CN105953229A

CN105953229A - Percolate treatment technique in household garbage heat treatment process

Info

Publication number: CN105953229A
Application number: CN201610281411.1A
Authority: CN
Inventors: 田原宇; 乔英云; 徐景芳; 田斌; 张金弘
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2016-09-21
Anticipated expiration: 2036-04-29
Also published as: CN105953229B

Abstract

The invention provides a percolate treatment technique in the household garbage heat treatment process. A percolate is sprayed into 500-1500 DEG C of high-temperature discharged furnace slag of household garbage heat treatment for evaporation and reaction, stink gas and low-density unburnt objects flow upwards into a household garbage heat treatment furnace, and cooling furnace slag flowing downwards is further subjected to oxidizing roasting and sorting by introducing air again. Relatively clean high-temperature furnace slag is discharged into a heat exchange stock bin, and low-temperature low-carbon-content odorless furnace slag is discharged out through the lower portion of the heat exchange stock bin regularly.

Description

House refuse heat treatment process percolate treating process

1. technical field

The present invention provides house refuse heat treatment process percolate treating process, belongs to field of environment protection.

2. background technology

The domestic rubbish disposal mode of countries in the world mainly has classification recovery, landfill, compost and burning, cracks and gasify at present.Landfill disposal A large amount of soil need to be taken.Meanwhile, in rubbish, oxious component will also result in severe contamination to air, soil and water source, not only breaks up ecological environment, Also serious harm health；Rubbish to be sorted, to classify by compost treatment, it is desirable to the organic content of rubbish is higher.And compost treatment is not Energy minimizing, still needs to take a large amount of soil.Burn, cracking and gasification process all can realize rapid volume reduction and thoroughly high temperature innoxious, account for Ground area is little, and can realize waste resources energy, is current and the main flow direction of future life garbage disposal.But these processes all can be at rubbish The big intractable percolate of rubbish storehouse cutting out partial stink, complicated component, COD, NH3-N concentration are the highest, and difficult biochemical substances content is many, Water quality and quantity changes greatly, is the generally acknowledged difficult problem of current water treatment field.Although after evaporation and concentration return incinerator combustion heat supplying again, 20% dense Contracting percolate just can maintain self evaporation and the thermal balance of burning, and handling process is simple, and investment and processing cost are low, but containing part in evaporation vapour Acidic volatile material, adds dual-spectrum process and cost, and additionally evaporation needs to consume the steam of Refuse Incineration Process 1%.The lowest one-tenth This cleaning processes the difficult problem that percolate is current house refuse heat treatment.

The essence burned is that organic waste is oxidized under conditions of high temperature and oxygen supply abundance gaseous inert gas thing and inorganic noncombustibles, to be formed Stable solid residue.First being placed in incinerator by rubbish and burn, discharge heat energy, then waste heat recovery can heat supply or generating；Flue gas Discharge after purification.But when the 10%-30% ash conversion contained in rubbish is to arrange outside a large amount of solid residue, contain the most again more unburning material, And high temperature enters in water seal and then slags tap, the most both waste solid residue heat energy, again can be because of the soluble substance dissolving generation difficult waste water of secondary in slag With hydration caking blocking.

House refuse cracking is technology the most newly developed, high to waste resources utilization rate, without the generation of two English, but oil product complicated component, Utilize difficulty big, and produce reluctant phenol water, be additionally main to be difficult to large-scale production with bed technology；Domestic garbage gasification is to rubbish Rubbish resource utilization is high, and two English generate few, but gas heating value is low, needs to remove tar, utilize difficulty big, at present based on bed technology It is difficult to large-scale production.The two process there is also when arranging outside solid residue equally, often contains more unburning material, and high temperature enters water Then the phenomenon slagged tap in envelope.

3. summary of the invention

Deficiency that the purpose of the present invention is contemplated to overcome conventional garbage heat treatment technics to exist and provide house refuse heat treatment process percolate to process Technique, the most thoroughly solves percolate and processes and utilize a difficult problem, again the heat energy of the outer grate furnace slag of Appropriate application high temperature, it is achieved that the two of garbage slag Secondary calcining and cooling, obtained the low phosphorus bearing slag of low temperature, it is to avoid the difficult waste water of secondary and the generation of hydration caking clogging, with useless System is useless.

Technical scheme:

It is an object of the invention to, by utilizing auxiliary air oxidizing roasting and percolate vaporization and moving bed to take heat in ash releasing tube, solve simultaneously Percolate and a difficult problem for the outer deslagging of high temperature, obtained the low phosphorus bearing slag of low temperature, it is simple to sorting utilizes and landfill.It is characterized in that at house refuse heat In the outer comb of high temperature furnace slag of reason stove, percolate is sprayed into 600～1500 DEG C of slags vaporizations and reaction, containing odorous gas and low-density unburning material to Upper inflow house refuse heat-treatment furnace pyroreaction again, 300-600 DEG C flowed downward cooling slag is passed through the further oxidizing roasting of air again And sorting；300-800 DEG C of the cleanest higher temperatures slag enters heat exchange feed bin, from the low carbon containing odorless slag of 80-30 DEG C, heat exchange feed bin bottom The outer row of timing.

Ash releasing tube optimum structure is up big and down small taper, and percolate utilizes atomizer laterally to spray into from ash releasing tube top, and air is from ash releasing tube Portion is passed through, and heat exchange feed bin is 1-15:1 with the aspect ratio of ash releasing tube.

Slag flow regime in ash releasing tube is preferably at fluidized bed state, and the slag flow regime of heat exchange feed bin is preferably at moving bed state.

Embodiment is described the feature of the present invention by the present invention in detail.

4. accompanying drawing explanation

Accompanying drawing is the process schematic representation of the present invention.

The drawing of accompanying drawing sets bright as follows:

1, ash releasing tube 2, percolate entrance 3, air access tube 4, heat exchange feed bin 5, upper water-out mouth 6, lower water inlet 7, Rotary discharging valve 8, house refuse heat-treatment furnace

The process characteristic of the present invention is described in detail in detail with embodiment below in conjunction with the accompanying drawings.

5. detailed description of the invention

Embodiment 1,600～1500 DEG C of high temperature furnace slags of house refuse heat-treatment furnace (8) are drained in outer comb (1), by percolate from oozing Filtrate entrance (2) sprays into 600～1500 DEG C of slag vaporizations and reaction, flows upwardly into house refuse heat containing odorous gas and low-density unburning material Processing stove (8) pyroreaction again, it is further that 300-600 DEG C flowed downward cooling slag is passed through air again by air access tube (3) Oxidizing roasting and sorting；300-800 DEG C of the cleanest higher temperatures slag enters heat exchange feed bin (4), by from lower water inlet (6) enter, on go out The cooling water heat exchange that the mouth of a river (5) is discharged, slag cools to 80-30 DEG C, from heat exchange feed bin (4) bottom is by rotary discharging valve (7) timing Arrange low carbon containing odorless slag.

Ash releasing tube (1) optimum structure is up big and down small taper, and percolate utilizes atomizer laterally to spray into from ash releasing tube (1) top, air Being passed through from ash releasing tube (1) bottom, heat exchange feed bin (4) is 1-15:1 with the aspect ratio of ash releasing tube (1).

Slag flow regime in ash releasing tube (1) is preferably at fluidized bed state, and the slag flow regime of heat exchange feed bin (4) is preferably at movement Bed state.

House refuse heat treatment process percolate treating process provided by the present invention, can either thoroughly solve percolate and process and utilize a difficult problem, The heat energy of the outer grate furnace slag of Appropriate application high temperature again, it is achieved that the secondary clacining of garbage slag and cooling, has obtained the low phosphorus bearing slag of low temperature, it is to avoid The difficult waste water of secondary and the generation of hydration caking clogging, waste recycling, equipment volume is little, and steel consumption is low, and fixed investment is big Big reduction, ash discharge structure and process are simple, it is simple to the sorting of slag utilizes and landfill.

Claims

1. house refuse heat treatment process percolate treating process, its technical characteristic is outside the high temperature furnace slag of house refuse heat-treatment furnace In comb, percolate is sprayed into the vaporization of 600～1500 DEG C of slags and reaction, containing odorous gas and low-density unburning material upwards Flowing into house refuse heat-treatment furnace pyroreaction again, 300-600 DEG C flowed downward cooling slag is again passed through air and enters one Step oxidizing roasting and sorting；300-800 DEG C of the cleanest higher temperatures slag enters heat exchange feed bin, from heat exchange feed bin bottom The outer row of low carbon containing odorless slag timing of 80-30 DEG C.

House refuse heat treatment process percolate treating process the most according to claim 1, it is characterised in that ash releasing tube is most preferably tied Structure is up big and down small taper, and percolate utilizes atomizer laterally to spray into from ash releasing tube top, and air is from ash releasing tube bottom Being passed through, heat exchange feed bin is 1-15:1 with the aspect ratio of ash releasing tube.

House refuse heat treatment process percolate treating process the most according to claim 1, it is characterised in that the stove in ash releasing tube Slag flow regime is preferably at fluidized bed state, and the slag flow regime of heat exchange feed bin is preferably at moving bed state.