Grey water recycling and energy consumption reducing device

Abstract

The utility model discloses an ash water recycling and energy consumption reducing device which comprises a gasification furnace chilling chamber, and a slag lock hopper, a slag conveyor, a slag lock hopper flushing water tank, a slag lock hopper pressure relief valve, a slag lock hopper pressure relief pipeline, an isolation hand valve, an ash water recycling pipeline, a recycling hand valve and a low-pressure ash water pipeline which are connected to the gasification furnace chilling chamber, the gasification furnace chilling chamber is connected to the top of the slag lock hopper through a pipeline valve; a slag lock hopper pressure relief pipeline is arranged at the top of the slag lock hopper; a slag lock hopper pressure relief valve is arranged on the slag lock hopper pressure relief pipeline, and in the pressure relief process of the slag lock hopper, pressure relief ash water is discharged into the slag lock hopper flushing water tank through the ash water recovery pipeline; compared with the prior art, the technical process of pressure water relief of the slag lock hopper is optimized; the pressure relief water of the slag lock hopper directly enters the slag lock hopper flushing water buffer tank, so that unnecessary work of the slag pool pump and the low-pressure ash water pump is reduced, and the operation energy consumption of the slag pool pump and the low-pressure ash water pump is reduced due to energy-saving operation of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of grey water recovery, in particular to a device for reducing energy consumption by recycling grey water. Background Art

[0002] The coal gasification technology of aerospace furnace adopts the process of dry feeding and wet ash removal, so the application of water is indispensable in the slag lock bucket discharge process of the gasifier system. The coarse slag at the bottom of the gasifier quenching chamber is crushed by the slag crusher and enters the slag lock bucket through the pipeline valve. The slag is precipitated in the slag lock bucket and discharged through the slag lock bucket after a certain period, realizing the functions of slag collection and discharge, thereby maintaining the stable and efficient operation of the gasifier device. In the process of slag discharge, in order to ensure that the slag can be completely discharged, the slag lock bucket flushing water is set to continuously flush the slag lock bucket during the slag discharge process; the ash water of the slag lock bucket flushing water tank is provided by a low-pressure ash water pump. The slag lock bucket is arranged in front, and the water inside the lock bucket needs to be drained to reduce the pressure of the slag lock bucket to facilitate safe slag discharge. During the original design process, the ash water from the slag lock bucket depressurization is directly discharged to the small slag pool of the slag scoop machine, and the water in the small slag pool is pumped to the true flash treatment through the slag pool; since the ash water at the top of the slag lock bucket before pressure relief is relatively clean after sedimentation, it is directly discharged to the slag scoop machine, and then pumped to the true flash system by the slag pool, and the treated water is then pumped to the slag lock bucket flushing water tank for reuse through a low-pressure ash water pump, which leads to energy waste of the slag pool pump and the low-pressure ash water pump. For this reason, the utility model proposes an ash water recycling and energy consumption reduction device. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an ash water recycling and energy consumption reduction device to solve the problem of relatively high energy consumption of slag pool pumps and low-pressure ash water pumps caused by the unreasonable process of slag lock bucket pressure relief directly entering the small slag pool of the slag scoop machine.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for reducing energy consumption by recycling ash water, comprising a gasifier quenching chamber and a slag lock bucket, a slag scoop, a slag lock bucket flushing water tank, a slag lock bucket pressure relief valve, a slag lock bucket pressure relief pipeline, an isolation hand valve, an ash water recovery pipeline, a recovery hand valve, and a low-pressure ash water pipeline connected to the gasifier quenching chamber, characterized in that: the gasifier quenching chamber is connected to the top of the slag lock bucket through a pipeline valve; a slag lock bucket pressure relief pipeline is arranged on the top of the slag lock bucket; a slag lock bucket pressure relief valve is arranged on the slag lock bucket pressure relief pipeline, and during the pressure relief process of the slag lock bucket, the depressurized ash water is discharged into the slag lock bucket flushing water tank through the ash water recovery pipeline; the bottom of the slag lock bucket is connected to the slag scoop through a slag discharge pipeline, and the slag lock bucket discharges slag into the slag scoop by alternating high and low pressure operation; the slag lock bucket flushing water tank replenishes water to obtain low-pressure ash water, which is transported through the low-pressure ash water pipeline.

[0005] As a preferred technical solution of the utility model, a recovery hand valve is installed on the gray water recovery pipeline.

[0006] As a preferred technical solution of the utility model, an isolation hand valve is also installed on the slag lock bucket pressure relief pipeline. During the normal pressure relief of the slag lock bucket, the isolation hand valve and the recovery hand valve are always open.

[0007] As a preferred technical solution of the utility model, the isolation hand valve is arranged near the intersection of the slag lock bucket pressure relief pipeline and the ash water recovery pipeline to reduce or avoid ash accumulation.

[0008] As a preferred technical solution of the utility model, a check valve is arranged at the tank body from the recovery pipeline to the slag lock bucket flushing water tank to prevent the backflow of ash water.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model discloses an energy consumption reducing device for recycling ash water, which optimizes the process flow of slag lock bucket pressure relief water; the slag lock bucket pressure relief water directly enters the slag lock bucket flushing water buffer tank, which reduces unnecessary work of the slag pool pump and the low-pressure ash water pump, reduces the operating energy consumption of the slag pool pump and the low-pressure ash water pump, and realizes energy-saving operation of the device.

[0011] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] In the figure: 1. gasification furnace quenching chamber, 2. slag lock bucket, 3. slag scoop machine, 4. slag lock bucket flushing water tank, 5. slag lock bucket pressure relief valve, 6. slag lock bucket pressure relief pipeline, 7. isolation hand valve, 8. ash water recovery pipeline, 9. recovery hand valve, 10. low-pressure ash water pipeline. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] See also Figure 1 In this embodiment, an ash water recycling and energy consumption reduction device is provided, comprising a gasifier quenching chamber 1 and a slag lock bucket 2 connected to the gasifier quenching chamber 1, a slag scooping machine 3, a slag lock bucket flushing water tank 4, a slag lock bucket pressure relief valve 5, a slag lock bucket pressure relief pipeline 6, an isolation hand valve 7, an ash water recovery pipeline 8, a recovery hand valve 9, and a low-pressure ash water pipeline 10, characterized in that: the gasifier quenching chamber 1 is connected to the top of the slag lock bucket 2 through a pipeline valve; the top of the slag lock bucket 2 is provided with a slag lock bucket pressure relief valve 5, a slag lock bucket pressure relief pipeline 6, an isolation hand valve 7, an ash water recovery pipeline 8, a recovery hand valve 9, and a low-pressure ash water pipeline 10. pipeline 6; a slag lock bucket pressure relief valve 5 is arranged on the slag lock bucket pressure relief pipeline 6, and during the pressure relief process of the slag lock bucket 2, the pressure relief ash water is discharged into the slag lock bucket flushing water tank 4 through the ash water recovery pipeline 8; the bottom of the slag lock bucket 2 is connected to the slag scoop machine 3 through the slag discharge pipeline, and the slag lock bucket 2 discharges the slag into the slag scoop machine 3 through alternating operation of high and low pressures; the slag lock bucket flushing water tank 4 replenishes water to the low-pressure ash water, which is transported through the low-pressure ash water pipeline 10, and the bottom of the slag lock bucket 2 is connected to the slag scoop machine 3 through the slag discharge pipeline for slag discharge. The slag scoop 3 receives the slag from the slag lock bucket 2, and transports the ash and slag out of the boundary through the operation of the scraper; the slag lock bucket flushing water tank 4 discharges the ash water in the tank to the slag lock bucket 2 when the slag lock bucket 2 is discharging slag, so as to help flush the slag; the ash water in the slag lock bucket flushing water tank 4 comes from the low-pressure ash water pump; the pressure relief pipe of the slag lock bucket is arranged on the top of the slag lock bucket, and a pneumatic switch valve is arranged on the pressure relief pipeline. When the slag lock bucket is depressurized, the pressure of the slag lock bucket is released into the slag lock bucket flushing water tank through the pressure relief pipeline, so as to reduce the waste of ash water and reduce the energy consumption of the low-pressure ash water pump.

[0018] A recovery hand valve 9 is installed on the grey water recovery pipeline 8;

[0019] An isolation hand valve 7 is also installed on the slag lock bucket pressure relief pipeline 6. During the normal pressure relief of the slag lock bucket 2, the isolation hand valve 7 and the recovery hand valve 9 are normally open.

[0020] The isolation hand valve 7 is arranged near the intersection of the slag lock bucket pressure relief pipeline 6 and the ash water recovery pipeline 8 to reduce or avoid ash accumulation.

[0021] A check valve is provided at the tank body from the recovery pipeline 8 to the slag lock bucket flushing water tank 4 to prevent the backflow of ash water.

[0022] The elevation of the slag lock bucket flushing water tank is 15 meters higher than that of the slag lock bucket. After the pressure relief water of the slag lock bucket 2 is discharged to the slag lock bucket flushing water tank 4, the influence of the position difference on the slag discharge pressure of the slag lock bucket 2 should be considered, and the slag discharge pressure interlock value should be optimized and adjusted.

[0023] When in use, close the isolation hand valve 7, fully open the recovery hand valve 9 of the ash water recovery pipeline 8, and when the slag lock bucket is discharging slag, after the slag lock bucket pressure relief valve 5 is opened, the depressurized ash water enters the slag lock bucket flushing water tank 4 through the slag lock bucket pressure relief pipeline 6 and the ash water recovery pipeline 8, thereby realizing the recycling of ash water, reducing the amount of low-pressure ash water supplied by the slag lock bucket flushing water tank 4, and reducing the amount of ash water generated by the slag pool pump extracting the pressure relief, while safely discharging slag, achieving the purpose of recycling ash water and reducing energy consumption.

[0024] 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 device for reducing energy consumption by recycling grey water, characterized in that: It includes a gasifier quenching chamber and a slag lock bucket, a slag scoop, a slag lock bucket flushing water tank, a slag lock bucket pressure relief valve, a slag lock bucket pressure relief pipeline, an isolation hand valve, an ash water recovery pipeline and a recovery hand valve connected to the gasifier quenching chamber, and is characterized in that: the gasifier quenching chamber is connected to the top of the slag lock bucket through a pipeline valve; a slag lock bucket pressure relief pipeline is arranged on the top of the slag lock bucket; a slag lock bucket pressure relief valve is arranged on the slag lock bucket pressure relief pipeline, and during the pressure relief process of the slag lock bucket, the pressure-relieved ash water is discharged into the slag lock bucket flushing water tank through the ash water recovery pipeline; the bottom of the slag lock bucket is connected to the slag scoop through a slag discharge pipeline, and the slag lock bucket discharges the slag into the slag scoop by alternating high and low pressure operation; the slag lock bucket flushing water tank replenishes water to the low-pressure ash water, which is transported through the low-pressure ash water pipeline.

2. The device for reducing energy consumption by recycling grey water according to claim 1, characterized in that: A recovery hand valve is installed on the grey water recovery pipeline.

3. The device for reducing energy consumption by recycling grey water according to claim 1, characterized in that: An isolation hand valve is also installed on the slag lock bucket pressure relief pipeline. During the normal pressure relief of the slag lock bucket, the isolation hand valve and the recovery hand valve are always open.

4. The device for reducing energy consumption by recycling grey water according to claim 1, characterized in that: The isolation hand valve is arranged at a position close to the junction of the slag lock bucket pressure relief pipeline and the ash water recovery pipeline.

5. The device for reducing energy consumption by recycling grey water according to claim 1, characterized in that: A check valve is arranged at the tank body from the recovery pipeline to the slag lock bucket flushing water tank.

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