Process for producing industrial fuel from waste woody materials专利检索-木材工业林业机械与工程专利检索查询-专利查询网

Process for producing industrial fuel from waste woody materials

阅读：929发布：2022-01-15

专利汇可以提供Process for producing industrial fuel from waste woody materials专利检索，专利查询，专利分析的服务。并且A continuous process is described whereby waste woody materials such as bark, twigs, sawdust, plantation waste, and peanut shells, containing around fifty percent moisture are initially predried, and subsequently carbonized, to produce a high yield of relatively pollution-free industrial fuels. By utilizing a twostep process an optimum flow rate of gas may be achieved during both the drying and carbonization steps to maximize the formation of solid and gaseous fuels and to minimize the formation of condensable liquids during pyrolysis. The products of the process of this invention may be a solid industrial fuel, charcoal having more than approximately 23 percent volatile combustible matter, and a fuel gas having fuel value of from approximately 150-185 B.t.u. per standard cubic foot or more. The solid fuel is enriched by allowing the condensible combustible matter in the fuel gas to adsorb thereon. In the alternative, charcoal formed may be pulverized and suspended in a major portion of the gas to produce an enriched fuel gas having a fuel value of from about 400 to 625 B.t.u. per standard cubic foot. The fuel gas may be produced in quantities sufficient to allow use of the sensible heat from a portion thereof for the initial drying step, if desired.，下面是Process for producing industrial fuel from waste woody materials专利的具体信息内容。

权利要求

1. A PROCESS FOR MAKING SUBSTANTIALLY POLLUTION FREE SOLID AND GASEOUS FUELS FROM WOODY MATERIALS COMPRISING THE STEPS OF: CONTINUOUSLY SUPPLYING SAID MATERIALS TO A DRIER; DRYING SAID MATERIALS UNTIL THE MOISTURE CONTENT THEREOF IS LESS THAN ABOUT 15 PERCENT; ADMITTING SAID DRIED MATERIALS TO A CARBONIZER; PYROLYZING SAID MATERIALS IN SAID CARBONIZER TO FORM CHARCOAL HAVING AT LEAST ABOUT 23 PERCENT VOLATILE COMBUSTIBLE MATTER THEREIN AND FUEL GAS HAVING A FUEL VALUE OF AT LEAST ABOUT 150 B.T.U. PER STANDARD CUBIC FOOT; COLLECTING SAID CHARCOAL, AND COOLING SAID CHARCOAL TO A TEMPEATURE OF NOT MORE THE AN ABOUT 150*F; COLLECTING AT LEAST A MAJOR PORTION OF SAID FUEL GAS AND ALLOWING SAID COLLECTED GAS TO COOL TO A TEMPERATURE OF NOT LESS THAN ABOUT 220*F; ADMITTING SAID GAS AND SAID CHARCOAL TO AN ADSORBER; COOLING SAID GAS IN SAID ABSORBER AND ALLOWING THE CONDENSABLE COMBUSTIBLE MATTER THEREIN TO ADSORB ON SAID CHARCOAL TO FORM AN ENRICHED SOLID FUEL.

2. The process of claim 1 further comprising: collecting said gas after the condensable matter therein has been adsorbed on said charcoal; removing substantially all of the particulate matter from said gas to form a gaseous fuel.

3. The process of claim 1 further comprising the step of: collecting said charcoal after the condensable matter in said gas has been adsorbed thereon; pulverizing said collected charcoal until at least about 60 percent passes through a 200 mesh screen.

4. The process of claim 3 wherein the step of pulverizing said charcoal comprises pulverizing said charcoal until about 75 percent passes through a 200 mesh screen.

5. The process of claim 2 wherein the step of removing the particulate matter from said gas comprises removing at least 99 percent, by weight, of the particulate matter suspended therein.

6. The process of claim 1 further comprising: returning at least a portion of said fuel gas to said drier; utilizing the sensible heat of said portion of said gas in said drier to dry said material.

7. The process of claim 6 wherein said drying step comprises: heating said materials in a rotary drier, having a feed inlet at one end and an outlet at an opposite end, to from about 175*-225*F. until the moisture content thereof is less than approximately 15 percent, by circulating a stream of hot gas therethrough.

8. The process of claim 7 wherein said materials are heated to about 200*F. in said drier.

9. The process of claim 6 wherein a burner is disposed at one end of said drier and said drying step further comprises: burning the portion of said fuel gas returned to said drier in said burner, and circulating the products of combustion thereof through said drier.

10. The process of claim 1 wherein said carbonizer is a multiple hearth furnace and said pyrolysis step comprises heating said dry materials in said furnace to a temperature of from about 600*F. to less than about 1,000*F. to form charcoal having at least about twenty three percent volatile combustible matter and hot fuel gAs having a fuel value of about 150-185 B.t.u. per standard cubic foot and having a temperature of from about 800*-1,000*F.

11. The process of claim 10 wherein said pyrolysis step comprises heating said materials to from about 600*F. to about 900*F.

12. The process of claim 1 wherein said woody materials have a moisture content of less than about 60 percent.

13. The process of claim 12 wherein the water content of said materials is about 50 percent.

14. A continuous process for making substantially pollution-free solid and gaseous fuels from woody materials comprising the steps of: supplying said materials to a drier; drying said materials until the moisture content thereof is less than about 15 percent; admitting said dried materials to a multiple hearth furnace carbonizer; pyrolyzing said materials in said carbonizer to form charcoal having at least about 23 percent volatile combustible matter therein and a fuel gas having a fuel value of at least about 150 B.t.u. per standard cubic foot; collecting said charcoal for use as a solid industrial fuel; collecting said gas for use as a gaseous industrial fuel; cooling said charcoal to a temperature of not more than about 150*F.; collecting at least a major portion of said fuel gas and allowing said collected gas to cool to a temperature of not less than about 220*F.; admitting said gas and said charcoal to an adsorber; cooling said gas in said adsorber and allowing the condensible combustible matter therein to adsorb on said charcoal to form an enriched solid fuel.

15. The process of claim 14 further comprising the step of: pulverizing said collected charcoal until at least about 60 percent passes through a 200 mesh screen.

16. The process of claim 15 wherein the step of pulverizing said charcoal comprises pulverizing said charcoal until about 75 percent passes through a 200 mesh screen.

17. The process of claim 14 further comprising: returning at least a portion of said fuel gas to said drier; utilizing the sensible heat of said portion of said gas in said drier to dry said material.

18. The process of claim 17 wherein said drying step comprises: heating said materials in a rotary drier, having a feed inlet at one end and an outlet at an opposite end, to from about 175*-225*F. until the moisture content thereof is less than approximately 15 percent, by circulating a stream of hot gas therethrough.

19. The process of claim 18 wherein said materials are heated to about 200*F. in said drier.

20. The process of claim 17 wherein a burner is disposed at one end of said drier and said drying step further comprises: burning the portion of said fuel gas returned to said drier in said burner, and circulating the products of combustion thereof through said drier.

21. The process of claim 14 wherein said pyrolysis step comprises heating said materials to from about 600*F. to about 900*F.

22. The process of claim 14 wherein said woody materials have moisture content of less than about 60 percent.

23. The process of claim 22 wherein the water content of said materials is about 50 percent.

说明书全文

标题	发布/更新时间	阅读量
一种用于木质集成家居设计环节控制室内甲醛浓度的方法	2020-05-08	260
具有低VOC和雾化值的粘合剂	2020-05-11	234
一种无醛大豆蛋白粉体粘合剂及其制备方法和应用	2020-05-11	880
具有高初始和最终强度的双组分聚氨酯热熔粘合剂	2020-05-11	764
辐射制冷功能涂料及其应用	2020-05-08	347
一种固化剂及其制备方法和树脂组合物及其应用	2020-05-12	617
一种浸渍橡胶木的处理方法	2020-05-11	634
一种利用木质材料对金属盐废液的处理方法	2020-05-12	58
一种双向梯度制备纤维素基气凝胶的方法	2020-05-12	836
生态板	2020-05-13	385

Process for producing industrial fuel from waste woody materials

该功能需要专业版企业版VIP权限，您可以：