CN113578015A - Desulfurizing device - Google Patents

Desulfurizing device Download PDF

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Publication number
CN113578015A
CN113578015A CN202010365427.7A CN202010365427A CN113578015A CN 113578015 A CN113578015 A CN 113578015A CN 202010365427 A CN202010365427 A CN 202010365427A CN 113578015 A CN113578015 A CN 113578015A
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China
Prior art keywords
reactor
storage tank
control valve
liquid
communication
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CN202010365427.7A
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Chinese (zh)
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CN113578015B (en
Inventor
刘蔷
吴宇
张春阳
高晓根
宋彬
计维安
赵婷
伍坤一
张静迪
陈佳
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Petrochina Co Ltd
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Petrochina Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
    • C01B17/05—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by wet processes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Gas Separation By Absorption (AREA)
  • Industrial Gases (AREA)

Abstract

The disclosure relates to a desulfurization device, and belongs to the technical field of desulfurization. The desulfurization device comprises a reactor, a filter, a first liquid storage tank, a lift pump, a water injection device and a communicating pipeline. The communicating pipe comprises a first communicating pipe, a second communicating pipe, a third communicating pipe and a fourth communicating pipe, the lift pump is located in the first liquid storage tank, the filter is communicated with the bottom outlet of the reactor through the first communicating pipe, the first liquid storage tank is communicated with the bottom outlet of the filter through the second communicating pipe, the lift pump is communicated with the top inlet of the reactor through the third communicating pipe, and the water injection device is communicated with the filter through the fourth communicating pipe. The filter cloth sparge water storage in the filter is in first liquid storage pot, and the lift pump pours the filter cloth sparge water of storage into the reactor in with first liquid storage pot into, guarantees the moisture capacity in the reactor, can accomplish the reaction, and carries out cyclic utilization to the filter cloth sparge water, avoids causing the wasting of resources, reduce cost.

Description

Desulfurizing device
Technical Field
The disclosure relates to the technical field of desulfurization, in particular to a desulfurization device.
Background
Natural gas, acid gas or tail gas generated in the production process of natural gas contains hydrogen sulfide (chemical formula: H)2S). The sulfur element in natural gas, acid gas or tail gas can be used for producing sulfur, if the sulfur-containing gas is directly discharged, not only resource waste is caused, but also environmental pollution is caused. The sulfur-containing gas needs to be desulfurized, and a liquid-phase oxidation desulfurization process is a commonly used desulfurization process in the related art.
The desulfurization device of the liquid-phase oxidation desulfurization process comprises: reactor, feeding device and filter. In the liquid phase oxidation desulfurization process, firstly, sulfur-containing gas and oxygen are fed into a reactor, then, a complex iron solution is injected into the reactor, so that high-valence iron ions (Fe) in the complex iron solution3+) H is to be2S is oxidized into elemental sulfur and is deposited at the bottom of the reactor to form sulfur slurry. The sulfur slurry is sent to a filter and is uniformly distributed on filter cloth of the filter by a feeding device, so that liquid components in the sulfur slurry are filtered to a filtrate tank through the filter cloth, and sulfur solids are retained on the filter cloth to form a sulfur filter cake.
In the related art, sulfur particles and the like may be attached to the filter cloth during the process of filtering sulfur, which affects the filtering effect of the filter cloth and needs to be washed. However, the filter cloth rinsing water left after filter cloth rinsing contains a large amount of chemical components, and if the filter cloth rinsing water is directly discharged, the environment is polluted, the filter cloth rinsing water needs to be treated, and the cost is increased.
Disclosure of Invention
The embodiment of the disclosure provides a desulphurization device, can be to filter cloth sparge water cyclic utilization, reduce cost, technical scheme is as follows:
the present disclosure provides a desulfurization device, which comprises a reactor, a filter, a first liquid storage tank, a lift pump, a water injection device and a communication pipeline;
the lift pump is located in the first liquid storage tank, the communicating pipeline comprises a first communicating pipeline, a second communicating pipeline, a third communicating pipeline and a fourth communicating pipeline, the filter passes through the first communicating pipeline and is communicated with the bottom outlet of the reactor, the first liquid storage tank passes through the second communicating pipeline and is communicated with the bottom outlet of the filter, the lift pump passes through the third communicating pipeline and is communicated with the top inlet of the reactor, and the water injection device passes through the fourth communicating pipeline and is communicated with the filter.
In one implementation manner of the embodiment of the present disclosure, the desulfurization apparatus further includes a controller, and a first liquid level meter is disposed in the reactor;
the controller is configured to control the lifting pump to feed the liquid in the first liquid storage tank into the reactor when the liquid level detected by the first liquid level meter is lower than a first liquid level value.
In an implementation manner of the embodiment of the present disclosure, a second liquid level meter is further disposed in the first liquid storage tank, the communication pipeline further includes a fifth communication pipeline, and the water injection device is communicated with the reactor through the fifth communication pipeline;
the controller is configured to control the water injection device to inject water into the reactor when the liquid level detected by the second liquid level meter is lower than a second liquid level value and the liquid level detected by the first liquid level meter is lower than the first liquid level value.
In an implementation manner of the embodiment of the present disclosure, the desulfurization apparatus further includes a second liquid storage tank, a first control valve, and a second control valve, and the communication pipe further includes a sixth communication pipe;
one end of the sixth communicating pipeline is communicated with an inlet at the top of the second liquid storage tank, and the other end of the sixth communicating pipeline is connected to the third communicating pipeline;
the first control valve is positioned on the sixth communicating pipeline, the second control valve is positioned on the third communicating pipeline, and the second control valve is positioned between a connecting point of the third communicating pipeline and the sixth communicating pipeline and the reactor.
In one implementation of the disclosed embodiment, the desulfurization device further includes a third control valve, the communication channel further includes a seventh communication channel,
in the vertical direction, the second liquid storage tank is positioned above the first liquid storage tank, the first liquid storage tank is communicated with a bottom outlet of the second liquid storage tank through a seventh communication pipeline, and the third control valve is positioned on the seventh communication pipeline.
In one implementation manner of the embodiment of the present disclosure, the desulfurization device further includes a first check valve, the first check valve is located on the third communicating pipe, and the first check valve is located between a connection point of the third communicating pipe and the sixth communicating pipe and the lift pump;
the first one-way valve is configured to be in an open state when the lift pump is on and in a closed state when the lift pump is off.
In one implementation manner of the embodiment of the present disclosure, the desulfurization apparatus further includes a third liquid level meter, and the third liquid level meter is located in the second liquid storage tank;
the controller is configured to control the lift pump to send the liquid in the first liquid storage tank into the second liquid storage tank when the liquid level detected by the first liquid level meter is higher than a third liquid level value, the liquid level detected by the second liquid level meter is higher than a fourth liquid level value, and the liquid level detected by the third liquid level meter is lower than a fifth liquid level value, wherein the third liquid level value is greater than the first liquid level value, and the fourth liquid level value is greater than the second liquid level value.
In one implementation manner of the embodiment of the present disclosure, the desulfurization device further includes a fourth control valve and a fifth control valve, one end of the fifth communication pipeline is communicated with the top inlet of the reactor, and the other end of the fifth communication pipeline is communicated with the fourth communication pipeline;
the fourth control valve is positioned on the fifth communicating pipeline, the fifth control valve is positioned on the fourth communicating pipeline, and the fifth control valve is positioned between the joint of the fourth communicating pipeline and the fifth communicating pipeline and the filtering machine.
In an implementation manner of the embodiment of the present disclosure, the desulfurization apparatus further includes a wastewater tank and a sixth control valve, and the communication pipe further includes the eighth communication pipe;
the eighth communicating pipeline is respectively communicated with the lifting pump and the sewage tank truck, and the sixth control valve is positioned on the eighth communicating pipeline.
In one implementation of the embodiment of the disclosure, the desulfurization device further comprises a low tank, and the first liquid storage tank is located in the low tank.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
the sulfur-containing gas reacts with oxygen in the reactor to generate sulfur, the sulfur is deposited at the bottom of the reactor in the form of sulfur slurry and flows to the filter through the first communicating pipeline, and is distributed on the filter cloth of the filter, and the sulfur slurry is filtered by the filter cloth. The water injection device injects water into the filter through the fourth communicating pipeline, the used filter cloth is washed, filter cloth washing water flows to the first liquid storage tank through the second communicating pipeline, and the filter cloth washing water is stored in the first liquid storage tank. The desulfurization reaction of the sulfur-containing gas in the reactor needs the participation of water, as the reaction proceeds, the water in the reactor is evaporated, and the sulfur slurry also carries out part of the water, so that the water in the reactor is reduced. During sending into the reactor through the filter cloth sparge water of elevator pump storage in with first liquid storage pot, guarantee that the moisture capacity in the reactor can accomplish the reaction, and carry out cyclic utilization to the filter cloth sparge water, avoid polluted environment, extravagant resource, and can reduce cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a desulfurization device provided in an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a desulfurization device provided in an embodiment of the present disclosure;
fig. 3 is a block diagram of a desulfurization device provided in an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a desulfurization device provided in an embodiment of the present disclosure. Referring to fig. 1, the desulfurization apparatus includes a reactor 1, a filter 2, a first liquid storage tank 3, a lift pump 4, a water injection device 5, and a communication pipe 6. The lift pump 4 is located the first liquid storage tank 3, the communicating pipeline 6 comprises a first communicating pipeline 61, a second communicating pipeline 62, a third communicating pipeline 63 and a fourth communicating pipeline 64, the filter 2 is communicated with the bottom outlet of the reactor 1 through the first communicating pipeline 61, the first liquid storage tank 3 is communicated with the bottom outlet of the filter 2 through the second communicating pipeline 62, the lift pump 4 is communicated with the top inlet of the reactor 1 through the third communicating pipeline 63, and the water injection device 5 is communicated with the reactor 1 of the filter 2 through the fourth communicating pipeline 64.
In this implementation, the sulfur-containing gas reacts with oxygen in the reactor 1 and sulfur is generated, the sulfur is deposited at the bottom of the reactor 1 in the form of sulfur slurry and flows to the filter 2 through the first communication pipe 61 and is distributed on the filter cloth of the filter 2, and the sulfur slurry is filtered by the filter cloth. The water injection device 5 injects water into the filter 2 through the fourth communicating pipe 64 and washes the used filter cloth, filter cloth washing water flows to the first liquid storage tank 3 through the second communicating pipe 62, and filter cloth washing water is stored in the first liquid storage tank 3. The desulfurization reaction of the sulfur-containing gas in the reactor 1 requires the participation of water, and as the reaction proceeds, the water in the reactor 1 is evaporated and the sulfur slurry also carries out a part of the water, so that the water in the reactor 1 is reduced. The filter cloth washing water stored in the first liquid storage tank 3 is sent into the reactor 1 through the lifting pump 4, the reaction can be completed by enough water in the reactor 1, the filter cloth washing water is recycled, the environment pollution and the resource waste are avoided, and the cost can be reduced.
In the embodiment of the present disclosure, the water injection device 5 injects water into the filter 2, and only the used filter cloth is washed and no reaction is performed. The composition of the filter cloth flushing water is the same as the liquid composition in the sulphur slurry. Therefore, the injection of the filter cloth washing water into the reactor 1 does not affect the desulfurization reaction of the sulfur-containing gas in the reactor 1.
In the disclosed embodiment, the water injection device 5 may include a water storage tank and a water injection pump that injects water in the water storage tank into the filter 2.
As shown in FIG. 1, the reactor 1 has a cylindrical structure, and the reactor 1 includes an inner cylinder 101, an outer cylinder 102, a sulfur-containing gas distributor 103, and an air distributor 104. Wherein, the inner cylinder 101 and the outer cylinder 102 are coaxially arranged, and the height of the inner cylinder is lower than that of the outer cylinder 102, so that the inner cylinder 101 is communicated with the outer cylinder 102, the sulfur-containing gas distributor 103 is positioned in the inner cylinder 101, and the air distributor 104 is positioned in the outer cylinder 102. The sulfur-containing gas is uniformly distributed in the inner cylinder 101 by the sulfur-containing gas distributor 103, and the blower sends air into the air distributor 104 and uniformly distributes the air in the outer cylinder 102 by the air distributor 104. An absorption zone is formed in the inner cylinder 101, an oxidation zone is formed in the outer cylinder 102, and water is present in both the absorption zone and the oxidation zone. The sulfur-containing gas introduced into the absorption zone reacts with the high-valence complex iron solution in the inner cylinder 101 to form elemental sulfur. Complexing high valent iron ions (Fe) in iron solutions3+) Is reduced into low-valent iron ions (Fe)2+) Forming a stream of the complexed iron solution in a reduced valence state. Air is introduced into the oxidation zone, the air is insoluble in water, so that the gas content in the oxidation zone is higher than that in the absorption zone, and the gas content of the liquid in the inner and outer cylinders is different, so that density difference is generated, the low-valence complex iron solution is pushed to flow to the oxidation zone and react with oxygen in the oxidation zone, so that the low-valence iron ions are oxidized into high-valence iron ions, the oxidation performance of the complex iron solution is recovered, and the complex iron solution can be recycled.
In the embodiment of the disclosure, the sulfur slurry is deposited at the bottom of the reactor 1 and has fluidity, the position of the filter 2 is lower than that of the reactor 1, and the filter 2 is communicated with the bottom of the reactor 1, so that the sulfur slurry can flow on the filter 2 without arranging other lifting devices, and the cost is saved.
Referring again to fig. 1, the desulfurization apparatus further includes a first valve 21, and the first valve 21 is located on the first communication pipe 61.
In this implementation, when the filter 2 is too much sulfur slurry or the filter 2 is damaged, the first valve 21 can be closed to prevent the sulfur slurry in the reactor 1 from flowing to the filter 2. When the filter 2 works normally, the first valve 21 is opened to make the sulfur slurry in the reactor 1 flow to the filter 2 for filtering treatment.
In the embodiment of the disclosure, the filter 2 comprises a distributor (not shown in the figure), a filter cloth 201, a flusher (not shown in the figure), a driver 202 and a motor 203, wherein the filter cloth 201 is positioned on the driver 202, and the motor 203 is connected with the driver 202. The distributor distributes the sulfur slurry evenly on the filter cloth, and the filtering effect is ensured. The sulfur slurry is filtered by the filter cloth 201 to form filtrate and sulfur filter cake, the filtrate can be recycled to the reactor 1 for secondary reaction, and the sulfur filter cake is transported out and forms sulfur after subsequent treatment. The motor 203 provides mechanical energy for the driver 202 to enable the driver 202 to rotate, so that the filter cloth 201 on the driver 202 is driven to rotate, and sulfur filter cakes on the filter cloth 201 are conveyed out. Finally, the used filter cloth 201 is washed by a washer.
In the embodiment of the present disclosure, the filter 2 may further include a vacuum pump and a vacuum box, an adsorption port of the vacuum box is tightly combined with the lower surface of the filter cloth 201, the vacuum pump is communicated with the vacuum box to pump out gas in the vacuum box, so that a negative pressure is formed in the vacuum box, sulfur slurry on the filter cloth is pumped, filtrate in the sulfur slurry flows to the vacuum box, and after the vacuum box finishes adsorbing the sulfur slurry, the driver 202 transports the sulfur filter cake on the filter cloth 201 out.
As shown in FIG. 1, the filter 2 may further comprise a sulfur tank 204, and the sulfur tank 204 may be used for temporarily storing the sulfur filter cake.
In the embodiment of the disclosure, the mass fraction of the sulfur in the sulfur slurry is between 5% and 15%, and the water content of the sulfur filter cake prepared by the filter 2 is less than 35%.
As shown in figure 1, in the vertical direction a, the first liquid storage tank 3 is positioned below the filter 2, so that filter cloth washing water in the filter 2 can also flow to the first liquid storage tank 3 by means of gravity, an additional lifting device is not required to be arranged, and the cost is saved. Since the first tank 3 is located below the filter 2 and the first tank 3 is used for storing filter cloth washing water, the first tank 3 can also be called a washing water low tank.
As shown in fig. 1, the second communicating pipe 62 is provided with a second valve 22, and when the liquid level in the first liquid storage tank 3 is too high, the second valve 22 can be closed to avoid the liquid in the first liquid storage tank 3 from overflowing.
Fig. 2 is a schematic structural diagram of a desulfurization device provided in an embodiment of the present disclosure. Referring to fig. 2, a first level gauge 8 is arranged within the reactor 1. Fig. 3 is a block diagram of a desulfurization device provided in an embodiment of the present disclosure. Referring to fig. 3, the desulfurization apparatus further includes a controller 7. The controller 7 is respectively electrically connected with the first liquid level meter 8 and the control end of the lift pump 4, and the controller 7 is configured to control the lift pump 4 to send the liquid in the first liquid storage tank 3 into the reactor 1 when the liquid level detected by the first liquid level meter 8 is lower than a first liquid level value.
In this implementation, a first level gauge 8 is arranged in the reactor 1, it being possible to monitor the level height of the liquid in the reactor 1. When the liquid level in the reactor 1 is lower than the first liquid level value, the first liquid level meter 8 provides an electric signal for the controller 7, the controller 7 controls the lifting pump 4 to be opened, filter cloth washing water stored in the first liquid storage tank 3 is injected into the reactor 1 through the lifting pump 4, the amount of the liquid in the reactor 1 is increased, and the reaction can be carried out normally.
Referring to fig. 2 again, a second liquid level meter 9 is further arranged in the first liquid storage tank 3, the communication pipeline 6 further comprises a fifth communication pipeline 65, and the water injection device 5 is communicated with the reactor 1 through the fifth communication pipeline 65. Referring again to fig. 3, the controller 7 is in electrical and electrical connection with the second level gauge 9, the water injection means 5, respectively. And a controller 7 configured to control the water injection device 5 to inject water into the reactor 1 when the liquid level detected by the second liquid level gauge 9 is lower than the second liquid level value and the liquid level detected by the first liquid level gauge 8 is lower than the first liquid level value.
In this implementation, a second level gauge 9 is arranged in the first reservoir 3, and the level of the liquid in the first reservoir 3 can be monitored. When the liquid level of the liquid in the reactor 1 is lower than the first liquid level value, it indicates that the water in the reactor 1 is less, and water needs to be injected into the reactor 1, and if the liquid level in the first liquid storage tank 3 is lower than the second liquid level value, it indicates that the filter cloth washing water amount stored in the first liquid storage tank 3 is too little, and if the lift pump 4 is turned on, the lift pump 4 may be damaged. At this time, the controller 7 may control the water injection device 5 to inject water into the reactor 1 from the water injection device 5, thereby increasing the amount of the liquid in the reactor 1 and ensuring that the reaction can be normally performed.
Referring again to fig. 2, the desulfurization apparatus further includes a second reservoir tank 10, a first control valve 11, and a second control valve 12, and the communication pipe 6 further includes a sixth communication pipe 66. One end of the sixth communicating pipe 66 is communicated with the inlet at the top of the second liquid storage tank 10, and the other end of the sixth communicating pipe 66 is connected to the third communicating pipe 63. The first control valve 11 is located on the sixth communicating pipe 66, and the second control valve 12 is located on the third communicating pipe 63 between the connecting point of the third communicating pipe 63 and the sixth communicating pipe 66 and the reactor 1.
In this implementation, when the liquid level in the reactor 1 is higher than the third liquid level value and the liquid level in the first liquid storage tank 3 is higher than the fourth liquid level value, the liquid in the first liquid storage tank 3 can be sent into the second liquid storage tank 10 through the lift pump 4 for storage, thereby avoiding the liquid levels in the reactor 1 and the first liquid storage tank 3 from being too high, and enabling the liquid in the reactor 1 and the first liquid storage tank 3 to overflow.
For example, when it is desired to deliver liquid to the second liquid storage tank 10, the second control valve 12 may be closed and the first control valve 11 may be opened, so that the lift pump 4 can only deliver liquid from the first liquid storage tank 3 to the second liquid storage tank 10. When it is desired to feed liquid into the reactor 1, the first control valve 11 may be closed and the second control valve 12 may be opened, so that the lift pump 4 can feed only the liquid in the first reservoir tank 3 into the reactor 1.
For example, the first control valve 11 and the second control valve 12 may be both a manual control valve and an electric control valve.
As shown in fig. 3, a third valve 23 is further disposed on the third communicating pipe 63, and the flow of the liquid in the third communicating pipe 63 is controlled by the second control valve 12 and the third valve 23, and when one of the valves is damaged, the flow can be controlled by the second valve, which is safer.
For example, a fourth valve 24 may be further disposed on the sixth communication channel 66, and the function of the fourth valve is similar to that of the third valve 23, so as to ensure safer control.
Referring to fig. 2 again, the desulfurization device further includes a third control valve 13, the communication pipeline 6 further includes a seventh communication pipeline 67, in the vertical direction, the second liquid storage tank 10 is located above the first liquid storage tank 3, the first liquid storage tank 3 is communicated with the bottom outlet of the second liquid storage tank 10 through the seventh communication pipeline 67, and the third control valve 13 is located on the seventh communication pipeline 67.
In this implementation, the bottom of the second reservoir 10 is communicated with the first reservoir 3 through a seventh communication pipe 67, and a third control valve 13 is disposed on the seventh communication pipe 67, so that when the liquid level in the first reservoir 3 is low, the third control valve 13 can be opened, and the filter cloth washing water stored in the second reservoir 10 flows into the first reservoir 3 by gravity.
As shown in fig. 1, a fifth valve 25 may be further disposed on the seventh communication channel 67, and the third control valve 13 and the fifth valve 25 jointly control the flow of the liquid in the seventh communication channel 67 to be safer.
Referring again to fig. 3, the first control valve 11, the second control valve 12 and the third control valve 13 are all electrically controlled valves, and the first control valve 11, the second control valve 12 and the third control valve 13 are all electrically connected with the controller 7.
In this implementation, the controller 7 is electrically connected to the first control valve 11, the second control valve 12, and the third control valve 13, respectively, and the controller 7 can control the opening and closing of the first control valve 11, the second control valve 12, and the third control valve 13, so as to ensure the effectiveness and timeliness of the control.
Referring again to fig. 2, the desulfurization apparatus further includes a first check valve 14, and the first check valve 14 is located on the third communication pipe 63 between a connection point of the third communication pipe 63 and the sixth communication pipe 66 and the lift pump 4. The first check valve 14 is configured to be in an open state when the lift pump 4 is on, and to be in a closed state when the lift pump 4 is off.
In this implementation, when the lift pump 4 is operated, the first check valve 14 is in an open state, and the liquid in the first liquid storage tank 3 can be sent to the second liquid storage tank 10 or the reactor 1 through the lift pump 4. When the lift pump 4 is closed, the first one-way valve 14 is in a closed state, so that the phenomenon that liquid in the reactor 1 or the second liquid storage tank 10 flows back to the first liquid storage tank 3 due to overlarge pressure in the reactor 1 or the second liquid storage tank 10 is avoided.
As shown in fig. 1, the desulfurization apparatus may further include a reducer union 26, and the reducer union 26 is located between the third communication pipe 63 and the outlet of the lift pump 4.
In this embodiment, the reducer union 26 is provided, and the third communicating pipe 63 with a larger diameter can be connected through the reducer union 26, so that more liquid can flow through the third communicating pipe 63, and the amount of liquid conveyed to the sixth communicating pipe 66 is ensured to be sufficient.
As shown in fig. 1, the desulfurization apparatus may further include a pressure gauge 27, and the pressure gauge 27 is located on the third communication pipe 63 and between a connection point of the third communication pipe 63 and the sixth communication pipe 66 and the reducer union 26.
The pressure gauge 27 can detect the pressure in the third communicating pipe 63, and avoid the pressure in the third communicating pipe 63 from being too large, so that the third communicating pipe 63 is damaged.
Referring again to fig. 2, the desulfurization apparatus further includes a third liquid level meter 15, and the third liquid level meter 15 is located in the second liquid storage tank 10. Referring again to fig. 3, the third level gauge 15 is electrically connected to the controller 7. And the controller 7 is configured to control the lifting pump 4 to send the liquid in the first liquid storage tank 3 into the second liquid storage tank 10 when the liquid level detected by the first liquid level meter 8 is higher than a third liquid level value, the liquid level detected by the second liquid level meter 9 is higher than a fourth liquid level value, and the liquid level detected by the third liquid level meter 15 is lower than a fifth liquid level value, wherein the third liquid level value is greater than the first liquid level value, and the fourth liquid level value is greater than the second liquid level value.
In this implementation, a third liquid level meter 15 is arranged in the second liquid storage tank 10, and the liquid level in the second liquid storage tank 10 can be monitored through the third liquid level meter 15. The liquid level in the first liquid storage tank 3 is higher than the fourth liquid level value, and the liquid level in the reactor 1 is higher than the third liquid level value, which indicates that at this time, the first liquid storage tank 3 and the reactor 1 have more liquid, and no liquid needs to be injected into the reactor 1. If the liquid level in the second liquid storage tank 10 is lower than the fifth liquid level value, the controller 7 can control the lift pump 4 to send the liquid in the first liquid storage tank 3 into the second liquid storage tank 10, so as to avoid the overflow of the liquid in the first liquid storage tank 3.
The first gauge 8, the second gauge 9 and the third gauge 15 are, for example, electronic gauges, which can send electrical signals to the controller 7.
Referring again to fig. 2, the desulfurization apparatus further includes a fourth control valve 16 and a fifth control valve 17, one end of a fifth communicating pipe 65 is communicated with the top inlet of the reactor 1, the other end of the fifth communicating pipe 65 is communicated with a fourth communicating pipe 64, the fourth control valve 16 is positioned on the fifth communicating pipe 65, and the fifth control valve 17 is positioned on the fourth communicating pipe 64 and between the junction of the fourth communicating pipe 64 and the fifth communicating pipe 65 and the filter 2.
In this embodiment, the fourth control valve 16 is arranged on the fifth communication channel 65, the fifth control valve 17 is arranged on the fourth communication channel 64, and the flow direction of the water injected by the water injector 5 can be controlled by the opening and closing of the fourth control valve 16 and the fifth control valve 17.
Illustratively, when water is required to be injected into the reactor 1, but the filter cloth washing water stored in the first reservoir 3 and the second reservoir 10 is insufficient, and the filter 2 does not require additional water replenishment, the fourth control valve 16 is opened and the fifth control valve 17 is closed, so that the water injection means 5 injects water into the reactor 1, not into the filter 2. Similarly, when no water is required to be injected into the reactor 1 and additional make-up water is required in the filter 2, the fourth control valve 16 is closed and the fifth control valve 17 is opened, so that the water injection means 5 injects water into the filter 2 without injecting water into the reactor 1. It is of course also possible to open both the fourth control valve 16 and the fifth control valve 17 and to feed water into the reactor 1 and the filter 2.
Referring again to fig. 2, the fourth control valve 16 and the fifth control valve 17 are both electrically controlled valves, and the fourth control valve 16 and the fifth control valve 17 are both electrically connected to the controller 7.
In this implementation, the fourth control valve 16 and the fifth control valve 17 are controlled by electric signals, ensuring the effectiveness and timeliness of the control.
Referring again to fig. 2, the desulfurization unit may also include a second one-way valve 28. The second check valve 28 is located between the reactor 1 and the junction of the fourth communication conduit 64 and the fifth communication conduit 65.
In this implementation, a second one-way valve 28 is arranged between the water injection means 5 and the reactor 1, so that water will only flow from the water injection means 5 to the reactor 1, and in case of an excessive pressure in the reactor 1, no liquid will flow from the reactor 1 to the water injection means 5.
As shown in fig. 1, a flange 29 is further disposed on the fifth communicating pipe 65. In this implementation, the reactor 1 has an opening in the side wall, at which the pipe is welded, and the fifth communicating pipe 65 is communicated with the welded pipe by the flange 29, so that the fifth communicating pipe 65 is communicated with the reactor 1.
Illustratively, the third communicating conduit 63 and the first communicating conduit 61 may also communicate with the reactor 1 in the same manner.
As shown in fig. 1, the fourth communication conduit 64 may further be provided with a sixth valve 30, the sixth valve 30 being located between the connection of the fourth communication conduit 64 and the fifth communication conduit 65 and the water filling device 5.
In this implementation, upon failure of the fourth and fifth control valves 16, 17, the flow of liquid in the fourth and fifth communication conduits 64, 65 may be controlled by the sixth valve 30.
Referring again to fig. 2, the desulfurization apparatus further includes a sewage tank truck 18 and a sixth control valve 19, and the communication pipe 6 further includes an eighth communication pipe 68. An eighth communicating pipe 68 communicates with the lift pump 4 and the sewage tank truck 18, respectively, and a sixth control valve 19 is located on the eighth communicating pipe 68.
In this implementation, by arranging the sewage tank truck 18, when the liquid levels in the reactor 1, the first liquid storage tank 3 and the second liquid storage tank 10 are all too high, the filter cloth washing water in the first liquid storage tank 3 can be conveyed to the sewage tank truck 18 by the lift pump 4 for treatment and discharge.
Illustratively, the sewage tanker 18 can deliver the sewage to a sewage treatment plant, and the sewage treatment plant can discharge the sewage after the sewage is treated, so as to avoid polluting the environment.
Although the sewage tank truck 18 is arranged in the desulfurization device disclosed by the invention, sewage is required to be treated and then discharged, part of filter cloth flushing water is recycled by the desulfurization device disclosed by the invention, the amount of sewage treated by a sewage treatment plant is reduced, and the cost can be saved.
As shown in fig. 1, the eighth communication pipe 68 may communicate with the third communication pipe 63, thereby communicating with the lift pump 4. The sixth control valve 19 is located between the junction of the eighth communication pipe 68 and the third communication pipe 63 and the sewage tank truck 18.
Referring again to fig. 3, the sixth control valve 19 is an electrically controlled valve, and the sixth control valve 19 is electrically connected to the controller 7.
In this implementation, the sixth control valve 19 is electrically controlled by the controller 7, ensuring effectiveness and timeliness of control.
Referring again to fig. 2, the desulfurization apparatus further includes a lower tank 20, and the first reservoir tank 3 is located in the lower tank 20.
In this implementation, the low-level tank 20 is provided, so that when the liquid level in the first liquid storage tank 3 is too high and it is too late to inject the liquid in the first liquid storage tank 3 into the second liquid storage tank 10, the reactor 1 or the sewage tank truck 18, the liquid in the first liquid storage tank 3 can flow into the low-level tank 20, and the liquid in the first liquid storage tank 3 is prevented from flowing to the ground to pollute the environment.
In the embodiment of the present disclosure, the low tank 20 is used in case of accident, and the low tank 20 can be used to temporarily store liquid to prevent the liquid from flowing to the ground to pollute the environment.
In this disclosed embodiment, can also arrange hydrogen sulfide alarm in the low level groove 20, send out the warning sound when the hydrogen sulfide concentration of the liquid in low level groove 20 exceeds standard, avoid reminding the staff to keep away from, avoid hydrogen sulfide concentration too high to cause the staff to be poisoned.
As shown in fig. 1, the bottom of the first liquid storage tank 3 can flow into the groove 2001 of the low tank 20 through the ninth communication pipe 69, and when the first liquid storage tank 3 is overhauled, the liquid in the first liquid storage tank 3 can be drained through the ninth communication pipe 69, so that the overhaul is facilitated.
Illustratively, the ninth communication pipe 69 is provided with a seventh valve 31, when the first liquid storage tank 3 needs to be repaired, the seventh valve 31 is opened to allow the liquid in the first liquid storage tank 3 to flow out, and during normal operation, the seventh valve 31 is in a closed state.
In the related art, when the amount of the latent sulfur exiting the device is 1 ton per day (t/d), the amount of water to be replenished into the reactor is 10 cubic meters per day (m)3And d), after the desulfurization device disclosed by the invention is adopted, water supplementing operation is carried out according to the liquid level in the reactor 1, filter cloth washing water is preferentially used for supplementing water, the amount of supplemented water can be reduced, the external discharge amount of the filter cloth washing water is reduced, manual operation is not needed, and the desulfurization device can be used in areas with water source shortage and areas with difficulty in sewage treatment.
The following explains eight working conditions of the desulfurization device of the present disclosure in combination with the desulfurization device of the present disclosure:
the working condition I is as follows: the first reservoir 3 cannot supply a sufficient amount of filter cloth washing water.
When the first storage tank 3 cannot provide enough filter cloth washing water for the reactor 1, the second storage tank 10 cannot supplement the filter cloth washing water for the first storage tank 3, and the reactor 1 needs to supplement the washing water, the water injection device 5 is started, the fourth control valve 16 is opened, and water is supplemented for the reactor 1 through the water injection device 5.
Working conditions are as follows: the liquid level in the reactor 1 is low.
When the liquid Level of the reactor 1 measured by the first liquid Level meter 8 is equal to or lower than a set value (namely a first liquid Level value) of a liquid Level Low Limit Alarm (LAL), the second control valve 12 is opened, the first control valve 11 and the sixth control valve 19 are closed, the lift pump 4 is started at the same time, and filter cloth washing water in the first liquid storage tank 3 is injected into the reactor 1. Wherein LAL represents the lower level limit of the reactor 1.
Working conditions are as follows: the liquid level in the reactor 1 is higher.
When the first liquid Level meter 8 detects that the liquid Level of the reactor 1 is equal to or higher than a set value (namely a third liquid Level value) of a liquid Level High Limit Alarm (LAH), the second control valve 12 and the sixth control valve 19 are closed, and the first control valve 11 is opened. The surplus filter cloth washing water is sent to the second reservoir tank 10 to be temporarily stored. Wherein LAH represents the upper level of the reactor 1.
Working conditions are as follows: the liquid level of the first liquid storage tank 3 is lower.
When the second liquid Level meter 9 detects that the liquid Level of the first liquid storage tank 3 is equal to or lower than a set value (i.e. a second liquid Level value) of a Level Alarm Low (LALL for short), the third control valve 13 is opened to enable the liquid in the second liquid storage tank 10 to flow to the first liquid storage tank 3. Wherein LALL represents the lower level limit of the first reservoir 3.
Working condition five: the liquid level of the first liquid storage tank 3 is lower, and the reactor 1 does not need to be supplemented with water.
And when the second liquid level meter 9 detects that the liquid level of the first liquid storage tank 3 is equal to or lower than the second liquid level value, the lifting pump 4 is stopped.
Working condition six: the first liquid storage tank 3 has higher liquid level.
When the second liquid Level meter 9 measures that the liquid Level of the first liquid storage tank 3 is equal to or higher than a set value (i.e. a fourth liquid Level value) of a Level Alarm High (LAHH) for short, the third control valve 13 is closed. Wherein LAHH represents the upper level limit of the first reservoir 3.
A seventh working condition: the first liquid storage tank 3 is high in liquid level and the reactor 1 does not need water supplement.
When the second liquid level meter 9 detects that the liquid level of the first liquid storage tank 3 is equal to or higher than the fourth liquid level value, the lift pump 4 is started, the third control valve 13 is closed, and if the first control valve 11 is closed, the second control valve 12 is opened.
Working conditions are eight: the second liquid storage tank 10 has a higher liquid level.
And opening the sixth control valve 19, closing the first control valve 11, the second control valve 12 and the third control valve 13, starting the lifting pump 4, and transferring the filter cloth washing water in the first liquid storage tank 3 to the sewage tank truck 18 for outward transportation.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims (10)

1. The desulfurization device is characterized by comprising a reactor (1), a filter (2), a first liquid storage tank (3), a lift pump (4), a water injection device (5) and a communicating pipeline (6);
the lift pump (4) is located in the first liquid storage tank (3), the communicating pipeline (6) comprises a first communicating pipeline (61), a second communicating pipeline (62), a third communicating pipeline (63) and a fourth communicating pipeline (64), the filter (2) is communicated with a bottom outlet of the reactor (1) through the first communicating pipeline (61), the first liquid storage tank (3) is communicated with a bottom outlet of the filter (2) through the second communicating pipeline (62), the lift pump (4) is communicated with a top inlet of the reactor (1) through the third communicating pipeline (63), and the water injection device (5) is communicated with the filter (2) through the fourth communicating pipeline (64).
2. A desulfurization unit in accordance with claim 1, characterized in that it further comprises a controller (7), a first level meter (8) being arranged inside said reactor (1);
the controller (7) is configured to control the lifting pump (4) to feed the liquid in the first liquid storage tank (3) into the reactor (1) when the liquid level detected by the first liquid level meter (8) is lower than a first liquid level value.
3. The desulfurization device according to claim 2, characterized in that a second liquid level meter (9) is further arranged in the first liquid storage tank (3), the communication pipeline (6) further comprises a fifth communication pipeline (65), and the water injection device (5) is communicated with the reactor (1) through the fifth communication pipeline (65);
the controller (7) is configured to control the water injection device (5) to inject water into the reactor (1) when the liquid level detected by the second liquid level meter (9) is lower than a second liquid level value and the liquid level detected by the first liquid level meter (8) is lower than the first liquid level value.
4. A desulfurization apparatus according to claim 3, characterized in that said desulfurization apparatus further comprises a second reservoir tank (10), a first control valve (11) and a second control valve (12), said communication conduit (6) further comprises a sixth communication conduit (66);
one end of the sixth communication pipeline (66) is communicated with an inlet at the top of the second liquid storage tank (10), and the other end of the sixth communication pipeline (66) is connected to the third communication pipeline (63);
the first control valve (11) is positioned on the sixth communication pipeline (66), the second control valve (12) is positioned on the third communication pipeline (63), and the second control valve (12) is positioned between the connection point of the third communication pipeline (63) and the sixth communication pipeline (66) and the reactor (1).
5. Desulphurization device according to claim 4, further comprising a third control valve (13), wherein the communication conduit (6) further comprises a seventh communication conduit (67),
in the vertical direction (a), the second liquid storage tank (10) is positioned above the first liquid storage tank (3), the first liquid storage tank (3) is communicated with a bottom outlet of the second liquid storage tank (10) through a seventh communication pipeline (67), and the third control valve (13) is positioned on the seventh communication pipeline (67).
6. Desulphurization device according to claim 4, further comprising a first one-way valve (14), the first one-way valve (14) being located on the third communication conduit (63), the first one-way valve (14) being located between the connection point of the third communication conduit (63) with the sixth communication conduit (66) and the lift pump (4);
the first check valve (14) is configured to be in an open state when the lift pump (4) is open and to be in a closed state when the lift pump (4) is shut down.
7. Desulphurization device according to claim 4, further comprising a third level gauge (15), said third level gauge (15) being located within said second liquid storage tank (10);
the controller (7) is configured to control the lift pump (4) to feed the liquid in the first liquid storage tank (3) into the second liquid storage tank (10) when the liquid level detected by the first liquid level meter (8) is higher than a third level value, the liquid level detected by the second liquid level meter (9) is higher than a fourth level value, and the liquid level detected by the third liquid level meter (15) is lower than a fifth level value, wherein the third level value is larger than the first level value, and the fourth level value is larger than the second level value.
8. A desulfurization apparatus according to any one of claims 3 to 7, characterized in that it further comprises a fourth control valve (16) and a fifth control valve (17), one end of said fifth communication conduit (65) being in communication with the top inlet of said reactor (1), the other end of said fifth communication conduit (65) being in communication with said fourth communication conduit (64);
the fourth control valve (16) is positioned on the fifth communicating pipeline (65), the fifth control valve (17) is positioned on the fourth communicating pipeline (64), and the fifth control valve (17) is positioned between the connecting position of the fourth communicating pipeline (64) and the fifth communicating pipeline (65) and the filtering machine (2).
9. Desulphurization device according to any one of claims 1 to 7, further comprising a slop tanker (18) and a sixth control valve (19), wherein the communication conduit (6) further comprises an eighth communication conduit (68);
the eighth communication pipeline (68) is respectively communicated with the lifting pump (4) and the sewage tank truck (18), and the sixth control valve (19) is positioned on the eighth communication pipeline (68).
10. Desulfurization unit according to any one of claims 1 to 7, characterized in that it further comprises a lower tank (20), said first tank (3) being located in said lower tank (20).
CN202010365427.7A 2020-04-30 2020-04-30 Desulfurizing device Active CN113578015B (en)

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JPH1190172A (en) * 1997-09-24 1999-04-06 Chiyoda Corp Control method and controller for absorbing liquid level in flue gas desulfurizer
CN1221645A (en) * 1997-08-25 1999-07-07 三菱重工业株式会社 Liquid bleeding device and method for controlling concentration of slurry in wet flue gas desulfurization system
CN205517191U (en) * 2016-01-27 2016-08-31 中国石油天然气股份有限公司 Carry out desulfurated device to sulfurous gas
CN108219858A (en) * 2018-02-22 2018-06-29 中冶焦耐(大连)工程技术有限公司 A kind of doctor solution medicine system and method for fine purification technique for coke oven gas
CN109045813A (en) * 2018-08-08 2018-12-21 中国石油化工股份有限公司 A kind of vacuum belt filter ELUTION METHOD
CN209108933U (en) * 2018-09-27 2019-07-16 北京国电龙源环保工程有限公司 Limestone-gypsum Wet Flue Gas Desulfurization Process slurries processing system
CN209475983U (en) * 2019-01-21 2019-10-11 山东科达环境工程有限公司 A kind of liquid level and density regulating apparatus of desulfurization slurry

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1221645A (en) * 1997-08-25 1999-07-07 三菱重工业株式会社 Liquid bleeding device and method for controlling concentration of slurry in wet flue gas desulfurization system
JPH1190172A (en) * 1997-09-24 1999-04-06 Chiyoda Corp Control method and controller for absorbing liquid level in flue gas desulfurizer
CN205517191U (en) * 2016-01-27 2016-08-31 中国石油天然气股份有限公司 Carry out desulfurated device to sulfurous gas
CN108219858A (en) * 2018-02-22 2018-06-29 中冶焦耐(大连)工程技术有限公司 A kind of doctor solution medicine system and method for fine purification technique for coke oven gas
CN109045813A (en) * 2018-08-08 2018-12-21 中国石油化工股份有限公司 A kind of vacuum belt filter ELUTION METHOD
CN209108933U (en) * 2018-09-27 2019-07-16 北京国电龙源环保工程有限公司 Limestone-gypsum Wet Flue Gas Desulfurization Process slurries processing system
CN209475983U (en) * 2019-01-21 2019-10-11 山东科达环境工程有限公司 A kind of liquid level and density regulating apparatus of desulfurization slurry

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