Gasification ash water efficient conveying device

Abstract

A liquid outlet of a vacuum flash evaporator is sequentially connected with an ash water pump, an ash water cooler and an ash water separator, a flocculant inlet pipe is connected with an inlet of the ash water separator of a first ash water recovery pipe, and an outlet of the ash water cooler is further connected with a liquid outlet of the ash water separator through an ash water backwashing pipe. And the ash water cooler outlet pipe, the ash water backwashing pipe, the flocculant inlet pipe and the first ash water recovery pipe are all provided with valves. The ash water backwashing pipe which is parallel to the outlet pipe of the ash water cooler and is connected to the liquid outlet of the ash water separator is additionally arranged, and ash water can be flushed back and forth in the ash water separator through the control valve to prevent the ash water recovery pipeline from being blocked. And the processes of backwashing the grey water and normally entering the grey water separator are seamlessly connected through the valve, so that the continuity of the grey water recovery system is ensured. The ash-water separator is further communicated with a flocculating agent inlet pipe, a flocculating agent is added, high-concentration calcium and magnesium ions are coagulated and precipitated, and the calcium and magnesium ions are prevented from caking on the pipe wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal chemical industry, in particular to a gasification ash water efficient conveying device. BACKGROUND

[0002] During the operation of the gasification ash water flash evaporation system, the ash water is vacuumized in the vacuum flash evaporator and heated to 60 DEG C for flash evaporation, and the warm ash water pump sends the ash water to the ash water recovery system. Because the calcium and magnesium ion concentration in the ash water is high and coal impurities are entrained, the pipeline is often blocked, affecting the normal operation of the system, at which time the pipeline must be opened for dredging, causing resource waste and cost increase. In addition, after the pipeline is opened, the ash water and the sediment are difficult to collect, and environmental pollution is easily caused by leakage. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a gasification ash water efficient conveying device which adds a flocculating agent to the ash water to precipitate the calcium and magnesium ions, and additionally sets a valve and a backwashing pipe to control the reverse flow of the ash water, so that the ash water repeatedly flows back and forth in the liquid outlet of the ash water separator, avoiding the pipeline blockage.

[0004] The utility model discloses a gasification ash water efficient conveying device which adds a flocculating agent to the ash water to precipitate the calcium and magnesium ions, and additionally sets a valve and a backwashing pipe to control the reverse flow of the ash water, so that the ash water repeatedly flows back and forth in the liquid outlet of the ash water separator, avoiding the pipeline blockage.

[0005] The ash water treatment assembly includes an ash water pump, an ash water cooler and an ash water separator, the two ends of the ash water pump inlet pipe are connected with the ash water pump and the liquid outlet of the vacuum flash evaporator respectively, the two ends of the ash water pump outlet pipe are connected with the ash water pump and the inlet of the ash water cooler respectively, the two ends of the ash water cooler outlet pipe are connected with the outlet of the ash water cooler and the inlet of the ash water separator respectively, one end of the flocculating agent inlet pipe is connected with the inlet of the ash water separator, the two ends of the ash water backwashing pipe are connected with the outlet of the ash water cooler and the liquid outlet of the ash water separator respectively, and one end of the first ash water recovery pipe is connected with the liquid outlet of the ash water separator.

[0006] The ash water cooler outlet pipe, the ash water backwashing pipe, the flocculating agent inlet pipe and the first ash water recovery pipe are all provided with valves.

[0007] In one of the embodiments, a flash gas treatment assembly is further included, and the gas outlet of the vacuum flash evaporator is connected with the flash gas treatment assembly.

[0008] The flash gas treatment assembly comprises a vacuum condenser, a vacuum flash separator and a vacuum pump, two ends of a vacuum condenser inlet pipe are connected with the vacuum flash separator and the vacuum condenser respectively, two ends of a condenser outlet pipe are connected with the vacuum condenser and the vacuum flash separator respectively, two ends of a vacuum pump inlet pipe are connected with a gas outlet of the vacuum flash separator and an inlet of the vacuum pump respectively, a flash gas vent pipe is connected with an outlet of the vacuum pump, and one end of a second grey water recovery pipe is connected with a liquid outlet of the vacuum flash separator.

[0009] Further, a vacuum flash separator liquid level gauge is arranged on the vacuum flash separator.

[0010] Further, the vacuum condenser inlet pipe, the vacuum condenser outlet pipe, the vacuum pump inlet pipe and the second grey water recovery pipe are all provided with valves.

[0011] Further, a second cooling water inlet pipe and a second cooling water outlet pipe are arranged, the vacuum condenser is a water-cooled condenser, the second cooling water inlet pipe and the second cooling water outlet pipe are both connected with the vacuum condenser, and the second cooling water inlet pipe and the second cooling water outlet pipe are both provided with valves.

[0012] In one of the embodiments, a vacuum flash separator liquid level gauge is arranged on the vacuum flash separator.

[0013] In one of the embodiments, the grey water pump inlet pipe and the grey water pump outlet pipe are both provided with valves.

[0014] In one of the embodiments, a first cooling water inlet pipe and a first cooling water outlet pipe are arranged, the grey water cooler is a water-cooled cooler, the first cooling water inlet pipe and the first cooling water outlet pipe are both connected with the grey water cooler, and the first cooling water inlet pipe and the first cooling water outlet pipe are both provided with valves.

[0015] In one of the embodiments, the flocculant inlet pipe and the grey water cooler outlet pipe form a tee joint.

[0016] In one of the embodiments, the grey water backwashing pipe and the grey water cooler outlet pipe form a tee joint, and the grey water backwashing pipe and the first grey water recovery pipe form a tee joint between the grey water separator liquid outlet and the valve of the first grey water recovery pipe.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] (1) The utility model discloses a new parallel but connected to the ash water backwash pipe of ash water cooler outlet pipe, and simultaneously sets up the valve for ash water cooler outlet pipe, ash water backwash pipe, flocculant import pipe and first ash water recovery pipe. When ash water backwash pipe is cut off, and the other three are opened, ash water is normally transported to ash water separator and flows into first ash water recovery pipe from liquid outlet, and when ash water backwash pipe is opened, and the other three are cut off, ash water flows back into ash water separator from the liquid outlet of ash water separator. Two states are alternately carried out when washing, and the repeated flushing of ash water to the liquid outlet of ash water separator is formed, which prevents the blockage of ash water recovery pipeline.

[0019] (2) The process of ash water backwash and the process of normal entering ash water separator are controlled by valve, can seamlessly link, guarantee the continuity of ash water recovery system, and can improve production efficiency.

[0020] (3) Ash water separator is also connected with flocculant import pipe, adds flocculant, and the high concentration calcium and magnesium ions are condensed and precipitated, so that calcium and magnesium ions are prevented from caking on the pipe wall. The flocculated ash water can directly flush the precipitate into first ash water recovery pipe, and the blockage at the pipeline is not easy to form. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a pipeline diagram.

[0022] In the drawing: 1, vacuum flash evaporator;2, ash water import pipe;3, vacuum flash evaporator liquid level meter;4, vacuum condenser;5, second cooling water import pipe;6, second cooling water export pipe;7, vacuum condenser import pipe;8, vacuum condenser export pipe;9, vacuum flash evaporation separator;10, vacuum flash evaporation separator liquid level meter;11, vacuum pump;12, vacuum pump import pipe;13 flash evaporation gas vent pipe;14, second ash water recovery pipe;15, ash water pump;16, ash water pump import pipe;17, ash water pump export pipe;18, ash water cooler;19, first cooling water import pipe;20, first cooling water export pipe;21, ash water separator;22, flocculant import pipe;23, first ash water recovery pipe;24, ash water backwash pipe;25, ash water cooler export pipe. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In addition, if there are these terms "first", "second", these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one feature. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0025] In the present application, unless otherwise expressly specified and limited, if the terms "mounting", "connection", "connection", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element.

[0027] Referring to Figure 1 , Figure 1 A piping diagram of an embodiment of the present application is shown, and the gasification ash water efficient conveying device provided by the embodiment of the present application comprises an ash water treatment assembly, and a liquid outlet of a vacuum flash evaporator 1 is connected with the ash water treatment assembly.

[0028] The ash water treatment assembly comprises an ash water pump 15, an ash water cooler 18, and an ash water separator 21. Two ends of an ash water pump inlet pipe 16 are respectively connected with the ash water pump 15 and the liquid outlet of the vacuum flash evaporator 1. Two ends of an ash water pump outlet pipe 17 are respectively connected with the ash water pump 15 and the inlet of the ash water cooler 18. Two ends of an ash water cooler outlet pipe 25 are respectively connected with the outlet of the ash water cooler 18 and the inlet of the ash water separator 21. One end of a flocculant inlet pipe 22 is connected with the inlet of the ash water separator 21. Two ends of an ash water backwashing pipe 24 are respectively connected with the outlet of the ash water cooler 18 and the liquid outlet of the ash water separator 21. One end of a first ash water recovery pipe 23 is connected with the liquid outlet of the ash water separator 21.

[0029] The ash water cooler outlet pipe 25, the ash water backwashing pipe 24, the flocculant inlet pipe 22, and the first ash water recovery pipe 23 are all provided with valves.

[0030] In this embodiment, a flash gas treatment assembly is further included, and a gas outlet of the vacuum flash evaporator 1 is connected with the flash gas treatment assembly.

[0031] The flash gas treatment assembly includes a vacuum condenser 4, a vacuum flash evaporator separator 9, and a vacuum pump 11. Two ends of a vacuum condenser inlet pipe 7 are respectively connected with the vacuum flash evaporator 1 and the vacuum condenser 4. Two ends of a condenser outlet pipe 8 are respectively connected with the vacuum condenser 4 and the vacuum flash evaporator separator 9. Two ends of a vacuum pump inlet pipe 12 are respectively connected with a gas outlet of the vacuum flash evaporator separator 9 and an inlet of the vacuum pump 11. A flash gas vent pipe 13 is connected with an outlet of the vacuum pump 11. One end of a second grey water recovery pipe 14 is connected with a liquid outlet of the vacuum flash evaporator separator 9.

[0032] Further, a vacuum flash evaporator separator liquid level meter 10 is further included, and the vacuum flash evaporator separator liquid level meter 10 is arranged in the vacuum flash evaporator separator 9.

[0033] Further, the vacuum condenser inlet pipe 7, the condenser outlet pipe 8, the vacuum pump inlet pipe 12, and the second grey water recovery pipe 14 are all provided with valves.

[0034] Further, a second cooling water inlet pipe 5 and a second cooling water outlet pipe 6 are further included. The vacuum condenser 4 is a water-cooled condenser. The second cooling water inlet pipe 5 and the second cooling water outlet pipe 6 are both connected with the vacuum condenser 4. The second cooling water inlet pipe 5 and the second cooling water outlet pipe 6 are both provided with valves.

[0035] In this embodiment, a vacuum flash evaporator liquid level meter 3 is further included, and the vacuum flash evaporator liquid level meter 3 is arranged in the vacuum flash evaporator.

[0036] In this embodiment, the grey water pump inlet pipe 16 and the grey water pump outlet pipe 17 are both provided with valves.

[0037] In this embodiment, a first cooling water inlet pipe 19 and a first cooling water outlet pipe 20 are further included. The grey water cooler 18 is a water-cooled cooler. The first cooling water inlet pipe 19 and the first cooling water outlet pipe 20 are both connected with the grey water cooler 18. The first cooling water inlet pipe 19 and the first cooling water outlet pipe 20 are both provided with valves.

[0038] In this embodiment, the flocculant inlet pipe 22 and the grey water cooler outlet pipe 25 form a tee joint.

[0039] In this embodiment, the grey water backwash pipe 24 forms a tee with the grey water cooler outlet pipe 25, and the grey water backwash pipe 24 forms a tee with the part of the first grey water recovery pipe 23 between the liquid outlet of the grey water separator 21 and the valve of the first grey water recovery pipe 23.

[0040] When the device is in operation:

[0041] (1) The grey water enters the vacuum flasher 1 from the grey water inlet pipe 2, and is subjected to vacuum flashing, and the grey water flows out from the liquid outlet, and the flash gas flows out from the gas outlet.

[0042] (2) The valve of the grey water backwash pipe 24 is closed, and the other valves are opened, the grey water is pumped out from the liquid outlet of the vacuum flasher 1 by the grey water pump 15, and flows into the inlet of the grey water separator 21 after being cooled by the grey water cooler 18, the coagulant is introduced into the grey water separator 21 by the coagulant inlet pipe 22 to cause the calcium and magnesium ions in the grey water to flocculate, and finally the grey water flows into the first grey water recovery pipe 23 from the liquid outlet of the grey water separator 21 for recovery.

[0043] (3) When the grey water is backwashed, the valve of the grey water backwash pipe 24 is opened, and the valves of the grey water cooler outlet pipe 25, the coagulant inlet pipe 22 and the first grey water recovery pipe 23 are closed, and the grey water flows back into the grey water separator 21 from the liquid outlet of the grey water separator 21.

[0044] (4) Steps (2) and (3) are repeatedly alternated periodically to flush the pipeline of the grey water.

[0045] (5) The flash gas flows out from the gas outlet of the vacuum flasher 1, is cooled into liquid by the vacuum condenser 4, and enters the vacuum flash separation device 9 to be subjected to gas-liquid separation again, the gas is pumped out from the gas outlet of the vacuum flash separation device 9 by the vacuum pump 11, and the liquid flows into the second grey water recovery pipe 14 from the liquid outlet of the vacuum flash separation device 9 for recovery.

[0046] Any combination of the technical features of the above embodiments can be made, and in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0047] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A gasification ash water high-efficiency conveying device, characterized in that, The grey water treatment assembly comprises a grey water pump, a grey water cooler and a grey water separator, two ends of a grey water pump inlet pipe are connected with the grey water pump and a bottom outlet of the vacuum flash evaporator respectively, two ends of a grey water pump outlet pipe are connected with the grey water pump and an inlet of the grey water cooler respectively, two ends of a grey water cooler outlet pipe are connected with an outlet of the grey water cooler and an inlet of the grey water separator respectively, one end of a flocculant inlet pipe is connected with the inlet of the grey water separator, two ends of a grey water backwashing pipe are connected with the outlet of the grey water cooler and a liquid outlet of the grey water separator respectively, one end of a first grey water recovery pipe is connected with the liquid outlet of the grey water separator. The grey water cooler outlet pipe, the grey water backwashing pipe, the flocculant inlet pipe and the first grey water recovery pipe are all provided with valves. The flash gas treatment assembly comprises a vacuum condenser, a vacuum flash evaporation separator and a vacuum pump, two ends of a vacuum condenser inlet pipe are connected with the vacuum flash evaporator and the vacuum condenser respectively, two ends of a condenser outlet pipe are connected with the vacuum condenser and the vacuum flash evaporation separator respectively, two ends of a vacuum pump inlet pipe are connected with a gas outlet of the vacuum flash evaporation separator and an inlet of the vacuum pump respectively, a flash gas venting pipe is connected with an outlet of the vacuum pump, one end of a second grey water recovery pipe is connected with a liquid outlet of the vacuum flash evaporation separator.

2. The gasification grey water high efficient delivery device of claim 1, wherein, The vacuum flash evaporation separator liquid level meter is arranged in the vacuum flash evaporation separator. The vacuum condenser inlet pipe, the vacuum condenser outlet pipe, the vacuum pump inlet pipe and the second grey water recovery pipe are all provided with valves.

3. The gasification grey water high efficient delivery device of claim 2, wherein, The vacuum condenser is a water-cooled condenser, the second cooling water inlet pipe and the second cooling water outlet pipe are both connected with the vacuum condenser, and the second cooling water inlet pipe and the second cooling water outlet pipe are both provided with valves.

4. The gasification grey water high efficient delivery apparatus according to claim 2, wherein, The vacuum flash evaporator liquid level meter is arranged in the vacuum flash evaporator.

5. The gasification grey water high efficient delivery apparatus of claim 2, wherein, The grey water pump inlet pipe and the grey water pump outlet pipe are both provided with valves.

6. The gasification grey water high efficient delivery apparatus of claim 1, wherein, The grey water cooler is a water-cooled cooler, the first cooling water inlet pipe and the first cooling water outlet pipe are both connected with the grey water cooler, and the first cooling water inlet pipe and the first cooling water outlet pipe are both provided with valves.

7. The gasification grey water high efficient delivery apparatus of claim 1, wherein, The flocculant inlet pipe and the grey water cooler outlet pipe form a tee joint.

8. The gasification grey water high efficient delivery apparatus of claim 1, wherein, The grey water backwashing pipe and the grey water cooler outlet pipe form a tee joint, and the grey water backwashing pipe and the first grey water recovery pipe form a tee joint between the grey water separator liquid outlet and the valve of the first grey water recovery pipe.

9. The gasification grey water high efficient delivery apparatus of claim 1, wherein, ​ 10. The gasification grey water high efficient delivery apparatus of claim 1, wherein, ​

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