Water heating system

Abstract

The utility model discloses a water heating system which comprises a gasification furnace, a black water filter, a Venturi tube, a first grey water circulating pump and a second grey water circulating pump, the first grey water circulating pump and the second grey water circulating pump are used for pumping black water of the carbon washing tower to the black water filter; two sides of the black water filter are respectively provided with a side water inlet and a side water outlet, the bottom of the black water filter is provided with a bottom water outlet, and black water of the carbon washing tower enters the black water filter from the side water inlet, then enters the gasification furnace from the side water inlet, and directly enters the Venturi tube from the bottom water outlet; the gasification furnace is communicated with a water gas outlet pipe, the water gas outlet pipe is communicated with the Venturi pipe, and the water gas outlet pipe is mixed with water filtered by the black water filter in the Venturi pipe for humidification. According to the structure, the whole system can work stably without being blocked for a long time in the water gas production working process.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot water systems, and particularly relates to a hot water system. Background Technology

[0002] my country's energy industry structure has always been characterized by "oil shortage, gas scarcity, and coal oversupply," making clean coal gasification technology a crucial technology.

[0003] As coal gasification gradually shifts towards large-scale operations, fluidized bed gasification technology is being used more and more widely. Due to its lower equipment cost, simple structure, and ease of maintenance, the direct quench process for syngas is the most commonly used in the industry, with representative examples including Texaco gasifiers, multi-component slurry gasifiers, four-nozzle gasifiers, GSP gasifiers, and many other types of gasifiers.

[0004] The gasifier requires quench water during operation, which comes from the black water in the carbon washing tower. Because the black water in the carbon washing tower contains a small amount of carbon slag, a black water filter is usually installed on the quench water pipeline before the quench ring to prevent large-sized carbon slag from clogging the quench ring.

[0005] However, after a period of use, a large amount of coal slag accumulates at the bottom of the black water filter, causing it to malfunction and severely affecting the filtration of the quench water, resulting in severe blockage of the quench ring in the gasifier.

[0006] Meanwhile, the black water from the carbon washing tower is often at a relatively low temperature. Consequently, when the filtered low-temperature black water from the carbon washing tower enters the quench chamber of the gasifier, the low temperature results in a low water-to-gas ratio between the black water and the water gas, thus leading to poor water gas production efficiency. Utility Model Content

[0007] Based on the above background, the purpose of this utility model is to provide a hot water system.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A hot water system includes a gasifier, a black water filter, a venturi tube, a first ash water circulation pump, and a second ash water circulation pump;

[0010] The first and second ash water circulation pumps pump the black water from the carbon washing tower to the black water filter.

[0011] The black water filter has a side inlet and a side outlet on both sides, and a bottom outlet at the bottom. The black water from the carbon washing tower enters the black water filter through the side inlet and then enters the gasifier through the side inlet, and directly enters the venturi tube through the bottom outlet.

[0012] The gasifier is connected to a water gas outlet pipe, which is connected to a venturi tube, where the water filtered by the black water filter is mixed and humidified.

[0013] Preferably, the inlet of the first grey water circulating pump is connected to a first pipe, and the first pipe is connected to a second pipe;

[0014] The outlet of the second pipe is connected to the inlet of the second grey water circulation pump;

[0015] The outlet of the second grey water circulation pump is connected to a third pipe;

[0016] The outlet of the first ash water circulation pump is connected to a fourth pipe, and the outlet of the third pipe is connected to the fourth pipe.

[0017] The outlet of the third pipe is connected to the side inlet of the black water filter, and the side outlet of the black water filter is connected to the sixth pipe, the outlet of the sixth pipe being connected to the inlet of the gasifier quench chamber.

[0018] The bottom outlet of the black water filter is connected to a fifth pipe, which is connected to the inlet end of the venturi tube.

[0019] Preferably, a differential pressure transmitter is installed between the side inlet and the side outlet of the black water filter;

[0020] The two ends of the differential pressure transmitter are respectively installed on the fourth and sixth pipelines;

[0021] Flow transmitters are installed on the sixth and fifth pipelines respectively.

[0022] Preferably, a first flow control valve and a second flow control valve are respectively installed on the sixth pipe and the fifth pipe;

[0023] The first flow control valve and the second flow control valve are located at the liquid outlet of the flow transmitter.

[0024] Preferably, a heat exchange mechanism is installed on the side outlet of the black water filter;

[0025] The outlet of the heat exchange mechanism is connected to the inlet of the sixth pipe.

[0026] Preferably, the heat exchange mechanism includes a preheating sleeve, and mounting flanges are fixedly connected to both ends of the preheating sleeve;

[0027] The top side of the preheating sleeve is connected to a preheating hot water inlet pipe, and the bottom side of the preheating sleeve is connected to a preheating hot water outlet pipe.

[0028] A preheating spike tube structure is installed inside the preheating tube sleeve.

[0029] Preferably, the preheating ratchet structure includes an inlet seat and an outlet seat fixedly connected inside the preheating tube sleeve cavity. The inlet seat and the outlet seat divide the preheating tube sleeve cavity into a preheating chamber. The preheating hot water inlet pipe and the preheating hot water outlet pipe are connected to the preheating chamber.

[0030] The inlet seat has several inlet holes, the outlet seat has several outlet holes, and several heat pipe structures are connected between the inlet seat and the outlet seat.

[0031] Preferably, the heat pipe includes a long heat pipe, and a plurality of heat plate structures are fixedly connected to the long heat pipe. The heat plate structure includes inclined heat plates, and the inclination direction of the heat plates is opposite to the flow direction of the fluid.

[0032] The inner end of the heat plate is located inside the lumen of the long heat pipe.

[0033] Preferably, the long heat pipe and the heat plate are made of copper.

[0034] This utility model has the following beneficial effects:

[0035] 1. Through the gasifier, black water filter, venturi tube, first ash water circulation pump, second ash water circulation pump, and pipeline structure, the black water from the washing tower is effectively filtered and supplied to the gasifier for quenching during operation. Furthermore, by improving the black water filter, it is ensured that the black water filter does not clog for a long time, thus guaranteeing the smooth operation of the entire process and improving the efficiency of the process.

[0036] 2. The heat exchange mechanism employs multiple layers of serrated heating plates distributed along the length of the long heat pipe, with each layer containing multiple serrated heating plates around its circumference. This design ensures that when hot water enters from the top right side of the preheating tube sleeve, it flows from right to left. The serrated heating plates are designed to be tilted in the opposite direction to the fluid flow, which increases the effectiveness of the fluid in heating the serrated heating plates and reduces the scouring and damage caused by the fluid to the serrated heating plates.

[0037] When black water flows into each long heat pipe, its temperature rises rapidly under the auxiliary heating of the heat pipe itself and multiple spiked plates. Specifically, the spiked plate structure design increases the total contact area with the fluid during heating, improving heat exchange efficiency. Preheating the black water significantly increases its temperature, resulting in a substantial increase in the water-to-gas ratio when the black water enters the gasifier. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0040] Figure 2 This is a schematic diagram of the structure of the heat exchange mechanism installed in the black water filter in this embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the dispersed structure of the heat exchange mechanism in an embodiment of this utility model;

[0042] Figure 4 This is a schematic diagram of the structure of the heat-generating plate and the long heat pipe in the embodiment of this utility model;

[0043] Figure 5 This is a schematic diagram of the overall structure of the heat exchange mechanism in an embodiment of this utility model.

[0044] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0048] Example 1

[0049] like Figure 1-5 As shown, a hot water system includes a gasifier 5, a black water filter 3, a venturi tube 4, a first ash water circulation pump 1, and a second ash water circulation pump 2.

[0050] The first ash water circulation pump 1 and the second ash water circulation pump 2 pump the black water from the carbon washing tower to the black water filter 3 (the main structure of the black water filter 3 is a conventional black water filter structure disclosed in the prior art, including a filter housing and a filter structure 35 installed in the filter housing, the filter structure 35 is the same filter structure used in existing black water filters).

[0051] The black water filter 3 has a side inlet 33 and a side outlet 34 on both sides, and a bottom outlet 32 ​​at the bottom. Black water from the carbon washing tower enters the black water filter 3 through the side inlet 33 and then enters the gasifier 5 through the side inlet 33. It then directly enters the venturi tube 4 through the bottom outlet 32. By draining water from the bottom outlet 32, the coal slag deposited at the bottom of the black water filter 3 is continuously flushed and cleaned by the fluid, ensuring the filtration efficiency of the black water filter 3 and preventing clogging.

[0052] The gasifier 5 is connected to a water gas outlet pipe 17, which is connected to a venturi tube 4. The water gas outlet pipe 17 mixes and humidifies with the water filtered by the black water filter 3 inside the venturi tube 4.

[0053] Specifically, the inlet of the first ash water circulation pump 1 is connected to a first pipe 11, and the first pipe 11 is connected to a second pipe 12; the outlet of the second pipe 12 is connected to the inlet of the second ash water circulation pump 2; the outlet of the second ash water circulation pump 2 is connected to a third pipe 13; the outlet of the first ash water circulation pump 1 is connected to a fourth pipe 14, and the outlet of the third pipe 13 is connected to the fourth pipe 14; the outlet of the third pipe 13 is connected to the side inlet 33 of the black water filter 3, and the side outlet 34 of the black water filter 3 is connected to a sixth pipe 16, and the outlet of the sixth pipe 16 is connected to the inlet of the quench chamber of the gasifier 5; the bottom outlet 32 ​​of the black water filter 3 is connected to a fifth pipe 15, and the fifth pipe 15 is connected to the inlet of the venturi tube 4.

[0054] During operation, the first ash water circulation pump 1 and the second ash water circulation pump 2 pump black water through the above-mentioned pipeline system into the black water filter 3 for filtration, and then into the gasifier 5. After being discharged from the bottom of the black water filter 3, the black water enters the venturi tube 4 and mixes with the gas pumped out of the gasifier 5 to increase humidity.

[0055] A differential pressure transmitter 8 is installed between the side inlet 33 and the side outlet 34 of the aforementioned black water filter 3; specifically, the two ends of the differential pressure transmitter 8 are respectively installed on the fourth pipe 14 and the sixth pipe 16. The differential pressure transmitter 8 monitors changes in water pressure.

[0056] Flow transmitters 6 are installed on the sixth pipe 16 and the fifth pipe 15 respectively. The flow transmitters 6 monitor changes in fluid flow rate. A first flow control valve 9 and a second flow control valve 7 are installed on the sixth pipe 16 and the fifth pipe 15 respectively; the first flow control valve 9 and the second flow control valve 7 are located at the outlet end of the flow transmitters 6. The flow rate is adjusted according to the monitored fluid velocity and pressure using the flow control valves.

[0057] Example 2

[0058] like Figure 1-5 As shown, in this embodiment, based on the structure of Embodiment 1, a heat exchange mechanism 31 is installed on the side outlet 34 of the black water filter 3. The heat exchange mechanism 31 preheats the black water that is about to enter the gasifier 5. After preheating, the temperature of the black water increases significantly, which can further improve the water-to-gas ratio in the gasifier during operation.

[0059] Specifically, the outlet of the heat exchange mechanism 31 is connected to the inlet of the sixth pipe 16.

[0060] The heat exchange mechanism 31 includes a preheating sleeve 311, and the two ends of the preheating sleeve 311 are respectively fixedly connected to mounting flanges 312 (the mounting flange 312 at the water inlet end is installed on the side outlet pipe on the side outlet 34 of the black water filter 3).

[0061] Meanwhile, a preheating hot water inlet pipe 313 is connected to the top right side of the preheating sleeve 311, and a preheating hot water outlet pipe 315 is connected to the bottom left side of the preheating sleeve 311.

[0062] During operation, the preheated hot water inlet pipe 313 is connected to an external hot water pipe in the existing manner, so that heated water is pumped into the preheating sleeve 311. After heat exchange, the low-temperature water is pumped back to the external return water pipe from the preheated hot water outlet pipe 315. This allows for heating by circulating water pumped into the preheating sleeve 311 during operation.

[0063] Specifically, a preheating ratchet structure 314 is installed inside the preheating sleeve 311. The heating efficiency is improved by using the preheating ratchet structure 314.

[0064] Specifically, the preheating ratchet structure 314 includes an inlet seat 3142 and an outlet seat 3141 fixedly connected in the cavity of the preheating sleeve 311 (cavities are opened in the inlet seat 3142 and the outlet seat 3141 for diverting and merging flow). The inlet seat 3142 and the outlet seat 3141 divide the cavity of the preheating sleeve 311 into a sealed preheating cavity, and the preheating hot water inlet pipe and the preheating hot water outlet pipe are connected to the preheating cavity.

[0065] Meanwhile, the inlet seat 3142 is provided with several inlet holes, and the outlet seat 3141 is provided with several outlet holes.

[0066] Black water enters the inlet hole and is split in the inlet seat 3142, then merges and is discharged from the outlet seat 3141 and the preheating sleeve 311.

[0067] Specifically, a number of heat pipe structures 3143 are connected between the aforementioned inlet seat 3142 and outlet seat 3141.

[0068] The thorn heat pipe includes a long heat pipe 31431, on which several thorn heat plate structures are fixedly connected. The thorn heat plate structure includes an inclined thorn heat plate 31432, the inclination direction of which is opposite to the flow direction of the fluid.

[0069] Specifically, the spinneret 31432 is distributed in multiple layers along the length of the long heat pipe 31431, with multiple spinnerets 31432 distributed around the periphery of each layer.

[0070] When hot water enters from the top right side of the preheating tube sleeve 311, the hot water flows from right to left. The thorn heating plate 31432 is designed to be tilted in the opposite direction to the fluid. This increases the effect of the fluid heating the thorn heating plate 31432 and reduces the scouring and damage of the fluid to the thorn heating plate 31432.

[0071] Specifically, when black water flows into each long heat pipe 31431, its temperature rapidly rises with the assistance of heat exchange through the body of the long heat pipe 31431 and multiple spur heat plates 31432. Specifically, the spur heat plate 31432's structural design firstly increases the total contact area with the fluid during heating, improving heat exchange efficiency; secondly, to further enhance heat exchange, the inner end of the spur heat plate 31432 is located within the cavity of the long heat pipe 31431.

[0072] Specifically, during the processing, through holes are made on the long heat pipe 31431, and after inserting the spinneret heat plate 31432, it is sealed and welded. In this way, the rapid heat exchange through a large number of spinneret heat plates 31432 is further increased.

[0073] The aforementioned long heat pipe 31431 and the heat plate 31432 are made of copper.

[0074] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A hot water system, characterized by, The gasifier, the black water filter, the venturi, the first grey water circulating pump and the second grey water circulating pump are included. The first grey water circulating pump and the second grey water circulating pump pump the carbon washing tower black water to the black water filter. The black water filter has a side inlet and a side outlet on two sides respectively, and a bottom outlet on the bottom, and the carbon washing tower black water enters the black water filter from the side inlet, enters the gasifier from the side inlet, and directly enters the venturi from the bottom outlet. The gasifier is connected with a water gas outlet pipe, and the water gas outlet pipe is connected with the venturi and mixes with the water filtered by the black water filter in the venturi.

2. The water heating system of claim 1, wherein, The first pipe is connected with the water inlet end of the first grey water circulating pump, and the second pipe is connected with the first pipe. The water outlet end of the second pipe is connected with the water inlet end of the second grey water circulating pump. The third pipe is connected with the water outlet end of the second grey water circulating pump. The fourth pipe is connected with the water outlet end of the first grey water circulating pump, and the water outlet end of the third pipe is connected with the fourth pipe. The water outlet end of the third pipe is connected with the side inlet of the black water filter, the side outlet of the black water filter is connected with the sixth pipe, and the water outlet end of the sixth pipe is connected with the water inlet end of the quenching chamber of the gasifier. The bottom outlet of the black water filter is connected with the fifth pipe, and the fifth pipe is connected with the water inlet end of the venturi.

3. The water heating system of claim 2, wherein, A differential pressure transmitter is arranged between the side inlet and the side outlet of the black water filter. The differential pressure transmitter is arranged on the fourth pipe and the sixth pipe respectively. Flow transmitters are arranged on the sixth pipe and the fifth pipe respectively.

4. The water heating system of claim 3, wherein First and second flow control valves are arranged on the sixth pipe and the fifth pipe respectively. The first and second flow control valves are arranged at the liquid outlet ends of the flow transmitters respectively.

5. The water heating system of claim 3, wherein, A heat exchange mechanism is arranged on the side outlet of the black water filter. The water outlet end of the heat exchange mechanism is connected with the water inlet end of the sixth pipe.

6. The water heating system of claim 5, wherein, The heat exchange mechanism comprises a preheating pipe sleeve, and the two ends of the preheating pipe sleeve are fixedly connected with mounting flanges respectively. A preheating water inlet pipe is connected with one side of the top of the preheating pipe sleeve, and a preheating water outlet pipe is connected with the other side of the bottom of the preheating pipe sleeve. A preheating serrated pipe structure is arranged in the preheating pipe sleeve.

7. The water heating system of claim 6, wherein, The preheating serrated pipe structure comprises an inlet seat and an outlet seat fixedly connected in the pipe cavity of the preheating pipe sleeve, and the inlet seat and the outlet seat separate the pipe cavity of the preheating pipe sleeve into a preheating cavity, and the preheating water inlet pipe and the preheating water outlet pipe are connected with the preheating cavity. A plurality of inlet holes are formed in the inlet seat, a plurality of outlet holes are formed in the outlet seat, and a plurality of serrated heat pipes are connected between the inlet seat and the outlet seat.

8. The water heating system of claim 7, wherein, The serrated heat pipe comprises a long heat pipe, a plurality of serrated heat plate structures are fixedly connected to the long heat pipe, the serrated heat plate structure comprises an inclined serrated heat plate, and the inclination direction of the serrated heat plate is opposite to the flow direction of the fluid. The inner end of the serrated heat plate is located in the pipe cavity of the long heat pipe.

9. The water heating system of claim 8, wherein, The long heat pipe and the serrated heat plate are made of red copper.

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