JPS60186594A - Regulation of slurry fuel composed of solid carbon particles and liquid - Google Patents

Abstract

PURPOSE:A slurry fuel consisting of a liquid and crude particles of solid fuel such as coal is crushed again immediately before use into fine particles of specific sizes to improve the fluidity of the slurry (handleability) and combustibility. CONSTITUTION:A slurry fuel composed of coarse particles of solid fuel which contains less than about 70% of 200mesh pass and a liquid is crushed again, before use, by means of wet-type crushers 7 and 7a to increase the 200mesh pass over 70% and to adjust the content of the solid carbon to about 50% to regulate the objective slurry fuel.

Description

DETAILED DESCRIPTION OF THE INVENTION 1) Benefits for Business Owners Field III This invention relates to a method for preparing a slurry consisting of a powder such as water and a solid fuel such as coal.

<Conventional technology and its problems> In view of the recent fuel situation, the development of mixing liquid and solid fuel such as coal into a particle size of one foot to form a slurry and using this as a fuel is rapidly progressing. is increasing.

Generally, the viscosity of a fluid in which solids are dispersed in a liquid is controlled by the total specific surface area of the solids. In other words, as the specific surface area of the solid increases, the viscosity of the fluid increases, making it difficult to handle it as a fluid. On the other hand, when this slurry is viewed as a fuel, the smaller the particle size of the contained solids, the higher the combustibility. In other words, the slurry is
In terms of handling and combustion, contradictory properties are required, and in the past, in order to take advantage of one property, it was considered unavoidable to sacrifice some of the other properties.

<Object of the present invention> An object of the present invention is to provide a slurry reconditioning method that can eliminate the problems of the prior art and improve both the fluidity (handling properties) and combustibility of the slurry. There is a particular thing.

<Summary of Means> In short, the present invention includes a tank for storing slurry of solid fuel with a large particle size, and a device 6 for burning the slurry.
．． A wet grinder is placed between the two to sludge.

<Embodiment> An embodiment of the present invention will now be described with reference to the attached drawings.

In FIG. 1, slurry S is temporarily stored in slurry storage tanks 8 and 8a through slurry transport piping 10.

This slurry contains coal grains J- of, for example, 2.00
Passage through the mesh; 11 is significantly less than about 70% (hereinafter referred to as 1'-
1'/slurry') and 'C'. As a result, the specific surface area of the coal can be kept small, and the R+i f'1. 11 (lower 111 to improve the shearability, +, :H7, and make the handling property good.Then, the slurry discharged from the storage tank is subjected to wet crushing 4 to 7, and the coal containing the old man is crushed. The combustibility of the slurry is improved by re-pulverizing the slurry (1+), L+, and adjusting the coal particle diameter to 70% or more through a 200-mesh mesh (hereinafter referred to as "fine powder slurry").

The fine powder slurry passes through a fine powder slurry transport pipe 6, and after its flow rate is adjusted by a valve 5, it is burned by a burner 4 provided in a furnace 3.

Similarly, the fine powder slurry formed in the wet grinder 7a also passes through another fine powder slurry transport pipe 6a and a valve 5a.
It burns in step 4a.

Note that it is preferable that the coal content m of the two slurries (both coarse and fine slurries) be approximately 50%.

By carrying out the present invention, the slurry is made into a coarse slurry from its formation to storage, making it easier to handle, and immediately before combustion, it becomes a fine slurry, which improves its combustibility, making it easier to handle and burn the slurry. It is possible to increase both sex.

[Brief explanation of drawings]

FIG. 1 is a system diagram of a slurry readjustment device showing an embodiment of the present invention. 4. Emperor? -Eating/Nokuesu 6.6a...Fine powder slurry width Oil pipe 7.7a...
...Wet powder (1a machine)

Claims (1)

[Claims] :1. The weather passing through a sieve of 200 meters is about 70.
Slurry fuel consisting of coarse solid fuel particles and liquid of less than 100% is stored in a tank, and before being supplied to the combustion equipment, it is supplied to a 61D type crusher where it is crushed again and passed through a 200 mesh sieve. A method for reconditioning a slurry fuel comprising solid carbon particles and a receptor, characterized in that the amount is about 70% or more, and the solid carbon-containing paper accounts for about 50%.