![]() Method of chemical treatment of fuel in pseudoliquefied layer
专利摘要:
1523500 Multi-type particle fluidised bed BATTELLE DEVELOPMENT CORP 13 Oct 1976 [21 Oct 1975] 42588/76 Heading B1F [Also in Division C5] A method of operating a fluidized bed, e.g. for the efficient reaction between at least two reactants comprises (i) forming an entrained or lean phase fluidized bed in a first space region e.g. as shown as I in Fig. 2, containing a first solid bed particle component 60, (ii) forming in a more limited space region II within the first region a dense phase fluidized bed containing a second solid bed particle component 62 essentially comprising a material having longterm physical and chemical stability in the fluidized bed so as to be substantially non- agglomerating and not subject to substantial attrition therein, (iii) providing a recirculation path e.g. via separator 36, reservoir chamber 74 and recycle conduit 76, for the first particle component from the first space region through the dense fluidized bed in the more limited space region and (iv) operating the fluidized bed at a velocity such that the second component particles are effectively retained in the dense fluidized bed in the more limited space region, whereas the first component particles recirculate and interpenetrate therethrough, commingling with the second component particles. Most preferably the fluidized bed is used for the gasification of a carbonaceous material, the bed being fluidized with the gaseous reactant e.g. air and heat being withdrawn as an energy product. It is preferred that most of the carbonaceous material e.g. coal is burned in the dense fluidized bed. If the coal contains sulphur a sulphur sorbent e.g. calcium and/or magnesium carbonate may be fed into the system. The bed particle components may be an oxide of iron, aluminium oxide, nickel, nickel oxide or a carbonate of calcium and/or magnesium. Both components may be of the same material, in which case the first component is of smaller particle size than the second component. 公开号:SU1258334A3 申请号:SU2414096 申请日:1976-10-21 公开日:1986-09-15 发明作者:Нэк Герман;Лиу Ке-Тиен 申请人:Баттеле Дивелопмент Корп. (Фирма); IPC主号:
专利说明:
The invention relates to a method for treating fuel, in particular to a method for chemical treatment of fuel, and can be used in fuel combustion plants. The aim of the invention is to improve the economy by reducing underburning. The drawing shows an installation for carrying out the method of chemical treatment of fuel. The installation contains a combustion chamber 1, the lower part of which is provided with a pipe 2 for supplying fuel and, if necessary, a sulfur bonding agent, a pipe 3 for supplying oxygen-containing gas, for example air, a perforated distribution element 4, and also a pipe 5 dp for feeding a fine-grained component 6 and the coarse-grained component 7. In this case, the nozzle 5 includes the other nozzle indicated by the arrow 8 for air supply. The combustion chamber I is connected to the cyclone separator 9 through a pipe} 0, installed in its upper part, and a pipeline P with a ball KJta placed in it. Powder limestone, kg / h5.44 22.4 .10.5 Primary air m / nin1,322,991,98 Together with fuel, m VMHH four Secondary, m / min Fine-grained component In the area between the distribution element 4 and the pipe 5. In the separator 9, the particles of the fine-grained component are separated from the gas stream flowing through the pipeline 10 and recycled to the combustion chamber 1 through pipeline 1I. The lower part of the separator 9 is equipped with a container 13 for collecting fine-grained particles having a sight glass 14 and a conduit 15 for diverting ash 16 into the container 16, which fall together with the fine-grained particles into 13. The ash is removed by introducing air into the container 13 in the direction of the arrow 17. Recycling fine-grained particles into combustion chamber 1 contributes air supply and the pipe 11 in the direction of the arrow 18. The cyclone separator 9 is equipped with a pipe 19 for removal of the purified gas stream for further processing and disposal. In chamber 1 Combustion placed boiler 20. The table shows examples of the method for chemical processing of the process in a fluidized bed. 0.50 The average ratio of fine-grained and coarse-grained particles Surface speed, m / s Absorption Wednesday,% Fuel utilization rate,% Compiled by V. Kruglsky Editor I. Rybchenko Tekhred L. Serdyukov and Proofreader G. Reshetnik Order 5046/61 Circulation 514Subscription VNIIPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Continuation of the table 0.264 10.5 93.9 98.4 96.2
权利要求:
Claims (1) [1] METHOD FOR CHEMICAL PROCESSING OF FUEL IN A PSEUDO-FLUIDED LAYER containing a fine-grained component and an inert wear-resistant coarse-grained component with a ratio of their sizes equal to 0.0750.854, by feeding the indicated components, fuel and oxygen-containing gas into the lower part of the fluidized bed, moving the fine-grained component upward from below followed by its removal and return to the lower part of the layer, characterized in that, in order to increase profitability by reducing burnout, the fine-grained component is changed ayut through the bed at a rate 6-12 m / s,> SM ϊ 258334
类似技术:
公开号 | 公开日 | 专利标题 SU1258334A3|1986-09-15|Method of chemical treatment of fuel in pseudoliquefied layer EP0676464B1|2001-10-24|Method of and apparatus for fluidized-bed gasification and melt combustion US4444568A|1984-04-24|Method of producing fuel gas and process heat fron carbonaceous materials US4165717A|1979-08-28|Process for burning carbonaceous materials US5855631A|1999-01-05|Catalytic gasification process and system US4854249A|1989-08-08|Two stage combustion EP0384454B1|1992-09-23|Apparatus for gasifying or combusting solid carbonaceous material US4539188A|1985-09-03|Process of afterburning and purifying process exhaust gases CA1057584A|1979-07-03|Process for burning carbonaceous material US4684375A|1987-08-04|Method for gasifying a material using a circulating fluidized bed US4154581A|1979-05-15|Two-zone fluid bed combustion or gasification process US5641327A|1997-06-24|Catalytic gasification process and system for producing medium grade BTU gas US4111158A|1978-09-05|Method of and apparatus for carrying out an exothermic process EP0027280B1|1983-11-23|Process and apparatus for the conversion of agglomerating hydrocarbonaceous solid material to a more valuable gaseous product US5665319A|1997-09-09|Method of separating carbon dioxide from carbon dioxide containing gas and combustion apparatus having function to separate carbon dioxide from the combustion gas US4442080A|1984-04-10|Fluid bed SOX/NOX process--"hydrated calcine absorption" EA010277B1|2008-08-29|Method and plant for producing low-temperature coke US4648331A|1987-03-10|Process for the reduction of NOx in fluidized-bed furnaces CN1045127A|1990-09-05|The improvement of pre-reduced iron oxide US5379705A|1995-01-10|Fluidized-bed incinerator US4389381A|1983-06-21|Limestone calcination US4597774A|1986-07-01|Method for improving the operation of a fluidized bed US3847566A|1974-11-12|Fluidized bed gasification process with reduction of fines entrainment by utilizing a separate transfer line burner stage CS253732B2|1987-12-17|Process for directed reduction of materials containing iron oxide US3852216A|1974-12-03|Process for producing coarse particles of active carbon in a fluidized bed with added inert particles
同族专利:
公开号 | 公开日 DE2646860A1|1977-05-05| AU1869076A|1978-04-20| GB1523500A|1978-09-06| AU507091B2|1980-01-31| JPS5257085A|1977-05-11| HU176745B|1981-05-28| PL117560B1|1981-08-31| JPS6021769B2|1985-05-29| BE847471A|1977-02-14| FR2328507B1|1981-06-12| IT1123615B|1986-04-30| CA1069276A|1980-01-08| FR2328507A1|1977-05-20| US4084545A|1978-04-18| DE2646860C2|1993-02-11|
引用文献:
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申请号 | 申请日 | 专利标题 US62454275A| true| 1975-10-21|1975-10-21| 相关专利
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