Here is a bit of info that took about 10 minutes to dig up.
Excuse the Chinglish.
"The technical advantages of burning Coal Water Slurry
On behalf of coal-water slurry as a substitute for heavy fuel oil and crude oil for boiler and furnace combustion. Its main advantages are:
(1) burn better. Coal-water slurry viscosity of heavy oil below, easy-to-conditioning, adjustable load to a minimum of 40%. Replacement of heavy oil in the boiler combustion, the combustion efficiency of 96% to 99%, the efficiency of boilers in about 90%, to reach the same level of fuel combustion to facilitate adjustment, stable and reliable operation.
(2) environmental effect. As the temperature of burning coal slurry in 1200 ~ 1300 ?, coal and fuel than the low-temperature 100 ~ 150 ?, coal-water slurry coal is low sulfur and ash content reasons, fueled with coal-water slurry after the S02 and NOx emissions levels lower And the other in the preparation of coal-water slurry in the process of desulfurization agent can be added to the effect desulfurization, desulfurization rate of 40%. Low-noise and dust environment. Slag activity, after burning ash can use as a mixture of cement, there is no secondary pollution.
(3) technology has many advantages. In the course of application of wet pulp mill, grinding low-temperature (50 ~ 60 ?), safety; coal with low ash content coal-water slurry, the boiler heating surface wear and tear than coal-fired, low maintenance costs; not prepared steel Coal and coal-preparation market, wasted ash only covers the ash field area of only 1 / 4.
(4) to burn coal-water slurry to below investment in coal burning. On behalf of coal-water slurry oil can make full use of existing equipment, to simplify the production process, low investment. And to burn coal than to burn coal-water slurry to the cost of burning coal is only 1 / 3 to 1 / 2, the transformation of time to burn coal only 1 / 3, oil-fired boiler to burn coal-water slurry Significant economic benefits Forward."