The Research Of Concentrate For Water Coal Slurry And Analysis The Gasification Efficiency Effect Of Gasifier

Coal water slurry(CWS)is a novel clean liquid fuels and rise in the last century in 70s.Thanks to the unique energy structure of our country,the development of coal water slurry technology is very rapid.Coal water slurry gasification technology has been widely used in coal chemical industry because of its advantages such as clean,high efficiency and so on.The research of concentrate and the modification for water coal slurry has became hot spots.Coal water slurry is a kind of coal based fluid which is composed of coal powder,water and appropriate amount of chemical additives.The coal water slurry have good rheology and stability.The coal species,particle size distribution and additives significant influence the quality and performance of coal water slurry.In this paper,applied research mainly from lignite quality modification,adjustment of coal blending,high concentration slurry blending,optimization of coal water slurry particle size distribution,mix additives has carried on the CWS.The research of the slurryability,rheological characteristics and stability of coal water slurries.Lignite for the dehydration of modification,and with the shenhua coal in proportion to the mixing pulping got good pulping effect.On the basis of its we tried high calorific value,low ash,low moisture content of hongshixia coal and shenhua coal blending research,The research applied to practical production.For high concentration coal slurry preparation by high pressure homogenizer for performance analysis,and completed the high concentration coal slurry mixing experimentsReference to the bimodal distribution theory of coal water slurry particle size distribution is optimized adjustment,including classifying grinding technology has been putting-in-service proactively production,can better improve coal water slurry particle size distribution and concentration of coal slurry.Ultrafine pulverized coal blending technology use yangquan coal increase proportion of fine particles,coal water slurry production device has been successfully completed test.In this paper,respectively with naphthalene and calcium lignosulphonate as raw materials was synthesized successfully ?-naphthalene sulfonate formaldehyde condensation compound and two kinds of coal water slurry additive sulfonated lignin sulfonic acid calcium,and the study on the distribution of two kinds of additives.This series of compound additive can reduce the viscosity of coal water slurry and concentration can be ensured.The HS-1 additive has already been put into operation.In this paper,the gasification efficiency of high concentration coal water slurry was analyzed and gasifier burner were optimized.