CN101280237A

CN101280237A - Method for producing compressed garbage coal

Info

Publication number: CN101280237A
Application number: CNA2008100697528A
Authority: CN
Inventors: 付志明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-27
Filing date: 2008-05-27
Publication date: 2008-10-08

Abstract

The invention discloses a method of manufacturing compressed garbage coal; the method includes the steps: 1) preliminary sorting, namely, the inorganic and organic plastic garbage in the garbage raw materials are removed and the residual garbage are the garbage raw material for spare use; 2) the garbage raw material are processed with dehydration treatment; 3) the garbage raw material are processed with rolling treatment after the dehydration treatment; 4) the rolled garbage raw material are cut into pieces; 5) the cut garbage raw material are formed through compaction and the intensity of the formation is more than 0.8t/m3; the method of manufacturing the compressed garbage coal has the advantages of solving the problems of secondary pollution, site occupation and high cost, transforming the garbage into useful garbage coal, low cost; the manufactured compressed garbage coal has higher economic value.

Description

A kind of method of making compressed garbage coal

Technical field

The present invention relates to a kind of refuse treatment and reutilization technology, relate in particular to a kind of method of making compressed garbage coal.

Background technology

Traditional waste disposal method mainly contains two kinds: the one, and burning method, the 2nd, landfill method, or the like, its treatment effect is all not satisfactory.The waste incineration method is that rubbish is directly burnt, because the ununiformity of rubbish and burning that free-running property makes rubbish be difficult to fully carry out, thereby is easy to generate secondary pollution; The garbage loading embeading method is that scrap heap is pressed in the hollow place, earthing sealing in the above again, being allowed to condition in the hole slowly fermentation and decomposing, being decomposed into combustible gas gradually after for many years, again with these gaseous combustions dischargings, not only these gases can't utilize, and the waste pit occupied ground is big, the time is long, and owing to be that out of door is handled the field, is easy to generate the liquid of secondary pollution after raining, thereby dealing with very trouble, the refuse tip construction cost is also very high in addition.

Summary of the invention

A kind of method of making compressed garbage coal, the step of this method is as follows:

1) preliminary selection, after inorganics in the garbage raw material and the rejecting of organic plastics class rubbish, remaining rubbish is standby as garbage raw material;

2) garbage raw material that obtains after the primary election is carried out processed;

3) garbage raw material after the dehydration is rolled processing;

4) chopping of the garbage raw material after will rolling;

5) the garbage raw material compacting after will shredding is shaped, and makes its density greater than the 0.8t/ cubic meter;

Wherein, behind the binding agent of adding 1%-10%, handle according to step 5) again in the garbage raw material that can in step 4), shred earlier.

Also mix earlier in the garbage raw material that can in step 4), shred coal dust, yellow clay and with it thorough mixing handle according to step 5) again.

The above-mentioned triangular weight ratio of the coal dust that mixes, yellow clay and garbage raw material is 3: 3: 4.

Useful technique effect of the present invention is: solved the problem that the secondary pollution in the refuse treatment, place take and cost is high, turned waste into wealth, with low cost, the compressed garbage coal that manufactures also has higher economic value.

Description of drawings

Fig. 1, be rubbish sub-argument of the present invention and compressed garbage coal manufacturing process block diagram.

Embodiment

The method of making compressed garbage coal of the present invention is rubbish to be considered as a kind of new Mineral resources under existing technology, rubbish is maximized the use, form a kind of industry, need not again with the burden of rubbish as a kind of environmental protection, the problem that solves the not tractable problem of rubbish fully and how to make full use of, and no longer allow refuse treatment take a large amount of soils.

Compressed garbage only carries out physical compression to rubbish, does not change the chemical property of rubbish, also pollution-free generation in the production.

Present city is not owing to substantially all have to be the energy with the burning coal, thereby municipal wastes is mainly domestic refuse, domestic refuse is mainly based on organic class material, has only a spot of mineral-type rubbish (as building waste etc.), organic class material all is combustible, therefore flammable matter accounts for more than 80%, that is to say that rubbish all is combustible more than 80%, illustrates that promptly rubbish is combustible.

Method of the present invention is:

1) utilize existing urban sanitation system that municipal wastes is collected the disposal site, in the disposal site garbage raw material process is roughly selected, mineral-type rubbish that will be bigger such as queen closer, stone, soil, glass etc. and organically plastics bag, waste paper, metal etc. and the part that contains liquid remove tentatively that (queen closer, stone, soil etc. are landfill directly, plastics bag, waste paper, metal etc. can be recycled separately), the rubbish after preliminary selection can be used as garbage raw material and enters next process;

2) will send into water extracter through the garbage raw material after roughly selecting and carry out processed (when water content is little also can without processed);

3) garbage raw material after will dewatering is sent in the common rolling machine and is crushed;

4), in the garbage raw material of chopping, add the binding agent (look the rubbish situation, when its cohesiveness is better also adding additives not) of 1-10% more again shredding through the garbage raw material after rolling;

5) with common pressure forming machine broken garbage raw material compacting is shaped, its shape can be made shapes such as coal cinder, coal briquette, honeycomb briquette, guarantees that this rubbish its density after compacting is shaped reaches more than the 0.6t/ cubic meter or higher density.Compress closely knit more well more.

Before the garbage raw material compacting was shaped, the combustibility of also visual garbage raw material itself added recompression shaping behind an amount of coal dust, the yellow clay thorough mixing therein.General coal dust, yellow clay and the triangular weight ratio of garbage raw material can be 3: 3: 4.

Compressed garbage coal completes.

Compressed garbage coal behind the closely knit like this one-tenth piece just can directly burn in existing coal stove and boiler, or be decomposed into inflammable gas in the pyritous cracker as coal, and is easy to transportation and stores, Here it is compressed garbage coal.

Because after rubbish is compressed into closely knit solid, have loose characteristic no longer resembling originally, the space that loose rubbish occupies is big, can influence air admission, and when in stove, burning, because loose and easy fast comprehensively burning, the oxygen of instantaneous needs just requires a lot, and the instantaneous air that enters in the stove of energy is limited, so just make the incineration firing anoxic, can not fully burn, form a large amount of smog and obnoxious flavour, cause environmental pollution.And compressed garbage coal can be cut into the bulk of corresponding size as required, the same with coal, do not take up space, the energy homogeneous combustion, oxygen requirement is identical with coal burning to be uniformly, so its combustioncharacteristics is the same with the burning of coal, fully perfect combustion, discharge maximum heats, also just can not produce smog and obnoxious flavour.Best and the part raw coal mixed firing of compressed garbage coal.

The combustion principle of compressed garbage coal is the same with traditional incineration firing method to be to adopt common combustion method, also the principle with garbage loading embeading is identical, the garbage loading embeading method be allow rubbish slowly be decomposed into inflammable gas etc., and then allow its gaseous combustion discharge, and compressed garbage coal is with after the rubbish compression, utilize the high temperature in the stove, allow organic class material in the rubbish be to be decomposed into inflammable gas and equally, but but shortened the time of decomposing greatly in the stove internal combustion.

Owing to contain perishable organic substance such as food, should not put for a long time in the compressed garbage coal.Therefore need are deposited the compressed garbage coal of for some time, can take to carry out vacuum packaging or add the sterilant of some environment-friendly types when the production, just can solve the problem that it is deposited, and can solve the pollution problem that it has decomposed odour with cheap reprocessed plastic(s) bag.

The composition of compressed garbage coal is owing to mainly be based on organic substance, so its fuel value is identical with coal even also higher than coal, and does not almost have residue after the burning.As pending as coal rubbish, the domestic refuse of each city generation every day just can be burnt in this city and utilize after treatment the same day, from then on just no longer needed a large amount of soils to stack, handle municipal wastes.

Because general incineration treatment of garbage method, environmental pollution is serious, the expense height, and be unfavorable for utilizing, therefore do not advocate this treatment process; Though the garbage loading embeading method than the environmental protection of incineration firing method, because the cycle of garbage decomposition is oversize, need take a large amount of soils, and need a large amount of cost of consumption to be used for building the refuse tip, and its complex process.And compressed garbage coal is because technology is simple, equipment is uncomplicated, the compression production cost is not high, probably about 50 yuan/ton, and since rubbish burning of coal value and high-quality coal almost even also much higher, therefore by present coal sales price 300-400 unit/ton, profit is quite high, even press half calculating of coal present price, high economic benefit is arranged also, high environment protecting is more arranged, because can thoroughly solve the pollution and the land occupation problem of municipal wastes.

Claims

1, a kind of method of making compressed garbage coal, it is characterized in that: the step of this method is as follows:

1) preliminary selection, after inorganics in the rubbish and the rejecting of organic plastics class rubbish, remaining rubbish is standby as garbage raw material;

3) garbage raw material after the dehydration is rolled processing;

4) garbage raw material after the roll extrusion is shredded;

5) the garbage raw material compacting after will shredding is shaped, and makes its density greater than the 0.6t/ cubic meter;

Compressed garbage coal completes.

2, a kind of method of making compressed garbage coal according to claim 1 is characterized in that: handling according to step 5) behind the binding agent of the garbage raw material adding 1%-10% that shreds in the step 4) again.

3, a kind of method of making compressed garbage coal according to claim 1 and 2 is characterized in that: the garbage raw material that shreds in the step 4) is mixed coal dust, yellow clay earlier and with it behind the thorough mixing, handle according to step 5) again.

4, a kind of method of making compressed garbage coal according to claim 3, it is characterized in that: the triangular weight ratio of the coal dust that mixes, yellow clay and garbage raw material is 3: 3: 4.