.

Description

The incinerator of double-layer plate cavity wall structure

Technical field: the utility model relates to a kind of environmental protection equipment of disposal of refuse, and particularly a kind of body of heater is the incinerator of (bilayer) steel plate cavity wall structure.

Background technology: along with expanding economy, industry and house refuse increase severely thereupon, and in order to change the environment that goes from bad to worse, each state all finishes the environmental protection equipment of developing various disposals of refuse mutually.To the mode of garbage disposal, mainly contain reason, compost and the three kinds of modes of burning of filling out at present.The processing mode of landfill and compost, though technology is simple, small investment, convenient management exists and takes up an area of greatly, the addressing difficulty, the secondary pollution at soil and water source is serious.The method of burning disposal rubbish, though the vent gas treatment technical difficulty is big, but the minimizing of rubbish and innoxious effective, so utilize the proportion of this method disposal of refuse to increase day by day, but existing incinerator is because its burner hearth (Burning Room) adopts the refractory brick material to build system, chamber structure complexity, the volume heaviness, usually can't handle the house refuse of pure low thermal mass, will adopt the combustion-supporting method of oil spout just can make the house refuse of low thermal mass reach abundant burning usually, make the operating cost height.Because the oil jetting combustion temperature drift, not only make oxynitrides content height in the waste gas of discharge, the heavy metal floating dust content of effumability is big, easily causes auxiliary air to pollute.Burner hearth is also easily ablated because of high temperature in addition, influences its service life.

The purpose of this utility model provides a kind of incinerator of improved double-layer plate cavity wall structure, make and have small investment, floor space is little, can handle the house refuse of pure low thermal mass, minimizing, innoxious, resource is effective and waste heat can also be recycled.

The utility model is realized with following technical scheme, it still comprises body of heater, burner hearth (combustion chamber), charging aperture (being provided with feeding mechanism), dust arrester, chimney, air-introduced machine, air blast, water tank, composition such as inlet and outlet pipe lines and electrical control cubicles, it is characterized in that burner hearth of the furnace body is a structure of being made inside and outside two layers of walls shell by steel plate, between the two-layered steel plates wall shell that constitutes fire box, be formed with a stifled cavity wall, on the hearth wall shell, be coated with the flame-proof thermal insulation material coating, fire box around also be laid with the auxiliary combustion equipment that constitutes by the high pressure blast pipe, between body of heater and first order dust arrester, also add have water-cooled cooling secondary combustion chamber to help the abundant combustion decomposition of organic compounds.

The operation principle process of this refuse incinerator is as follows: combustible component in the rubbish and airborne oxygen carry out violent reaction, through burning, bacterium in the rubbish is utterly destroyed, organic matter is thoroughly decomposed, constantly provide the combustion-supporting oxygen of using by air blast to high pressure blast pipe device, utilize the hot environment (playing the air preheater effect) in the cavity wall that air is carried out preheating, thereby allow the high pressure draught of ejection in burner hearth, form and carry out violent reaction, through burning, bacterium in the rubbish is utterly destroyed, organic matter is thoroughly decomposed, constantly provide the combustion-supporting oxygen of using by air blast to high pressure blast pipe device, utilize the hot environment (playing the air preheater effect) in the cavity wall that air is carried out preheating, help that rubbish fully burns in the stove thereby allow the high pressure draught that sprays in burner hearth, form the high temperature and high speed turbulent flow.Gas fume after burning enters water-cooled chimney body (or entering secondary combustion chamber) and tentatively lowers the temperature, after enter dust arrester (cyclone dust collectors) again and carry out the thick dedusting of the first order, flue gas is entered by the cyclone dust collectors central tube again and utilizes heat exchange to reduce flue-gas temperature in the heat exchanger afterwards, and recovery waste heat, make flue-gas temperature be quenched to about 150 ℃, after enter sack cleaner again, under the induced draft blower withdraws effect, enter atmosphere through the remaining clean flue gas of multistage dedusting like this, and realize qualified discharge by chimney.By waste heat that heat exchanger absorbed hot-water supply to external world.In sum, compared with the prior art, the utility model adopts the combustion-supporting replacement oil spout of spray wind combustion-supporting, adopt the body of heater of steel plate cavity wall structure applying of refractory material coating, on manufacturing and designing, not only simplify the structure, reduced manufacturing cost and production run cost, make fire box can also provide the condition of high temperature of the best to be applicable to the burning of pure low thermal mass house refuse, the also recyclable utilization of heat energy that produces during waste incineration simultaneously reaches the waste incineration resource, the purpose of minimizing.

Below in conjunction with drawings and Examples concrete structure principle of the present utility model is described further.

Fig. 1 is the overall structure schematic diagram of the utility model incinerator.

Fig. 2 is the partial structurtes schematic diagram that is provided with spray wind auxiliary combustion equipment and double-layer plate cavity wall body of heater.

Fig. 3 is the burning operation workflow diagram (process chart) of this novel incinerator.

With reference to accompanying drawing, wherein: 1～body of heater, 2～charging aperture (being provided with feeding mechanism), 3～dust arrester (cyclone dust collectors), 4～frame, 5～secondary combustion chamber (or water cold smoke cylindrical shell), 6～heat exchanger, 7～water tank, 8～electrical control cubicles, 9～sack cleaner, 10～chimney, 11～air-introduced machine, 12～air blast, 13～loading hopper, 14～dust arrester ash hole, 15～air inlet, 16～air compartment, 17～cavity wall, the outer furnace wall of 18～body of heater, 19～air main, 20～blast pipe mouth, the internal protecting wall of 21～body of heater, 22～charging aperture passage, 23～burner hearth (combustion chamber), 24～alumina silicate coating, 25～refractory mortar coating, 26～preceding fire door, 27～ash hole, 28～heat exchanger inlet channel, 29～flue.

With reference to accompanying drawing as can be known, the utility model also has following technical characterictic when specific design is made:

One, described flame-proof thermal insulation material coating is by the alumina silicate coating 24 that is positioned at nexine (certain thickness) be positioned at outer field refractory mortar coating 25 and constitute.

Two, the high pressure blast pipe of described composition spray wind auxiliary combustion equipment is to be made of the air main 19 and the high pressure blast pipe mouth 20 that are distributed in the two-layered steel plates cavity wall.

Three, between described body of heater and the first order (whirlwind) dust arrester, also can set up a water-cooled chimney body and replace secondary combustion chamber, between dust arrester (cyclone dust collectors) and chimney, can be provided with the heat exchanger and the sack cleaner of favourable heat energy recycle in addition to help the abundant combustion decomposition and the cooling of organic compounds.

Four, the above-mentioned secondary combustion chamber or the internal face of water-cooled chimney body also can be coated with the coat composed refractory masses of alumina silicate coating and refractory mortar.

In addition, the utility model also can be considered to take mechanization to promote the design of charging automatically at the charging aperture place, to reduce labor intensity, adopts the warning device that is lower than water level, can avoid the safety problem of few water of heat exchanger or lack of water, prolong the life-span of sack cleaner and body of heater.

Claims (5)

1, a kind of incinerator of double-layer plate cavity wall structure, it comprises body of heater (1), burner hearth (23), charging aperture (22), dust arrester, chimney (10), air-introduced machine (11), air blast (12), water supply used water case (7), inlet and outlet pipe lines and electrical control cubicles (8) are formed, it is characterized in that burner hearth of the furnace body is a structure of being made inside and outside two layers of walls shell by steel plate, between the two-layered steel plates wall shell that constitutes fire box, be formed with a stifled cavity wall (17), on the hearth wall shell, be coated with the flame-proof thermal insulation material coating, around fire box, also be laid with the auxiliary combustion equipment that constitutes by the high pressure blast pipe, between body of heater and first order dust arrester, also be equipped with the secondary combustion chamber (5) of water-cooled cooling.

2, incinerator according to claim 1 is characterized in that described flame-proof thermal insulation material coating is by the certain thickness alumina silicate coating (24) that is positioned at nexine and is positioned at outer field refractory mortar coating (25) formation.

3, incinerator according to claim 1, it is characterized in that forming the high pressure blast pipe that sprays the wind auxiliary combustion equipment is to be made of the air main (19) and the high pressure blast pipe mouth (20) that are distributed in the two-layered steel plates cavity wall.

4, incinerator according to claim 1, it is characterized in that also can setting up between body of heater (1) and the first order dust arrester (3) a cool formula chimney body of water, in addition, also between dust arrester (3) and chimney (10), can be provided with heat exchanger (6) and sack cleaner (9).

5,, it is characterized in that also can being coated with refractory masses at the internal face of described secondary combustion chamber (5) or water-cooled chimney body according to claim 1 or 4 described incinerators.