Coal gas waste heat power generation device

Abstract

The utility model discloses a coal gas waste heat power generation device which comprises a base, a power generation assembly is arranged on the top of the base and comprises a steam box and a steam turbine which are sequentially embedded into the base forwards in the transverse direction, the transverse front end of the steam turbine is fixedly connected with a power generator, and a connecting pipe is arranged on the side wall of the steam box. The tail end of the connecting pipe is communicated with the steam turbine; a waste heat utilization assembly is fixedly connected to the longitudinal front side wall of the base. Conduction liquid is input into the fixed cylinder through a control valve at the top of the fixed cylinder, heat of waste heat coal gas in the smoke pipe is dissipated and transmitted into the conduction liquid at the moment, then the heat is input into the water conveying pipe through the conduction liquid, cold water in the water conveying pipe is preheated, and the vaporization speed of water flow in the steam box can be effectively increased; therefore, heat emitted by the waste heat coal gas is fully utilized, and the technical problem that in the prior art, the conversion efficiency of a coal gas waste heat power generation device is not high, and consequently the power generation efficiency of the whole coal gas waste heat power generation device is reduced is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal gas waste heat power generation technical field relates to power generation device, concretely is a kind of coal gas waste heat power generation device. BACKGROUND

[0002] Industrial coal gas waste heat power generation is a kind of technology using the waste heat generated in industrial production process, a large amount of waste heat can be generated in the process of large-scale industrial production, industrial processing, these waste heat can be recycled through specific equipment and system, and converted into electrical energy, can utilize the high temperature and high pressure gas generated by gas combustion to drive generator to generate electricity.

[0003] For example, the publication number CN221628240U is a coke oven raw coal gas waste heat power generation device, although the water consumption in the evaporator is reduced in the process of recycling coke oven raw coal gas waste heat, but the waste heat gas inevitably appears part of heat loss in the process of flowing in pipeline, with the continuous flow of coal gas in pipeline, this heat loss phenomenon will continue to occur, which will reduce the heat utilization rate of coal gas to a certain extent, thereby affecting the power generation efficiency of the whole coal gas waste heat power generation equipment. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a coal gas waste heat power generation device to solve the technical problem that the conversion efficiency of the coal gas waste heat power generation device in the prior art is not high, resulting in the power generation efficiency of the whole coal gas waste heat power generation equipment is reduced.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme to realize:

[0006] A kind of coal gas waste heat power generation device, including base, the top of the base is provided with power generation component, the power generation component includes steam box and steam turbine embedded in the base in turn along transverse direction, the transverse front end of the steam turbine is fixedly connected with generator, the side wall of the steam box is provided with connecting pipe, the tail end of the connecting pipe is communicated with the steam turbine;The longitudinal front side wall of the base is fixedly connected with waste heat utilization component;

[0007] The waste heat utilization component includes fixed cylinder fixedly arranged on the longitudinal front side wall of base, multiple fixed rings are arranged at equal intervals in the fixed cylinder, multiple water delivery pipes are uniformly distributed on the inner wall of multiple fixed rings, a flue gas pipe is arranged at the center of multiple fixed rings, one end of the flue gas pipe is sequentially communicated with the longitudinal front side wall of base and steam box and is provided with a heat exchange disc, the other side of the heat exchange disc is provided with multiple heat exchange pipes, and the tail end of multiple heat exchange pipes is commonly communicated with a collection disc;

[0008] The ends of the plurality of water pipes pass through the longitudinal front side walls of the base and the steam box in sequence and communicate with the interior of the steam box.

[0009] A plurality of connecting holes are formed in the end faces of the plurality of fixing rings except the fixing rings located at the two ends of the fixing cylinder.

[0010] The control valves are fixedly connected to the outer walls of the fixing cylinder at the upper and lower sides, and the two control valves are located close to the two fixing rings at the two ends of the fixing cylinder.

[0011] The utility model also comprises the following features:

[0012] The other side of the collecting disc is fixedly connected with an exhaust pipe in sequence, and the other end of the exhaust pipe passes through the longitudinal rear side walls of the steam box and the base in sequence.

[0013] The steam inlet is formed in the top of the steam turbine, and the steam inlet communicates with the end of the connecting pipe.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] (I) In the utility model, the control valve at the top of the fixing cylinder inputs the conducting liquid into the fixing cylinder, at this time, the waste heat gas heat in the flue gas pipe is emitted into the conducting liquid, and then the heat is input into the water pipe through the conducting liquid, so that the cold water in the water pipe is preheated, the vaporization speed of the water flow in the steam box can be effectively accelerated, the heat emitted by the waste heat gas is fully utilized, and the technical problem that the conversion efficiency of the coal gas waste heat power generation device is not high in the prior art, resulting in the power generation efficiency of the whole coal gas waste heat power generation equipment is reduced.

[0016] (II) In the utility model, the length of the fixing cylinder can be set according to the length of the flue gas pipe, so that the heat loss caused by the long transmission process of the flue gas is prevented, and the power generation efficiency of the coal gas waste heat power generation equipment is improved. DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a sectional structure schematic diagram of the utility model Figure 1 ;

[0019] Figure 3 It is a sectional structure schematic diagram of the utility model Figure 2 ;

[0020] Figure 4 It is a water pipe structure schematic diagram of the utility model;

[0021] Figure 5 It is a fixing ring structure schematic diagram of the utility model.

[0022] The meanings of the labels in the diagram are as follows: 1-base, 2-power generation component, 3-waste heat recovery component;

[0023] 21-Steam turbine, 22-Generator, 23-Steam inlet, 24-Steam box, 25-Connecting pipe;

[0024] 31-Fixed cylinder, 32-Fixed ring, 33-Flue gas pipe, 34-Water supply pipe, 35-Connecting hole, 36-Control valve, 37-Heat exchange plate, 38-Heat exchange tube, 39-Collection plate, 310-Exhaust pipe.

[0025] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, all components in this utility model are components known in the art.

[0027] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0028] This utility model provides a waste heat power generation device for coal gas, such as Figures 1 to 5 As shown, the device includes a base 1, and a power generation assembly 2 is provided on the top of the base 1. The power generation assembly 2 includes a steam box 24 and a steam turbine 21 that are sequentially embedded in the base 1 in a horizontal forward direction. A generator 22 is fixedly connected to the horizontal front end of the steam turbine 21. A connecting pipe 25 is provided on the side wall of the steam box 24, and the end of the connecting pipe 25 is connected to the steam turbine 21. A waste heat utilization assembly 3 is fixedly connected to the longitudinal front side wall of the base 1.

[0029] The waste heat utilization component 3 includes a fixed cylinder 31 fixedly installed on the longitudinal front side wall of the base 1. Multiple fixed rings 32 are evenly spaced inside the fixed cylinder 31. Multiple water pipes 34 are evenly distributed on the inner wall of the multiple fixed rings 32. A flue gas pipe 33 is installed at the center of the multiple fixed rings 32. One end of the flue gas pipe 33 passes through the longitudinal front side wall of the base 1 and the steam box 24 in sequence and is connected to a heat exchange plate 37. Multiple heat exchange tubes 38 are connected to the other side of the heat exchange plate 37. The ends of the multiple heat exchange tubes 38 are connected to a collection plate 39.

[0030] The ends of multiple water pipes 34 pass through the longitudinal front sidewall of the base 1 and the steam box 24 in sequence, and are connected to the interior of the steam box 24.

[0031] In addition to the fixing rings 32 located at both ends of the fixing cylinder 31, multiple corresponding connection holes 35 are provided on the end faces of the multiple fixing rings 32.

[0032] Control valves 36 are fixedly connected to the upper and lower outer walls of the fixed cylinder 31, and the two control valves 36 are respectively close to the two fixed rings 32 located at both ends of the fixed cylinder 31.

[0033] In the above technical solution, waste heat gas is first introduced into flue gas pipe 33, and cold water is simultaneously introduced into water supply pipe 34. The waste heat gas in flue gas pipe 33 enters heat exchange plate 37, and is then introduced into heat exchange tube 38 via heat exchange plate 37. Heat is then transferred to water supply pipe 34 via a conductive liquid, preheating the cold water in water supply pipe 34. Specifically, heat exchange tube 38 transfers heat to the water flow in steam box 24, causing the water flow to heat up and convert into steam. Simultaneously, conductive liquid is introduced into fixed cylinder 31 via control valve 36, and the conductive liquid flows through connection hole 3... 5 fills the space between multiple fixed rings 32. At this time, the heat of the waste gas in the flue gas pipe 33 is dissipated and transferred into the conductive liquid. Then, the heat is transferred into the water pipe 34 through the conductive liquid, so that the cold water in the water pipe 34 is preheated, which effectively accelerates the vaporization speed of the water flow in the steam box 24. This allows the heat dissipated by the waste gas to be fully utilized. The length of the fixed cylinder 31 can be set according to the length of the flue gas pipe 33 to prevent some heat loss due to the long transmission process of the flue gas, thereby improving the power generation efficiency of the waste gas power generation equipment.

[0034] An exhaust pipe 310 is fixedly connected to the other side of the collection tray 39, and the other end of the exhaust pipe 310 passes through the longitudinal rear sidewall of the steam box 24 and the base 1 in sequence.

[0035] In the above technical solution, the exhaust pipe 310 is mainly used to discharge the heat-treated coal gas in a timely manner.

[0036] The steam inlet 23 is opened at the top of the steam turbine 21, and the steam inlet 23 is connected to the end of the connecting pipe 25.

[0037] In the above technical solution, the steam inlet 23 is used to connect the connecting pipe 25 and the steam turbine 21.

Claims

1. A waste heat power generation device for coal gas, comprising a base (1), wherein a power generation assembly (2) is disposed on the top of the base (1), the power generation assembly (2) comprising a steam tank (24) and a steam turbine (21) sequentially embedded in the base (1) in a transverse forward direction, wherein a generator (22) is fixedly connected to the transverse front end of the steam turbine (21), and a connecting pipe (25) is disposed on the side wall of the steam tank (24), the end of the connecting pipe (25) being connected to the steam turbine (21); characterized in that, A waste heat utilization component (3) is fixedly connected to the longitudinal front side wall of the base (1); The waste heat utilization component (3) includes a fixed cylinder (31) fixedly installed on the longitudinal front side wall of the base (1). Multiple fixed rings (32) are evenly spaced inside the fixed cylinder (31). Multiple water pipes (34) are uniformly distributed on the inner walls of the multiple fixed rings (32). A flue gas pipe (33) is installed at the center of the multiple fixed rings (32). One end of the flue gas pipe (33) passes through the longitudinal front side wall of the base (1) and the steam box (24) in sequence and is connected to a heat exchange plate (37). Multiple heat exchange tubes (38) are connected to the other side of the heat exchange plate (37). A collection plate (39) is connected to the ends of the multiple heat exchange tubes (38). The ends of the plurality of water pipes (34) pass through the longitudinal front sidewall of the base (1) and the steam box (24) in sequence, and communicate with the interior of the steam box (24); In addition to the fixing rings (32) located at both ends of the fixing cylinder (31), multiple corresponding connection holes (35) are provided on the end faces of the multiple fixing rings (32). Control valves (36) are fixedly connected to the upper and lower outer walls of the fixed cylinder (31), and the two control valves (36) are respectively close to the two fixing rings (32) located at both ends of the fixed cylinder (31).

2. The waste heat power generation device based on gas according to claim 1, characterized in that, The other side of the collection tray (39) is fixedly connected to an exhaust pipe (310), and the other end of the exhaust pipe (310) passes through the longitudinal rear sidewall of the steam box (24) and the base (1) in sequence.

3. The waste heat power generation device based on gas according to claim 1, characterized in that, The steam inlet (23) is opened at the top of the steam turbine (21), and the steam inlet (23) is connected to the end of the connecting pipe (25).

Images