CN100431721C

CN100431721C - Technology process for thermal decomposition distilling treating urban house refuse

Info

Publication number: CN100431721C
Application number: CNB2003101065753A
Authority: CN
Inventors: 万元坤; 王健
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-03
Filing date: 2003-12-03
Publication date: 2008-11-12
Anticipated expiration: 2023-12-03
Also published as: CN1623693A

Abstract

The present invention relates to a technological method for thermal decomposition distilling treatment of urban house refuse. The method treats the house refuse in the processing steps of crushing, magnetically separating, screening, squeezing, dewatering, distilling, cooling, pulverization, etc. Because of the processing steps of magnetically separating and screening, the method effectively recovers useful objects, and because coarse materials are sorted by adopting an artificial method and a water-suspension method, the method makes use of the characteristic of water and also reduces secondary pollution from recovered objects. The method greatly reduces treating cost by using marsh gas generated by the treatment of squeezing liquid as heating raw materials for the processing steps of dewatering and distilling, and is favorable for the circulating use of resources for the reason that house refuse dregs can be used as materials for making bricks.

Description

Heating up in a steamer of domestic waste pyrolysis treatment process method

The present invention relates to a kind of treatment process method of domestic waste.

Relevant by retrieval patent documentation, the present treatment process method that does not retrieve the domestic waste identical as yet with the present invention.Along with the raising of people's quality of life and developing rapidly of petro chemical industry, the chemical substance that can't degrade enters house refuse in a large number, make the variation of the house refuse generation " matter " in city, people change analogy visually with this and are " white pollution ", domestic waste can not be as compost, fertilizes the soil down in the migration rural area.The method of existing domestic processing domestic waste mainly contains two kinds: the one, and landfill method.The place that promptly select to be fit to is coated with etc. as depression, valley floor, dry riverbed, seabeach, river, and domestic waste is toppled over wherein, take to cover after certain sterilization, the fly eradication measure go up a small amount of earth in addition compacting fill and lead up.The advantage of this method is that treating capacity is big, expense is cheaper, select place difficulty, management expectancy height, diffusate to handle problems such as difficulty but also exist, because landfill yard resembles a large-scale bioreactor, the house refuse that with the organic matter is main component is after landfill, can rot to degrade, meeting polluted underground water after its analyte diafiltration, also can produce the explosion caused biogas of possibility and other pernicious gas, and because the many cities of China do not have the landfill condition of house refuse, especially to use the city of underground water, more can not do landfill.The 2nd, burning method.Promptly adopt the method for burning to handle house refuse.The advantage of this method is to cause by pyrolytic and deep oxidation rapid " subtracting appearance " of house refuse.Do like this and help protecting land resource; but its shortcoming also clearly: first; because the water content of house refuse is different with the difference in season; rainy season, its water content can be up to more than 40%; adopt burning method; make the whole carbonizations of the so high rubbish of water content, need expend a large amount of fuel, processing cost is very high.The second, can produce a large amount of steam, carbon dioxide and other pernicious gas during burning domestic garbage, be difficult to be collected for these gases, let alone purified treatment, burn an air of periphery and be subjected to severe contamination.The 3rd, can produce a large amount of flying dusts and bottom ash during burning.And, at present house refuse is still taked to disperse the way of banking up for the city that does not possess landfill and burning domestic garbage, and the air-dry or weather-drying of the dependence that has is chosen worn-out person to be active in all day in the rubbish heap, and stacking the field becomes diffuse source filthy and disease.So be necessary the processing method of existing house refuse is improved, to satisfy actual requirement.

The objective of the invention is to provide a kind of heating up in a steamer of pyrolysis treatment process method of domestic waste.

To achieve these goals, the present invention realizes by following process:

With domestic waste through fragmentation, magnetic separation, screening, fines, squeezing, loading of kiln, dewater, heating up in a steamer, heat up in a steamer dissolve kiln, the cooling pulverization process; The ironware that described magnetic separation operation obtains is through recycling; The plastics that the coarse fodder that described screening operation obtains obtains after artificial and water suspension method letter sorting operation are handled, cullet, non-ferrous metal are through recycling; Described thick material artificial and that water suspension method letter sorting operation obtains is sent into the loading of kiln of loading of kiln operation; The pressed liquor that described squeezing process obtains enters methane-generating pit and carries out fermentation process; Described cleaning fluid artificial and that water suspension method letter sorting operation obtains enters methane-generating pit and carries out fermentation process; The biogas that described pressed liquor, cleaning fluid produce in methane-generating pit is as dewatering, heat up in a steamer the heating raw of chemical industry preface; Described dehydration, heat up in a steamer the pyrolysis gas that produces in the chemical industry preface and handle through multilevel system.

It is Unareobic fermentation that the pressed liquor that obtains in the described squeezing process is handled the process of taking.

The described heating-up temperature t that heats up in a steamer in the chemical industry preface is: 180 ℃≤t≤220 ℃.

During processing, domestic waste is concentrated, carried out break process.Rubbish after the fragmentation is sent into magnetic separator and is carried out magnetic separation, absorbs ironware.The ironware of absorbing out is recycled.Rubbish after the fragmentation is after the magnetic separator magnetic separation, and rubbish enters screening machine and sieves under the drive of induction system.The coarse fodder that the screening operation obtains is told plastics, cullet, non-ferrous metal after artificial and water suspension method letter sorting operation are handled, and recycles.The fines that the screening operation obtains is sent into squeezer and is squeezed processing.Pressed liquor that squeezing process squeezes out and cleaning fluid enter methane-generating pit and carry out fermentation process, and the biogas of generation is as dewatering, heat up in a steamer the heating raw of chemical industry preface.The press residue that squeezing process squeezes out is sent into the loading of kiln of loading of kiln operation, enters dehydration, heats up in a steamer the chemical industry preface and handle.Can be used as the material of brick made from waste through the rubbish slag kiln discharge of heating up in a steamer, after pulverizing.

Advantage of the present invention is; Because be provided with magnetic separation, screening operation,, thus effectively useful thing is reclaimed; Because the coarse fodder that obtains of screening operation takes the method for artificial and aqueous suspension to sort, and has utilized the characteristic of water to handle, simultaneously regenerant is cleaned, thereby reduced the secondary pollution of regenerant, help the recycling of regenerant; Because pressed liquor, cleaning fluid be after fermentation process, the biogas of generation as dehydration, heat up in a steamer the heating raw of chemical industry preface, thereby made full use of resource, greatly reduce the cost of garbage disposal, reduced pollution simultaneously; Owing to dehydration, heat up in a steamer the pyrolysis gas that produces in the chemical industry preface, thereby significantly reduced banishing of pernicious gas through multistage circular treatment; Owing to take Unareobic fermentation that pressed liquor is handled, thereby reduced the cost of handling, improved the rate that of biogas; Because the rubbish slag after handling can be used as the material of brickmaking, thereby turns waste into wealth, help resource circulation and use; Because the process uniqueness, processing cost is low, pollutes for a short time, and dependable performance is so there is very big practical and popularizing value.

Below with reference to the description of drawings embodiments of the invention:

Accompanying drawing is the artwork of heating up in a steamer of domestic waste pyrolysis treatment process method of the present invention.

With reference to accompanying drawing, heating up in a steamer of domestic waste pyrolysis treatment process method of the present invention is: house refuse through fragmentation, magnetic separation, screening, fines, squeezing, loading of kiln, dewater, heating up in a steamer, heat up in a steamer dissolve kiln, the cooling pulverization process; The ironware that the magnetic separation operation obtains is through recycling; The plastics that the coarse fodder that the screening operation obtains obtains after artificial and water suspension method letter sorting operation are handled, cullet, non-ferrous metal are through recycling; Thick material artificial and that water suspension method letter sorting operation obtains is sent into the loading of kiln of loading of kiln operation.The pressed liquor that squeezing process obtains, cleaning fluid artificial and that water suspension method letter sorting operation obtains is sent into methane-generating pit respectively and is carried out fermentation process.It is Unareobic fermentation that pressed liquor, cleaning fluid are handled the process of taking.The biogas that pressed liquor, cleaning fluid produce in methane-generating pit is as dewatering, heat up in a steamer the heating raw of chemical industry preface; The heating-up temperature t that heats up in a steamer in the chemical industry preface is: 180 ℃≤t≤220 ℃, present embodiment heating-up temperature t is 200 ℃.Dehydration, heat up in a steamer the pyrolysis gas that produces in the chemical industry preface through the multilevel system circular treatment.Rubbish slag after dehydration, the heating up in a steamer can be used as the material of brick made from waste after crushed.

Claims

1, heating up in a steamer of domestic waste pyrolysis treatment process method is characterized in that the flow process of this method is: house refuse through fragmentation, magnetic separation, screening, fines, squeezing, loading of kiln, dewater, heating up in a steamer, heat up in a steamer dissolve kiln, the cooling pulverization process; The ironware that described magnetic separation operation obtains is through recycling; The plastics that the coarse fodder that described screening operation obtains obtains after artificial and water suspension method letter sorting operation are handled, cullet, non-ferrous metal are through recycling; Described thick material artificial and that water suspension method letter sorting operation obtains is sent into the loading of kiln of loading of kiln operation; The pressed liquor that described squeezing process obtains enters methane-generating pit and carries out fermentation process; Described cleaning fluid artificial and that water suspension method letter sorting operation obtains enters methane-generating pit and carries out fermentation process; The biogas that described pressed liquor, cleaning fluid produce in methane-generating pit is as dewatering, heat up in a steamer the heating raw of chemical industry preface; Described dehydration, heat up in a steamer the pyrolysis gas that produces in the chemical industry preface and handle through multilevel system.

2, heating up in a steamer of domestic waste pyrolysis treatment process method according to claim 1 is characterized in that: it is Unareobic fermentation that the pressed liquor that obtains in the described squeezing process is handled the process of taking.

3, heating up in a steamer of domestic waste pyrolysis treatment process method according to claim 1, it is characterized in that: the described heating-up temperature t that heats up in a steamer in the chemical industry preface is: 180 ℃≤t≤220 ℃.