CN1123636C - Method for producing water coal slurry - Google Patents

Abstract

The present invention relates to a preparation method for water coal slurry. Technological processes comprise raw material impurity removal, pulverization, collection, mixture and slurry storage, wherein in the pulverization process, a coal pulverization machine is adopted. The coal pulverization machine has a left hammer disc and a right hammer disc, is assembled on the same transmission shaft with a fan, and has the functions of multistage pulverization and self-selection. In the mixture process, a premixing tank with a beater and a homogenization mixing colloid mill are adopted, and a powder dust collector is arranged between the coal pulverization machine and the mixing tank. The method has the characteristics of low device manufacture cost, less area occupation, short technological process, low noise, no powder dust pollution, etc., remarkably enhances product quality and improves environment conditions.

Description

Method for producing water coal slurry

Technical field

The present invention relates to a kind of method for producing water coal slurry, used disintegrating apparatus also is applicable to materials such as pulverizing talcum, kaolin, graphite, also is applicable to and pulverizes various fuel, dyestuff, herbal medicine etc.

Background technology

At present, the pulping process of preparation coal water slurry is a lot, but it generally only limits to use in large-scale pulping process flow, is unsuitable for using in the small-sized pulping process flow.In the particularly existing fuel, coal water slurry has been the desirable substitute products of fuel such as raw coal, heavy oil as a kind of novel energy-saving environment-friendly fuel, obtains wide popularization and application.Therefore, country with this technology as giving priority to project.In the large-scale pulping process flows such as the pulverizing of existing domestic and international production coal water slurry, mixing, Chu slurry, thick, the thin two-stage shredder assembly of the normal employing of broken equipment used.Its slightly broken equipment has jaw crusher, gyratory crusher, roller crusher etc., and carefully broken equipment has equipment such as ball mill, pulverizer to pulverize.Aforesaid device structure more complicated, quality is heavy, the manufacturing cost height, its installation, maintenance cost is big, noise is big, dust is many, contaminate environment, support equipment is many, floor space is also big, its inapplicable small-sized pulping process flow, so influence it and apply.At present, the used pulping equipment of small-sized pulping process flow is suddenly waited to develop.

Summary of the invention

The purpose of this invention is to provide a kind of method for producing water coal slurry, it is applicable to small-sized pulping process flow, have characteristics such as the device fabrication cost is low, floor space is few, technical process is short, noise is little, no dust pollution, can significantly improve quality product and improve envrionment conditions.

The object of the present invention is achieved like this: the technical process of this method comprises impurity removing, pulverizing, collection, mixing, storage slurry, wherein circuit grinding adopts and has left and right hammer dish and be assembled in the multistage pulverizing of same transmission shaft, the coal pulverizer of free function with fan, mixture length adopts premix mixing tank and the intimate mixing colloidal mill that has agitator, between coal pulverizer and mixing tank dust collection is set.

Above-mentioned dust collection is made of the tornado dust collector that are interconnected, sack cleaner and pay-off.

Because the present invention is with the pulverizing of the preparation coal water slurry of routine, mix, circuit grinding in the technical process such as Chu slurry adopts has a left side, right hammer disk, and be assembled in the multistage pulverizing of same transmission shaft with fan, the coal pulverizer of free function, mixture length adopts and has the premix mixing tank of agitator and the two-stage thorough mixing of intimate mixing colloidal mill, between coal pulverizer and mixing tank, dust collection is set, dust collection thoroughly, overcome in the prior art the insurmountable difficult problem of airborne dust when broken fully, so this technical process equipment used is few, simple in structure, be applicable to small-sized pulping process flow, it is low to have the device fabrication cost, floor space is few, technical process is short, noise is little, characteristics such as no dust pollution, the coal water slurry of making reaches the required standard requirement, its grinding particle size 200 purposes reach more than 80%, can significantly improve quality product.Because of noise is very little, there is not dust substantially, so obviously improve envrionment conditions.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described.

Fig. 1 is a kind of process flow sheet of the present invention.

Fig. 2 is a kind of structural representation of coal pulverizer among Fig. 1.

Fig. 3 is a kind of structural representation of collector among Fig. 1.

Fig. 4 is a kind of structural representation of mixing tank among Fig. 1.

Embodiment

1-4 describes the concrete structure of technical process of the present invention and equipment used in detail with reference to the accompanying drawings.

Technical process of the present invention is pulverizing → collection → premix → homogeneous → storage slurry.Wherein circuit grinding adopts the coal pulverizer 1 of multistage pulverizing, free function.Collect flow process and adopt the dust collection 2 that constitutes by the tornado dust collector 14 that are interconnected, sack cleaner 15 and pay-off 16.Mixture length adopts premix mixing tank 3 and the intimate mixing colloidal mill 4 that has agitator 17.Between coal pulverizer 1 and mixing tank 3, dust collection 2 is set.Coal pulverizer 1 (applying for a patent separately) comprises lower body 13, the upper machine body 8 that has hopper 7 that is assembled with bearing support 6 and assembles parts such as its interior transmission shaft 12, hammer dish, fan 11.Wherein the hammer dish is made of left side hammer dish 9, right hammer disk 10.Left side hammer dish 9, right hammer disk 10 are assembled in respectively in the left and right working chamber of body.Transmission shaft 12 is assembled on the localized bearing support 6 of dissection type plate washer, and bearing support 6 is made of loam cake, lower cover.Fan 11 is packed on the same transmission shaft 12 with left hammer dish 9, right hammer disk 11.The flabellum utilization fan axle and the support plate of fan 11 are assembled into one.The pay-off 17 of this dust collection 2 can adopt oscillating feeder, screw feeder or other feeding device.On the pipeline of mixing tank 3 and slurry can 5, can control valve and slush pump be set according to service requirements.Equipment used is except that coal pulverizer 1 is special specific equipment in this technical process, and all the other equipment all can be selected the commercially available prod of corresponding specification according to actual needs.

During work, earlier feed coal is carried out the magnetic separation removal of impurities.The transmission shaft 12 that is driven coal pulverizer 1 by drive unit rotates, and drives fan 11, left hammer dish 9, right hammer disk 10 rotations.Because the special construction of fan, it makes air-flow enter from hopper 7, is flowed out by the outlet of fan 11 tops.When feed coal is entered the left working chamber that is equipped with left hammer dish 9 by hopper 7, bump, hammer by left side hammer dish 9 are pounded and are carried out fragmentation, after the coal of fragmentation reaches the granularity of regulation, along with air-flow enters right working chamber, pass through the fragmentation of right hammer disk 10 again, make satisfactory coal dust, discharge by the outlet of fan 11 tops, finish thickness fragmentation feed coal with air-flow.Fan 3 rotates the wind that produces makes coal dust enter collector 2 by coal pulverizer 1, by tornado dust collector 14, sack cleaner 15 and pay-off 16, that coal powder collection is good.Then coal dust is sent into mixing tank 3, add entry and dispersion agent on request, by agitator 17 rotations, after making coal dust and water carry out the premix mixing, enter colloidal mill 4 again,, make coal dust and water thorough mixing by changeing tooth and the high speed rotating of deciding tooth, reach the purpose of homogeneous, the material behind the homogeneous has been exactly a coal water slurry.The coal water slurry of making enters slurry can 5, can supply the use of boiler at any time.

Claims (2)

1, a kind of method for producing water coal slurry, technical process comprises impurity removing, pulverizing, collection, mixing, storage slurry, it is characterized in that: circuit grinding adopts to have left and right hammer dish and is assembled in the multistage pulverizing of same transmission shaft, the coal pulverizer of free function with fan, mixture length adopts premix mixing tank and the intimate mixing colloidal mill that has agitator, between coal pulverizer and mixing tank dust collection is set.

2, method for producing water coal slurry according to claim 1 is characterized in that dust collection is made of the tornado dust collector that are interconnected, sack cleaner and pay-off.