Acid gas treatment system

Abstract

According to the acid gas treatment system, acid gas enters from one end of an acid gas pipeline, liquid naturally condensed from the acid gas flows out from an accumulated liquid discharging opening of the acid gas pipeline and sequentially flows into a liquid collecting pipe and a containing cavity of a first container, no more accumulated liquid exists in the acid gas pipeline, and the situation that the acid gas pipeline is blocked by the accumulated liquid is not prone to occurring; and subsequent acid gas treatment is facilitated. The accumulated liquid in the acid gas is discharged from the accumulated liquid outlet, the acid gas can penetrate through the acid gas pipeline and enter the heating channel of the preheater from the other end of the acid gas pipeline, and the heating channel of the preheater can heat the acid gas, so that the possibility that water in the acid gas is condensed to form the accumulated liquid is reduced; and the heated acid gas enters the combustion furnace from the other end of the heating channel for combustion treatment. The first container reduces the moisture content in the acid gas, and the preheater reduces the possibility of condensation in the acid gas, so that the possibility of blockage of an acid gas pipeline due to continuous accumulation of accumulated liquid can be effectively reduced, normal introduction and treatment of the acid gas are ensured, and the treatment efficiency of the acid gas is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coke oven gas desulfurization, and particularly relates to an acid gas treatment system. BACKGROUND

[0002] Coke oven gas desulfurization produces acid gas containing hydrogen sulfide, hydrogen cyanide and other acidic substances, and the acid gas is then introduced into a combustion furnace for combustion treatment.

[0003] At present, a dehydrator such as a mist catcher is arranged in front of the combustion furnace to dehydrate the acid gas, so as to prevent the dehydrator and the pipeline where the liquid is accumulated from being blocked by the liquid accumulated due to the high water content of the acid gas, and the acid gas treatment efficiency is affected. CONTENT OF THE UTILITY MODEL

[0004] The application aims to at least solve the technical problem that the acid gas treatment efficiency is affected to some extent. To this end, the application provides an acid gas treatment system.

[0005] The application provides an acid gas treatment system, which comprises:

[0006] An acid gas pipeline is provided with a liquid accumulation discharge port, and the liquid accumulation discharge port is located between two ends of the acid gas pipeline.

[0007] A liquid collecting pipe is in communication with one end of the liquid accumulation discharge port.

[0008] A first container is provided with a containing cavity in communication with the other end of the liquid collecting pipe.

[0009] A preheater and a combustion furnace are provided, and the preheater is provided with a heating channel, one end of the heating channel is in communication with one end of the acid gas pipeline, and the other end of the heating channel is in communication with the combustion furnace.

[0010] In some or certain embodiments, the containing cavity is used to form a water seal, the other end of the liquid collecting pipe is configured as an insertion end, and the insertion end is inserted into the containing cavity.

[0011] In some or certain embodiments, the containing cavity is in a columnar shape, and the two ends are respectively configured as a top end and a bottom end, the insertion end is inserted into the containing cavity, and the distance between the insertion end and the top end is greater than the distance between the insertion end and the bottom end.

[0012] In some or certain embodiments, the liquid collecting pipe is controllable in opening and closing, and the acid gas treatment system further comprises:

[0013] A flushing pipe controllable in opening and closing is in communication with the hole wall of the liquid collecting pipe at one end.

[0014] In some or certain embodiments, the first container is provided with a liquid discharge port in communication with the containing cavity, and the acid gas treatment system further comprises:

[0015] The liquid collecting container is provided with a liquid collecting cavity in communication with the liquid outlet.

[0016] In some or certain embodiments, the acid gas pipeline is a bent pipe, and the liquid discharge outlet is adjacent to a bending portion of the acid gas pipeline.

[0017] In some or certain embodiments, the preheater is a heat exchanger, and the heat exchanger is provided with at least one heat exchange channel, one of the heat exchange channels being configured as the heating channel.

[0018] In some or certain embodiments, the heat exchanger comprises:

[0019] The shell is provided with a heat exchange cavity;

[0020] The first heat exchange pipe is arranged in the heat exchange cavity and extends out of the shell at both ends, and the pipe hole of the first heat exchange pipe is configured as the heat exchange channel;

[0021] The second heat exchange pipe is arranged in the heat exchange cavity and extends out of the shell at both ends, and the second heat exchange pipe is in contact with the first heat exchange pipe.

[0022] In some or certain embodiments, the acid gas treatment system further comprises: the acid gas treatment system further comprises a medium container provided with an output end and a recovery container provided with a recovery end, and the output end and the recovery end are in communication with both ends of the second heat exchange pipe, respectively.

[0023] In some or certain embodiments, the acid gas treatment system further comprises:

[0024] The on-off controllable transmission pipe is in communication with the other end of the heating channel and the combustion furnace at both ends, respectively.

[0025] According to one or more embodiments of the present application, the following beneficial effects are provided:

[0026] The acid gas can enter from one end of the acid gas pipeline, and the liquid condensed by the acid gas in the acid gas pipeline can be discharged from the liquid discharge port of the acid gas pipeline and enter the liquid collecting pipe in communication with the liquid discharge port at one end, and then enter the containing cavity of the first container in communication with the other end of the liquid collecting pipe, and be collected by the first container. The liquid accumulated by the acid gas in the acid gas pipeline is discharged and collected by the first container, so that there is no much liquid accumulated in the acid gas pipeline, and the acid gas pipeline is not easy to be blocked by the accumulated liquid, so that the stable introduction of the acid gas can be ensured to ensure the processing efficiency of the acid gas. The accumulated liquid in the acid gas is discharged from the liquid discharge port, and the acid gas can enter the heating channel of the preheater from the other end of the acid gas pipeline. The heating channel of the preheater can heat the acid gas to reduce the possibility of condensation of water in the acid gas to form accumulated liquid. The heated acid gas enters the combustion furnace from the other end of the heating channel for combustion treatment. The first container reduces the water content in the acid gas, and the preheater reduces the condensation possibility of the acid gas, so that the dehydrator is excluded, and the accumulated liquid will not be condensed on the dehydrator to cause blockage. The possibility of continuous accumulation of the accumulated liquid to block the acid gas pipeline can be effectively reduced, the normal introduction and treatment of the acid gas can be ensured, and the processing efficiency of the acid gas can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The structure of an acid gas treatment system in some embodiments or certain embodiments of the present application is shown.

[0029] The reference signs are as follows: 1, acid gas pipeline; 101, liquid discharge port; 102, bending part; 2, liquid collecting pipe; 201, insertion end; 3, first container; 301, containing cavity; 302, liquid discharge port; 4, preheater; 401, shell; 402, first heat exchange pipe; 403, second heat exchange pipe; 5, combustion furnace; 6, flushing pipe; 7, control valve; 8, liquid collecting container; 9, medium container; 10, recovery container; 11, transmission pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0031] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0034] The present application will be described below with reference to the accompanying drawings:

[0035] Figure 1 The structure of the acid gas treatment system in some embodiments or certain embodiments of the present application is shown, and the structure of the acid gas treatment system in some embodiments or certain embodiments of the present application is shown. Figure 1 The embodiment of the present application provides an acid gas treatment system, which comprises:

[0036] The acid gas pipeline 1 is provided with a liquid accumulation discharge port 101, and the liquid accumulation discharge port 101 is located between the two ends of the acid gas pipeline 1.

[0037] The liquid collecting pipe 2 is in communication with the liquid accumulation discharge port 101 at one end.

[0038] The first container 3 is provided with a containing cavity 301 in communication with the other end of the liquid collecting pipe 2.

[0039] The preheater 4 and the combustion furnace 5 are provided with a heating channel, one end of the heating channel is in communication with one end of the acid gas pipeline 1, and the other end of the heating channel is communicated to the combustion furnace 5.

[0040] The acid gas can enter from one end of the acid gas pipeline 1, and the liquid condensed by the acid gas in the acid gas pipeline 1 can be discharged from the liquid discharge outlet 101 of the acid gas pipeline 1 and enter the liquid collecting pipe 2 communicated with the other end of the liquid collecting pipe 2, and then enter the containing cavity 301 of the first container 3 communicated with the other end of the liquid collecting pipe 2, and be collected by the first container 3. The liquid accumulated in the acid gas pipeline 1 is discharged and collected by the first container 3, so that there is no much liquid accumulated in the acid gas pipeline 1, and the acid gas pipeline 1 is not easy to be blocked by the accumulated liquid, which can ensure the stable inlet of the acid gas and the processing efficiency of the acid gas. The liquid accumulated in the acid gas is discharged from the liquid discharge outlet 101, and the acid gas can enter the heating channel of the preheater 4 from the other end of the acid gas pipeline 1. The heating channel of the preheater 4 can heat the acid gas to reduce the possibility of condensation of water in the acid gas to form liquid. The heated acid gas enters the combustion furnace 5 from the other end of the heating channel for combustion treatment. The first container 3 reduces the water content in the acid gas, and the preheater 4 reduces the condensation possibility of the acid gas, so that the dehydrator is excluded, and the liquid is not condensed on the dehydrator to cause blockage. The possibility of continuous accumulation of the liquid to block the acid gas pipeline 1 can be effectively reduced, the normal inlet and treatment of the acid gas can be ensured, and the processing efficiency of the acid gas can be effectively improved.

[0041] It should be noted that the acid gas will usually be subjected to condensation treatment before entering the combustion furnace 5 and a section of the acid gas pipeline 1 before the acid gas enters the combustion furnace 5. Therefore, the temperature of the acid gas entering the acid gas pipeline 1 is usually about 20 degrees Celsius. The water in the acid gas with low temperature may be naturally condensed to form liquid after the acid gas enters the acid gas pipeline 1, which needs to be discharged through the liquid discharge outlet 101.

[0042] In some or certain embodiments, the acid gas treatment system can further include a condenser (not shown in the figure). The two ends of the acid gas pipeline 1 can be respectively communicated with the outlet of the condenser and the heating channel in the preheater 4. The condenser can be a gas-liquid separator or the like. The acid gas enters the gas-liquid separator and enters the acid gas pipeline from the gas outlet of the gas-liquid separator.

[0043] In some or certain embodiments, the containing cavity 301 is used to form a water seal, and the other end of the liquid collecting pipe 2 is configured as an insertion end 201 inserted into the containing cavity 301.

[0044] The containing cavity 301 of the first container 3 can be used to form a water seal. Liquid can be introduced into the containing cavity 301 to form a water seal. The other end of the liquid collecting pipe 2 is configured as an insertion end 201 inserted into the containing cavity 301. The insertion end 201 can be inserted into the liquid in the containing cavity 301 to form a water seal. The insertion end 201 can receive the liquid accumulated in the acid gas pipeline 1 while ensuring the sealing of the acid gas pipeline 1. The safety of the acid gas treatment can be improved while ensuring the processing efficiency of the acid gas.

[0045] In some or certain embodiments, the accommodating cavity 301 is in a columnar shape, and two ends thereof are configured as a top end and a bottom end respectively, the insertion end 201 is inserted into the accommodating cavity 301, and a distance between the insertion end 201 and the top end is greater than a distance between the insertion end 201 and the bottom end. The sealing effect on the sour gas in the sour gas pipeline 1 can be improved.

[0046] In some or certain embodiments, the first container 3 can also be a water seal container of different types, and the accommodating cavity 301 of the first container 3 can also be set as a cube or a hemisphere, etc. according to requirements. The sealing of the insertion end 201 of the collecting pipe 2 can also be achieved.

[0047] It should be noted that the accommodating cavity 301 of the first container 3 can also be filled with liquid, and the insertion end 201 of the collecting pipe 2 forms a pressure seal at the bottom of the accommodating cavity 301. The pressure in the accommodating cavity 301 can be set according to requirements to ensure that the liquid in the collecting pipe 2 can stably enter the accommodating cavity 301. The working principle of the water seal of the collecting pipe 2 in the accommodating cavity 301 of the first container 3 can also refer to the working principle of a coal gas water seal or a water seal type coal gas drainer.

[0048] In some or certain embodiments, the collecting pipe 2 is controllable in switching, and the sour gas treatment system further comprises:

[0049] The flushing pipe 6 is controllable in switching and is communicated to the hole wall of the collecting pipe 2 at one end.

[0050] The collecting pipe 2 is controllable in switching. When the collecting pipe 2 needs to be flushed, the collecting pipe 2 is closed, the flushing pipe 6 is opened, the flushing liquid is introduced into the flushing pipe 6, the flushing liquid enters the collecting pipe 2 for flushing, and can fall into the accommodating cavity 301. The possibility that the liquid in the collecting pipe 2 is too much, the ammonium salt in the liquid is condensed, and the collecting pipe 2 is blocked can be reduced. The first container 3 does not need to be disassembled for maintenance for a long period of time, the long-term stable use of the collecting pipe 2 is ensured, and the sour gas treatment efficiency is ensured.

[0051] It should be noted that the switching of the collecting pipe 2 and the flushing pipe 6 in the application can be realized by setting a control valve 7 on the corresponding pipeline. The control valve 7 can be a mechanical valve or an electromagnetic valve, etc.

[0052] In some or certain embodiments, the sour gas treatment system can also comprise a liquid bottle (not shown in the figure) or a liquid tank, etc. communicated with the flushing pipe 6. The liquid bottle or the liquid tank can introduce the cleaning liquid into the flushing pipe 6.

[0053] In some or certain embodiments, the first container 3 is provided with a liquid discharge port 302 communicated with the accommodating cavity 301, and the sour gas treatment system further comprises:

[0054] The liquid collecting container 8 is provided with a liquid collecting cavity (not shown in the figure) communicated with the liquid discharge port 302.

[0055] The liquid collection container 8 can increase the volume of the accumulated liquid and the flushing liquid in the acid gas treatment system, and reduce the maintenance frequency of the acid gas treatment system.

[0056] In some or certain embodiments, the acid gas pipeline 1 is a bent pipeline, and the accumulated liquid discharge outlet 101 is adjacent to the bending part 102 of the acid gas pipeline 1.

[0057] The accumulated liquid discharge outlet 101 is adjacent to the bending part 102 of the acid gas pipeline 1, and the acid gas pipeline 1 can be lowered at the accumulated liquid discharge outlet 101 relative to the bending part 102 according to the requirements when in use. The accumulated liquid discharge outlet 101 can be at a low position, and the accumulated liquid has a tendency to move to the accumulated liquid discharge outlet 101 under the action of gravity, so as to facilitate the collection of the condensed accumulated liquid in the acid gas pipeline 1.

[0058] In some or certain embodiments, the preheater 4 is a heat exchanger provided with at least one heat exchange channel, and one heat exchange channel is configured as a heating channel.

[0059] The preheater 4 is a heat exchanger provided with at least one heat exchange channel, which facilitates the introduction of acid gas and the heating of the acid gas. The acid gas flowing from the acid gas pipeline 1 to the combustion furnace 5 will not be hindered.

[0060] In some or certain embodiments, the heat exchanger comprises:

[0061] The shell 401 is provided with a heat exchange cavity (not shown in the figure).

[0062] The first heat exchange pipe 402 is arranged in the heat exchange cavity and extends out of the shell 401 at both ends. The pipe hole of the first heat exchange pipe 402 is configured as a heat exchange channel.

[0063] The second heat exchange pipe 403 is arranged in the heat exchange cavity and extends out of the shell 401 at both ends. The second heat exchange pipe 403 is in contact with the first heat exchange pipe 402.

[0064] The heat exchanger adopts the above structure, which has low manufacturing cost and is also suitable for factory environment.

[0065] It should be noted that the contact between the first heat exchange pipe 402 and the second heat exchange pipe 403 is not shown in the figure. The contact mode of the first heat exchange pipe 402 and the second heat exchange pipe 403 can be referred to, for example, a tubular heat exchanger.

[0066] In some or certain embodiments, the acid gas treatment system further comprises:

[0067] The acid gas treatment system further comprises a medium container 9 provided with an output end and a recovery container 10 provided with a recovery end. The output end and the recovery end are respectively connected to both ends of the second heat exchange pipe 403.

[0068] The heat exchange medium can be delivered into the second heat exchange pipe 403, and the recovery container 10 can recover the heat exchange medium. The heat exchange medium can be high-temperature steam or liquid, etc. The medium container 9 and the recovery container 10 can be provided in a bottle shape, a box shape or other shapes according to requirements.

[0069] In some or certain embodiments, the preheater 4 can also be a shell-and-tube heat exchanger, and the inner hole of one of the heat exchange pipes can be configured as a heating channel.

[0070] In some or certain embodiments, the acid gas treatment system further comprises:

[0071] The on-off controllable transmission pipe 11 is connected to the other end of the heating channel and the combustion furnace 5 at two ends, so as to facilitate the delivery and interruption of the acid gas.

[0072] It should be noted that the communication between different pipes and between different pipes and structures in the present application can be realized by flanges or joints, etc.

[0073] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0074] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0075] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An acid gas treatment system characterized by, The acid gas pipeline is provided with a liquid discharge outlet between two ends of the acid gas pipeline. The liquid collection pipe is in communication with the liquid discharge outlet. The first container is provided with a containing cavity in communication with the other end of the liquid collection pipe. The preheater is provided with a heating channel, one end of which is in communication with one end of the acid gas pipeline, and the other end of which is in communication with the combustion furnace. The containing cavity is used to form a water seal, the other end of the liquid collection pipe is configured as an insertion end, and the insertion end is inserted into the containing cavity.

2. The acid gas treatment system of claim 1, wherein, The containing cavity is in a columnar shape, and two ends thereof are configured as a top end and a bottom end, respectively.

3. The acid gas treatment system of claim 2, wherein, The insertion end is inserted into the containing cavity, and the distance between the insertion end and the top end is greater than the distance between the insertion end and the bottom end.

4. Acid gas treatment system according to any one of claims 1-3, characterized in that The liquid collection pipe is controllable, and the acid gas treatment system further comprises: The flushing pipe is controllable, and one end thereof is in communication with the hole wall of the liquid collection pipe.

5. The acid gas treatment system according to any one of claims 1 to 3, wherein, The first container is provided with a liquid discharge port in communication with the containing cavity, and the acid gas treatment system further comprises: The liquid collection container is provided with a liquid collection cavity in communication with the liquid discharge port.

6. The acid gas treatment system of any one of claims 1 to 3, wherein, The acid gas pipeline is a bent pipe, and the liquid discharge outlet is adjacent to the bending part of the acid gas pipeline.

7. The acid gas treatment system of any one of claims 1 to 3, wherein, The preheater is a heat exchanger, and the heat exchanger is provided with at least one heat exchange channel.

8. The acid gas treatment system of claim 7, wherein, The heat exchanger comprises: The shell is provided with a heat exchange cavity. The first heat exchange pipe is arranged in the heat exchange cavity and extends out of the shell at both ends. The second heat exchange pipe is arranged in the heat exchange cavity and extends out of the shell at both ends.

9. The acid gas treatment system of claim 8, wherein, The second heat exchange pipe is in contact with the first heat exchange pipe.

10. The acid gas treatment system of any one of claims 1 to 3, wherein, The acid gas treatment system further comprises a medium container provided with an output end and a recovery container provided with a recovery end. The output end and the recovery end are in communication with both ends of the second heat exchange pipe, respectively. The acid gas treatment system further comprises: The transmission pipe is controllable, and both ends thereof are in communication with the other end of the heating channel and the combustion furnace, respectively.

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