Post-ignition oil shale circulating fluid bed (CFB) boiler
A shale and boiler technology, applied in the field of pure fuel oil shale CFB boilers, can solve the problem that the boiler cannot be well adapted
Active Publication Date: 2019-09-27
自贡华西能源工业有限公司
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Problems solved by technology
[0004] The present invention aims to provide a pure fuel oil shale CFB boiler to solve the problem that the existing boilers cannot be well adapted to oil shale with small particles (such as below 12mm) and semi-coke, a by-product of oil shale carbonization, is used as fuel. question
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[0028] see figure 1 , figure 2 , image 3 and Figure 4 , the present embodiment provides a pure fuel oil shale CFB boiler 10, which includes a furnace 11, an ignition device 16, a separator 12, a tail shaft flue 13 and a feeding device 15. Pure fuel oil shale CFB boiler 10 uses small particle shale and / or shale semi-coke, a by-product of dry distillation of oil shale, as fuel; the upper part of the side of the furnace 11 is connected to the upper part of the side of the separator 12 through the connecting cylinder 40; the tail shaft The flue 13 communicates with the upper part of the separator 12 through an L-shaped pipe 46; the L-shaped pipe 46 includes a horizontal pipe 44 and a central cylinder 45 that communicate with each other; the central cylinder 45 is inserted into the separation chamber Q1 of the separator 12 from top to bottom; Also, the position of the inlet K1 of the center cylinder 45 is higher than the lower end of the connection cylinder 40 .
[0029] Opt...
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The invention relates to the field of boilers, and provides a post-ignition oil shale circulating fluid bed (CFB) boiler aiming at solving the problems that an existing boiler cannot well adapt to using short-grained oil shale and by-product semicoke obtained after oil shale dry distillation as fuels. The post-ignition oil shale CFB boiler comprises a hearth, an ignition device, a separator, a tail vertical shaft flue and a feeding device, and is characterized in that the post-ignition oil shale CFB boiler adopts the short-grained oil shale and / or the by-product shale semicoke obtained after oil shale dry distillation as fuels; the upper part of the side surface of the hearth communicates to the upper part of the side surface of the separator through a connecting cylinder; the tail vertical shaft flue communicates to the upper part of the separator through an L-shaped pipe; the L-shaped pipe comprises a cross pipe and a center cylinder communicating with each other; the center cylinder is inserted into a separation chamber of the separator from top to bottom; and the position of an inlet of the center cylinder is higher than the lower end of the connecting cylinder. The post-ignition oil shale CFB boiler provided by the invention has the beneficial effects that the recovery of combustible fly ash can be greatly realized, and the speed of adhering to and blocking a channel through the fly ash is retarded.
Description
technical field [0001] The invention relates to the field of boilers, in particular to a pure fuel oil shale CFB boiler. Background technique [0002] Oil shale is a solid combustible organic mineral body with high ash content and low calorific value. It is in the form of fine-grained black or brown flakes. Low-temperature dry distillation can obtain shale oil similar to natural petroleum. From the perspective of reserves and utilization value, oil shale is an important alternative energy source with great development prospects. [0003] Existing boilers are not well adapted to the use of oil shale with small particles (such as below 12mm) and semi-coke, a by-product of oil shale carbonization, as fuel. Contents of the invention [0004] The present invention aims to provide a pure fuel oil shale CFB boiler to solve the problem that the existing boilers cannot be well adapted to oil shale with small particles (such as below 12mm) and semi-coke, a by-product of oil shale c...
Claims
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CPCF22B31/0069
Inventor 韩大彬丁乾彬李小龙任亚萍康钦福胡柳英刘训志钟思梅
Owner 自贡华西能源工业有限公司