Fluidized bed gasification furnace

Abstract

The utility model discloses a fluidized bed gasification furnace, which relates to the technical field of gasification furnaces, and comprises a furnace body, support columns fixedly connected to two sides of the furnace body, a steam unit arranged at the bottom end of the furnace body and used for providing steam, and a feeding unit arranged inside and on the side surface of the furnace body, the steam unit comprises a steam box arranged at the bottom end of the furnace body, a heating assembly arranged in the steam box and an adjusting assembly arranged at the top end of the steam box. The feeding unit comprises a bearing assembly arranged in the furnace body and an external assembly arranged on the side face of the furnace body and used for feeding. According to the fluidized bed gasification furnace, steam can be conveyed into the furnace body through the air outlet pipe after the heater is started and the valve is opened, the steam can drive pulverized coal to be dispersed in the process, the utilization efficiency of the pulverized coal is improved, the pulverized coal falling at the top end of the bearing frame is difficult to pass through the hollow circular truncated cone block, and the pulverized coal is dispersed; the reaction area of the pulverized coal and other substances is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of vaporization furnaces, in particular to a fluidized bed vaporization furnace. Background Art

[0002] Fluidized bed coal gasification is one of several important gasification methods, using pulverized coal as raw material and air (or oxygen) and steam as gasifying agents to obtain a gas product that does not contain tar or other high molecular organic liquids.

[0003] After searching, a composite water circulation type circulating fluidized bed boiler is disclosed in Chinese patent: CN206875705U, including a furnace body, an economizer, a lower drum and an upper drum are arranged at the rear side of the furnace body, the lower drum is arranged at the top of the economizer, the upper drum is located above the lower drum, the upper part of the lower drum is connected to the lower drum through a convection tube bundle, a water outlet pipe is arranged at the top of the upper drum, partitions are arranged at both ends of the upper drum, the front side of the upper drum is connected to a hot water riser located at the top of the furnace body, and an ejector device for enhancing the circulation strength of the first two water discharges of the convection tube bundle is arranged inside the lower drum. The design, installation and maintenance of the utility model are simplified, various costs are reduced, the generation of vaporization when heated strongly is avoided, the operation safety is improved, the operation cycle is extended, and the economic benefits of the user unit are improved.

[0004] Although the above scheme has achieved simplification in design, installation and maintenance, various costs have been reduced, vaporization when strongly heated has been avoided, and operational safety has been improved, the utilization efficiency of pulverized coal can be improved by taking advantage of the movement trajectory of steam during steam transportation, and the feeding trajectory of pulverized coal can also be controlled during the feeding process to disperse the pulverized coal, increase the reaction area of ​​pulverized coal and other substances, and thus improve the reaction efficiency of pulverized coal. Utility Model Content

[0005] The main purpose of the utility model is to provide a fluidized bed gasification furnace, which solves the problem of improving the utilization efficiency of pulverized coal by taking advantage of the movement trajectory of steam during the steam transportation process through the provided steam unit, and solves the problem of controlling the feeding trajectory of pulverized coal during the feeding process through the provided feeding unit, dispersing the pulverized coal, increasing the reaction area of ​​pulverized coal and other substances, and thus improving the reaction efficiency of pulverized coal.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A fluidized bed gasification furnace comprises a furnace body, and support columns fixedly connected to both sides of the furnace body, a steam unit arranged at the bottom of the furnace body for providing steam, and a feeding unit arranged inside and on the side of the furnace body;

[0008] The steam unit comprises a steam box arranged at the bottom end of the furnace body, a heating component arranged inside the steam box, and a regulating component arranged at the top end of the steam box;

[0009] The feeding unit comprises a bearing assembly arranged inside the furnace body, and an external assembly arranged on the side of the furnace body for feeding.

[0010] Preferably, the heating assembly in the steam unit includes a heater arranged at the bottom end of the steam box, a heat conducting plate arranged at the top end of the heater, and a water inlet pipe connected to one side of the steam box.

[0011] Preferably, the regulating component in the steam unit includes an outlet pipe connected to the top of the steam box, a valve arranged in the middle of the outlet pipe, a limit frame arranged at the top of the inside of the outlet pipe, and a filter screen arranged inside the limit frame.

[0012] Preferably, the top end of the gas outlet pipe in the steam unit extends to the inside of the furnace body, the mesh diameter of the filter is small, the pulverized coal does not pass through the filter, and the steam can pass through the filter.

[0013] Preferably, the bearing assembly in the feeding unit includes a bearing frame arranged at the bottom end of the furnace body, a plurality of through holes opened inside the bearing frame, a hollow truncated cone block arranged inside the through holes, and a rotating shaft fixedly connected to the middle of the bearing frame;

[0014] A rotating motor is fixedly connected to the middle part of the top end of the furnace body, and an output end of the rotating motor is fixedly connected to the rotating shaft.

[0015] Preferably, the external components in the feeding unit include a gas feeding pipe fixedly connected to one side of the furnace body, a feeding pipe fixedly connected to the other side of the furnace body, a discharge pipe connected to the top side of the furnace body, and a blocking block arranged at the top of the discharge pipe.

[0016] Preferably, the bottom end of the steam box is flush with the bottom end of the support column.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. In the utility model, by setting up a steam unit, a steam box is set below the furnace body. By starting the heater, the liquid water transported to the inside of the steam box by the water inlet pipe can be heated into steam. By opening the valve, the steam can be sent to the inside of the furnace body through the air outlet pipe. In this process, the steam will drive the pulverized coal on the filter screen and the pulverized coal at the bottom of the supporting frame and the furnace body to move upward, drive the pulverized coal to disperse, and thus improve the utilization efficiency of the pulverized coal.

[0019] 2. In the utility model, through the setting of the feeding unit, through the setting of the gas pipe and the feeding pipe, the pulverized coal is fed in through the feeding pipe, and at the same time, most of the pulverized coal falls on the top of the supporting frame under the action of gravity, and a small part of the pulverized coal falls between the supporting frame and the bottom end of the furnace body. Due to the setting of the hollow truncated cone block, the pulverized coal that falls on the top of the supporting frame is difficult to pass through the hollow truncated cone block, so the pulverized coal is dispersed, the reaction area between the pulverized coal and other substances is increased, and the reaction efficiency of the pulverized coal is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the steam box in the utility model;

[0022] Figure 3 It is a cross-sectional view of the furnace body in the utility model;

[0023] Figure 4 For this utility model Figure 3 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 5 For this utility model Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0025] In the figure:

[0026] 1. Furnace body;

[0027] 2. Support column;

[0028] 3. Steam unit; 301. Steam box; 302. Water inlet pipe; 303. Air outlet pipe; 304. Heater; 305. Heat conducting plate; 306. Valve; 307. Limiting frame; 308. Filter;

[0029] 4. Feeding unit; 401. Gas feeding pipe; 402. Feeding pipe; 403. Rotating motor; 404. Blocking block; 405. Discharging pipe; 406. Rotating shaft; 407. Carrying frame; 408. Through hole; 409. Hollow truncated cone block. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5As shown, a fluidized bed gasification furnace comprises a furnace body 1, and support columns 2 fixedly connected to both sides of the furnace body 1, a steam unit 3 arranged at the bottom end of the furnace body 1 for providing steam, and a feeding unit 4 arranged inside and on the side of the furnace body 1;

[0032] The steam unit 3 includes a steam box 301 disposed at the bottom end of the furnace body 1, a heating component disposed inside the steam box 301, and a regulating component disposed at the top end of the steam box 301;

[0033] The feeding unit 4 includes a bearing assembly arranged inside the furnace body 1 and an external assembly arranged on the side of the furnace body 1 for feeding.

[0034] The heating assembly in the steam unit 3 includes a heater 304 disposed at the bottom end of the steam box 301 , a heat conducting plate 305 disposed at the top end of the heater 304 , and a water inlet pipe 302 connected to one side of the steam box 301 .

[0035] The regulating component in the steam unit 3 includes an outlet pipe 303 connected to the top of the steam box 301, a valve 306 arranged in the middle of the outlet pipe 303, a limit frame 307 arranged at the top of the inside of the outlet pipe 303, and a filter 308 arranged inside the limit frame 307.

[0036] The top end of the gas outlet pipe 303 in the steam unit 3 extends to the inside of the furnace body 1 . The filter screen 308 has a small mesh diameter, so the pulverized coal does not pass through the filter screen 308 , but the steam can pass through the filter screen 308 .

[0037] The bearing assembly in the feeding unit 4 includes a bearing frame 407 disposed at the bottom end of the furnace body 1, a plurality of through holes 408 opened inside the bearing frame 407, a hollow truncated cone block 409 disposed inside the through holes 408, and a rotating shaft 406 fixedly connected to the middle of the bearing frame 407;

[0038] A rotating motor 403 is fixedly connected to the middle of the top of the furnace body 1 , and an output end of the rotating motor 403 is fixedly connected to a rotating shaft 406 .

[0039] The external components in the feeding unit 4 include a gas feeding pipe 401 fixedly connected to one side of the furnace body 1, a feeding pipe 402 fixedly connected to the other side of the furnace body 1, a discharge pipe 405 connected to the top side of the furnace body 1, and a blocking block 404 arranged at the top of the discharge pipe 405.

[0040] The bottom end of the steam box 301 is flush with the bottom end of the support column 2 .

[0041] The steam box 301 is arranged below the furnace body 1, and the heater 304 can be started to heat the liquid water transported to the inside of the steam box 301 by the water inlet pipe 302 into steam. The valve 306 can be opened to send the steam to the inside of the furnace body 1 through the air outlet pipe 303. In this process, the steam will drive the pulverized coal on the filter screen 308 and the pulverized coal at the bottom of the supporting frame 407 and the furnace body 1 to move upward, drive the pulverized coal to disperse, and thus improve the utilization efficiency of the pulverized coal. Example

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a fluidized bed gasification furnace comprises a furnace body 1, and support columns 2 fixedly connected to both sides of the furnace body 1, a steam unit 3 arranged at the bottom end of the furnace body 1 for providing steam, and a feeding unit 4 arranged inside and on the side of the furnace body 1;

[0043] The steam unit 3 includes a steam box 301 disposed at the bottom end of the furnace body 1, a heating component disposed inside the steam box 301, and a regulating component disposed at the top end of the steam box 301;

[0044] The feeding unit 4 includes a bearing assembly arranged inside the furnace body 1 and an external assembly arranged on the side of the furnace body 1 for feeding.

[0045] The heating assembly in the steam unit 3 includes a heater 304 disposed at the bottom end of the steam box 301 , a heat conducting plate 305 disposed at the top end of the heater 304 , and a water inlet pipe 302 connected to one side of the steam box 301 .

[0046] The regulating component in the steam unit 3 includes an outlet pipe 303 connected to the top of the steam box 301, a valve 306 arranged in the middle of the outlet pipe 303, a limit frame 307 arranged at the top of the inside of the outlet pipe 303, and a filter 308 arranged inside the limit frame 307.

[0047] The top end of the gas outlet pipe 303 in the steam unit 3 extends to the inside of the furnace body 1 . The filter screen 308 has a small mesh diameter, so the pulverized coal does not pass through the filter screen 308 , but the steam can pass through the filter screen 308 .

[0048] The bearing assembly in the feeding unit 4 includes a bearing frame 407 disposed at the bottom end of the furnace body 1, a plurality of through holes 408 opened inside the bearing frame 407, a hollow truncated cone block 409 disposed inside the through holes 408, and a rotating shaft 406 fixedly connected to the middle of the bearing frame 407;

[0049] A rotating motor 403 is fixedly connected to the middle of the top of the furnace body 1 , and an output end of the rotating motor 403 is fixedly connected to a rotating shaft 406 .

[0050] The external components in the feeding unit 4 include a gas feeding pipe 401 fixedly connected to one side of the furnace body 1, a feeding pipe 402 fixedly connected to the other side of the furnace body 1, a discharge pipe 405 connected to the top side of the furnace body 1, and a blocking block 404 arranged at the top of the discharge pipe 405.

[0051] The bottom end of the steam box 301 is flush with the bottom end of the support column 2 .

[0052] By setting the gas adding pipe 401 and the feeding pipe 402, the pulverized coal is fed in through the feeding pipe 402. At the same time, most of the pulverized coal falls on the top of the supporting frame 407 under the action of gravity, and a small part of the pulverized coal falls between the supporting frame 407 and the bottom end of the furnace body 1. Due to the setting of the hollow truncated cone block 409, the pulverized coal that falls on the top of the supporting frame 407 is difficult to pass through the hollow truncated cone block 409. In this way, the pulverized coal is dispersed, the reaction area between the pulverized coal and other substances is increased, and the reaction efficiency of the pulverized coal is improved.

[0053] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fluidized bed gasification furnace, comprising a furnace body (1), and support columns (2) fixedly connected to both sides of the furnace body (1), characterized in that: It also includes a steam unit (3) arranged at the bottom of the furnace body (1) for providing steam, and a feeding unit (4) arranged inside and on the side of the furnace body (1); The steam unit (3) comprises a steam box (301) arranged at the bottom end of the furnace body (1), a heating component arranged inside the steam box (301), and a regulating component arranged at the top end of the steam box (301); The feeding unit (4) comprises a bearing component arranged inside the furnace body (1), and an external component arranged on the side of the furnace body (1) for feeding.

2. The fluidized bed gasification furnace according to claim 1, characterized in that: The heating component in the steam unit (3) comprises a heater (304) arranged at the bottom end of the steam box (301), a heat conduction plate (305) arranged at the top end of the heater (304), and a water inlet pipe (302) arranged on one side of the steam box (301).

3. The fluidized bed gasification furnace according to claim 2, characterized in that: The regulating component in the steam unit (3) comprises an air outlet pipe (303) connected to the top of the steam box (301), a valve (306) arranged in the middle of the air outlet pipe (303), a limit frame (307) arranged at the top of the air outlet pipe (303), and a filter screen (308) arranged inside the limit frame (307).

4. The fluidized bed gasification furnace according to claim 3, characterized in that: The top end of the gas outlet pipe (303) in the steam unit (3) extends to the interior of the furnace body (1).

5. The fluidized bed gasification furnace according to claim 4, characterized in that: The bearing assembly in the feeding unit (4) comprises a bearing frame (407) arranged at the bottom end of the furnace body (1), a plurality of through holes (408) opened inside the bearing frame (407), a hollow truncated cone block (409) arranged inside the through holes (408), and a rotating shaft (406) fixedly connected to the middle of the bearing frame (407); A rotating motor (403) is fixedly connected to the middle of the top end of the furnace body (1), and an output end of the rotating motor (403) is fixedly connected to a rotating shaft (406).

6. The fluidized bed gasification furnace according to claim 5, characterized in that: The external components in the feeding unit (4) include a gas feeding pipe (401) fixedly connected to one side of the furnace body (1), a feeding pipe (402) fixedly connected to the other side of the furnace body (1), a discharge pipe (405) connected to one side of the top end of the furnace body (1), and a blocking block (404) arranged at the top end of the discharge pipe (405).

7. The fluidized bed gasification furnace according to claim 6, characterized in that: The bottom end of the steam box (301) is flush with the bottom end of the support column (2).

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