Study Of Fertilizer Effect And Compound Technology Of Biomass Gasification ASH

ABSTRACT It is not dividual that energy exploitation and environment protection. China is one of the biggest countries on producing and consuming energy resource, and it is also one of the badly polluted countries.In recent years,people have perceived the threat and effect with the circumstance exacerbate,they begin to pay attention to atmosphere quality and entironment.To protect the environment is very important energy tactic.The environment factor will be significantly constrained by energy development.With biomass gasification power generation technologies mature and the size of the project generating growing,biomass gasification ash utilization of the resources become a hotspot on the biomass field.Biomass gasification ash is outgrowth of the biomass gasification for power generation,The kalium in the straw is all salts in the form of ash in the gasification process.it is about above 1.0%,some can overtop 10%,and 80～90%is water-solubility kalium,it is easy to absorb by crop,it also contain N,P,Ca,Zn,Mu,Mg etc.Using the biomass gasification ash to produce compound fertilizer,the products both have N,P,K and organic compound and microelement,it is propitious to crop grow and improve utilization rate.Using the biomass gasification ash to manufacture compound fertilizer,it is not only abate the status that short of kalium but also can implement biomass gasification ash utilization of the resources and protecting the ecological environment has important practical significanceThis article is under the support that the 863 national projects "biomass gasification for power generation and optimization system demonstration projects" (the serial number:2003AA514010),we do the research on major component characteristics,fertilizer effect and technology of biomass gasification ash through the experiment.The main contents and conclusions are as follows:(1)In the paddies ash,kalium is 2.14%,phosphor is 0.24%.(2)According to fertilizer effect experiment of biomass gasification ash,the experimental results indicate:under the same nutrition conditions,biomass gasification ash compares with the fertilizer:the gemmiparous time is earlier than the time of the fertilizer except the cucumber;late growing significantly better than the latter,the laminae is thick and lustrous;at the course of growing the former has not insect pest but the latter has;growing is better than single fertilizer when add nitrogen and phosphor to biomass gasification ash.(3)Produce compound fertilizer can adopt disc granulation technology,the experimental results indicate:design the direction for producing fertilizer is 15-6-9,by testing the result is 14.60-6.10-10.02,granularity is 95.8%,the aquiferous quantity is 4.7%,these are eligible basically.(4)In the biomass gasification ash compound fertilizer cucumbers grow better than common compound fertilizer,as the height,the breadth and length of lamina,it is not dividual that it has microelement as Ca,B,Zn etc.In the biomass gasification ash,they can accelerate cucumber grows;otherwise,we can observe which does not artifactitious biomass gasification ash fertilizer grows better than biomass gasification ash compound fertilizer,it has the phenomena that fertilizer effect balance out.(5)Benefit analyse:the results show that net present value(NPV)is 22306.95 Yuan,and static pay back period is 7.67 year,internal rate of return(IRR)is 10.1%.