CN211871461U - Deaerator for treating coal gasification ash water - Google Patents

Abstract

The utility model discloses a deaerator for treating coal gasification ash water, which comprises a horizontal water tank and a deoxygenating tower; a vertically arranged deoxygenation tower is fixedly communicated above the side wall of the horizontal water tank; a plurality of spray headers are arranged on a water inlet pipe positioned in the deoxygenation tower; a plurality of baffles which are uniformly staggered are horizontally fixed in the deoxygenation tower below the water inlet pipe; one end of the baffle is fixed on the inner wall of the deoxygenation tower; the other end of the baffle is fixed with an overflow plate which is vertically arranged; a plurality of air nozzles facing the deoxygenation tower are arranged on the air inlet pipe positioned in the horizontal water tank; the bottom of the horizontal water tank is provided with a water outlet. The utility model has the advantages that the structure is simple, the realization is easy, the function of removing oxygen from the ash water is realized, the problem of blockage of the oxygen remover is avoided, the normal operation of the production system is ensured, the maintenance cost of the equipment is reduced, and the production benefit of enterprises is increased; the water vapor in the waste gas is recycled, and the water resource is saved.

Description

Deaerator for treating coal gasification ash water

The technical field is as follows:

the utility model relates to the field of coal chemical industry, in particular to a deaerator for treating coal gasification ash water.

Background art:

the coal gasification process is a process of converting combustible parts in coal or coal coke into combustible gas by chemical reaction in a gasification furnace under a high-temperature condition by taking coal or coal coke as a raw material and taking oxygen, water vapor and the like as gasification agents, wherein grey water in the gasification furnace is treated by a grey water treatment system and then is deoxidized by a deaerator, and the deoxidized grey water is recycled for a washing tower to wash crude gas discharged from the gasification furnace; the structure of the existing deaerator is that a spinning film pipe is added with a wire mesh filler or the spinning film pipe is added with a stainless steel pall ring filler; because the solid content in the grey water is higher, the deaerator is very easy to have the problem that the spinning pipe and the silk screen filler are blocked in the operation process, and the normal operation of a production system is influenced, so that the production benefit of an enterprise is influenced, and the cost of equipment maintenance is increased.

The utility model has the following contents:

an object of the utility model is to provide a simple structure has avoided blockking up, and has practiced thrift the oxygen-eliminating device of water resource's processing coal gasification buck.

The utility model discloses by following technical scheme implement: a deaerator for treating coal gasification ash water comprises a horizontal water tank and a deoxygenating tower; the vertical deoxygenation tower is fixedly communicated above the side wall of the horizontal water tank; the top of the deoxygenation tower is provided with an exhaust port; the device comprises a deoxygenation tower, a water inlet pipe, a plurality of spray headers and a plurality of spray headers, wherein the deoxygenation tower is provided with the water inlet pipe; a plurality of baffles which are uniformly staggered are horizontally fixed in the deoxygenation tower below the water inlet pipe; one end of the baffle is fixed on the inner wall of the deoxygenation tower; the other end of the baffle is fixed with a vertically arranged overflow plate; an air inlet pipe is arranged on the horizontal water tank and penetrates through and is fixed in the horizontal water tank; a plurality of air nozzles facing the deoxygenation tower are arranged on the air inlet pipe positioned in the horizontal water tank; a water outlet is formed in the bottom of the horizontal water tank; a conical cap is fixed at the water outlet in the horizontal water tank through at least two vertically arranged connecting rods.

Furthermore, the device also comprises a regulating valve, a first liquid level sensor, an oxygen removal water pump, a grey water storage tank and a controller; the regulating valve is arranged on the water inlet pipe; the horizontal water tank is internally provided with the first liquid level sensor; the water outlet of the horizontal water tank is communicated with the water inlet of the oxygen removal water pump through a pipeline, and the liquid outlet of the oxygen removal water pump is communicated with the water inlet of the grey water storage tank through a pipeline; the signal output end of the first liquid level sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the regulating valve.

Further, the system also comprises a cooler, a gas-liquid separation tank, a second liquid level sensor, a storage tank and an electromagnetic valve; the exhaust port of the deoxygenation tower is communicated with the inlet of the cooler through a pipeline, the outlet of the cooler is communicated with the inlet of the gas-liquid separation tank through a pipeline, the second liquid level sensor is arranged in the gas-liquid separation tank, and the water outlet of the gas-liquid separation tank is communicated with the water inlet of the storage tank through a pipeline; the electromagnetic valve is arranged on a pipeline between the gas-liquid separation tank and the storage tank; the signal output end of the second liquid level sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the electromagnetic valve.

The utility model has the advantages that: 1. the utility model has simple structure, easy realization and automatic control function, the grey water is sprayed from the spray header and overflows downwards in sequence, and in the process of overflowing, the steam is contacted with the grey water to remove the oxygen in the grey water; the method has the advantages that the function of removing oxygen from the ash water is realized, the problem of blockage of the oxygen remover is avoided, the normal operation of a production system is ensured, the equipment maintenance cost is reduced, and the production benefit of enterprises is increased; 2. through the cooler and the gas-liquid separation tank, the water vapor in the waste gas is recovered, and the water resource is saved.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a system control block diagram of the present invention.

The device comprises a horizontal water tank 1, a water outlet 1.1, a deoxygenation tower 2, an exhaust port 2.1, a first liquid level sensor 3, a deoxygenation water pump 4, an ash water storage tank 5, a controller 6, a cooler 7, a gas-liquid separation tank 8, a second liquid level sensor 9, a storage tank 10, an electromagnetic valve 11, a water inlet pipe 12, a spray header 13, a baffle plate 14, an overflow plate 15, an air inlet pipe 16, an air nozzle 17, a connecting rod 18, a conical cap 19 and a regulating valve 20.

The specific implementation mode is as follows:

as shown in fig. 1-3, a deaerator for treating coal gasification grey water comprises a horizontal water tank 1, a deaerator tower 2, a regulating valve 20, a first liquid level sensor 3, a deaerating water pump 4, a grey water storage tank 5, a controller 6, a cooler 7, a gas-liquid separation tank 8, a second liquid level sensor 9, a storage tank 10 and an electromagnetic valve 11; a vertical deoxygenation tower 2 is fixedly communicated above the side wall of the horizontal water tank 1; the top of the deoxygenation tower 2 is provided with an exhaust port 2.1; a water inlet pipe 12 is arranged on the deoxygenation tower 2, the water inlet pipe 12 is fixedly penetrated on the deoxygenation tower 2, and a plurality of spray headers 13 are arranged on the water inlet pipe 12 positioned in the deoxygenation tower 2; a plurality of baffles 14 which are uniformly staggered are horizontally fixed in the deoxygenation tower 2 below the water inlet pipe 12; one end of the baffle 14 is fixed on the inner wall of the deoxygenation tower 2; the other end of the baffle 14 is fixed with an overflow plate 15 which is vertically arranged; an air inlet pipe 16 is arranged on the horizontal water tank 1, and the air inlet pipe 16 penetrates through and is fixed in the horizontal water tank 1; a plurality of air nozzles 17 facing the deoxidation tower 2 are arranged on an air inlet pipe 16 positioned in the horizontal water tank 1; a water outlet 1.1 is arranged at the bottom of the horizontal water tank 1; the water outlet 1.1 in the horizontal water tank 1 is fixed with a conical cap 19 through at least two vertically arranged connecting rods 18, the conical cap 19 effectively prevents water falling from the deoxygenating tower 2 to enable water in the horizontal water tank 1 to form a rotational flow, the rotational flow easily enables grey water to be mixed with gas, rotational flow is avoided, gas carrying in the grey water is avoided, further gas carrying in water flowing out of the water outlet 1.1 of the horizontal water tank 1 is avoided, the water carrying gas is extremely prone to causing damage to the deoxygenating water pump 4, therefore, the grey water carrying gas is avoided, the deoxygenating water pump 4 is protected, and the service life of the deoxygenating water pump 4 is prolonged.

The water inlet pipe 12 is provided with a regulating valve 20; a first liquid level sensor 3 is arranged in the horizontal water tank 1; the water outlet 1.1 of the horizontal water tank 1 is communicated with the water inlet of the oxygen-removing water pump 4 through a pipeline, and the liquid outlet of the oxygen-removing water pump 4 is communicated with the water inlet of the grey water storage tank 5 through a pipeline; an exhaust port 2.1 of the deoxygenation tower 2 is communicated with an inlet of a cooler 7 through a pipeline, an outlet of the cooler 7 is communicated with an inlet of a gas-liquid separation tank 8 through a pipeline, a second liquid level sensor 9 is arranged in the gas-liquid separation tank 8, and a water outlet of the gas-liquid separation tank 8 is communicated with a water inlet of a storage tank 10 through a pipeline; an electromagnetic valve 11 is provided in a pipe between the gas-liquid separation tank 8 and the storage tank 10.

The signal output ends of the first liquid level sensor 3 and the second liquid level sensor 9 are connected with the signal input end of the controller 6 through signals; the signal output end of the controller 6 is respectively connected with the signal input ends of the regulating valve 20 and the electromagnetic valve 11 through signals.

The working process is as follows: the grey water treated by the grey water treatment system enters from a water inlet of a water inlet pipe 12 on the deoxidation tower 2, is sprayed from a spray header 13 and falls on a first layer of baffle plate 14, then water on the baffle plate 14 overflows from an overflow plate 15 and flows onto a next layer of baffle plate 14, and finally flows into the horizontal water tank 1 after flowing through the baffle plate 15; steam enters from an air inlet of an air inlet pipe 16 on the horizontal water tank 1, is sprayed out from an air nozzle 17 and enters the deoxidation tower 2 to be fully contacted with the grey water, so that oxygen in the grey water is fully removed, the function of removing oxygen from the grey water is realized, the problem of blockage of a deaerator is avoided, the normal operation of a production system is ensured, the equipment maintenance cost is reduced, and the production benefit of an enterprise is increased; the ash water from which oxygen is removed is sent to an ash water storage tank 5 through an oxygen removal water pump 4, and finally is sent to a washing tower as washing water of crude gas, so that the recovery and utilization of the ash water are realized; the waste gas in the deoxidation tower 2 is discharged from the exhaust port 2.1 at the top of the deoxidation tower 2, and is cooled by the cooler 7, the cooled substance is sent to the gas-liquid separation tank 8 for gas-liquid separation, the separated gas is discharged, the condensed water solution is recycled to the storage tank 10 and is reused as purified water, the water vapor in the waste gas is recycled, and the water resource is saved.

The first liquid level sensor 3 detects the water level in the horizontal water tank 1 constantly and transmits a signal to the controller 6, when the detected water level is higher than a set value, the controller 6 controls the regulating valve 20 to be adjusted to be small, the gray water amount entering the deoxygenator tower 2 of the deoxygenator is reduced, and when the detected water level is lower than the set value, the controller 6 controls the regulating valve 20 to be opened to be large, and the gray water amount entering the deoxygenator tower 2 is increased; the second liquid level sensor 9 detects the water level in the gas-liquid separation tank 8 at any time and transmits a signal to the controller 6, when the detected water level is higher than a set value, the controller 6 controls the electromagnetic valve 11 to be opened to convey the water in the gas-liquid separation tank 8 to the storage tank 10, and when the detected water level is lower than the set value, the controller 6 controls the electromagnetic valve 11 to be closed to stop conveying the water to the storage tank 10; the utility model discloses simple structure easily realizes, has the automatic control function moreover.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. A deaerator for treating coal gasification ash water is characterized by comprising a horizontal water tank and a deoxygenating tower; the vertical deoxygenation tower is fixedly communicated above the side wall of the horizontal water tank; the top of the deoxygenation tower is provided with an exhaust port; the device comprises a deoxygenation tower, a water inlet pipe, a plurality of spray headers and a plurality of spray headers, wherein the deoxygenation tower is provided with the water inlet pipe; a plurality of baffles which are uniformly staggered are horizontally fixed in the deoxygenation tower below the water inlet pipe; one end of the baffle is fixed on the inner wall of the deoxygenation tower; the other end of the baffle is fixed with a vertically arranged overflow plate; an air inlet pipe is arranged on the horizontal water tank and penetrates through and is fixed in the horizontal water tank; a plurality of air nozzles facing the deoxygenation tower are arranged on the air inlet pipe positioned in the horizontal water tank; a water outlet is formed in the bottom of the horizontal water tank; a conical cap is fixed at the water outlet in the horizontal water tank through at least two vertically arranged connecting rods.

2. The deaerator for treating coal gasification grey water according to claim 1, further comprising a regulating valve, a first liquid level sensor, a deaerating water pump, a grey water storage tank and a controller; the regulating valve is arranged on the water inlet pipe; the horizontal water tank is internally provided with the first liquid level sensor; the water outlet of the horizontal water tank is communicated with the water inlet of the oxygen removal water pump through a pipeline, and the liquid outlet of the oxygen removal water pump is communicated with the water inlet of the grey water storage tank through a pipeline; the signal output end of the first liquid level sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the regulating valve.

3. The deaerator for treating coal gasification grey water according to claim 2, further comprising a cooler, a gas-liquid separation tank, a second level sensor, a storage tank and a solenoid valve; the exhaust port of the deoxygenation tower is communicated with the inlet of the cooler through a pipeline, the outlet of the cooler is communicated with the inlet of the gas-liquid separation tank through a pipeline, the second liquid level sensor is arranged in the gas-liquid separation tank, and the water outlet of the gas-liquid separation tank is communicated with the water inlet of the storage tank through a pipeline; the electromagnetic valve is arranged on a pipeline between the gas-liquid separation tank and the storage tank; the signal output end of the second liquid level sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the electromagnetic valve.

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