Device for absorbing tail gas in sulfur melting process

Abstract

The utility model discloses a device for absorbing tail gas in a sulfur melting process, and relates to the technical field of tail gas absorption treatment. Compared with the prior art, the utility model solves the problem that the tail gas pipeline is easy to block in the tail gas absorption process of the sulfur melting tank, and the arranged condensation / melting device is matched with the silk screen filter, so that gaseous sulfur entrained in the tail gas can be condensed and then intercepted, and the gaseous sulfur flows back to the sulfur melting tank for recycling after being melted; and the gas containing hydrogen sulfide is used for removing arsenic in the contaminated acid, and meanwhile, the contaminated acid can wash other toxic and harmful gases, so that the purpose of treating waste with waste is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas absorption treatment technical field, more specifically relates to a device that carries out tail gas absorption in the process of melting sulfur. BACKGROUND

[0002] Melting sulfur refers to the solid sulfur in the chemical production process is melted into liquid sulfur, since the process is mostly carried out in a closed environment, toxic and harmful gases such as sulfur dioxide, hydrogen sulfide are produced in the process of melting sulfur, if not treated directly discharged, not only will bring huge negative impact to the environment we live in, also will affect the quality of life of nearby residents, it is difficult to guarantee the life and health of residents, based on this background and negative effect, chemical enterprises must put the tail gas emission problem in the prominent position in the production process.

[0003] The gaseous sulfur condenses and adheres to the tail gas pipe wall in the process of running and using the traditional melting sulfur tail gas absorption technology process, which can cause the tail gas absorption pipe 1 pipeline blockage, the pipeline is dredged, and a large amount of manpower and material resources are consumed, which affects the normal production of enterprises and is not conducive to the sustainable development of enterprises, and the adhered sulfur cannot be recycled and reused, which does not meet the development concept of energy saving and emission reduction of enterprises. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a device for carrying out tail gas absorption in the process of melting sulfur, which is used to solve the problems mentioned in the background technology. The condensing / melting device in the device is matched with a wire mesh filter, which can condense and trap the gaseous sulfur carried in the tail gas, and the gaseous sulfur is recycled by flowing back to the melting sulfur tank after melting, and the tail gas after removing the gaseous sulfur is used for waste acid treatment, so that waste is treated with waste.

[0005] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0006] A device for carrying out tail gas absorption in the process of melting sulfur, comprising: a melting sulfur tank, a tail gas absorption pipe, a gas-liquid separation chamber, a tail gas fan and an absorption tower.

[0007] The melting sulfur tank is connected with the gas-liquid separation chamber through the tail gas absorption pipe.

[0008] The gas-liquid separation chamber is connected with the tail gas fan and the absorption tower in sequence.

[0009] Preferably, the tail gas absorption pipe comprises a main path and two symmetrical branch paths, one end of the branch path is connected with the main path, and the other end is connected with the melting sulfur tank.

[0010] Preferably, a wire mesh filter is arranged in the branch path, which traps the solid sulfur powder after condensation in the process of running and using, so as to prevent the gaseous sulfur from condensing in the middle and rear pipelines and causing blockage of the tail gas pipeline.

[0011] Preferably, the branch is wrapped with a jacket shell, circulating cooling water is introduced into the jacket shell in the condensing section to condense gaseous sulfur in the tail gas and then the solid sulfur powder is intercepted by the wire mesh filter; conversely, high pressure steam is introduced into the jacket shell in the melting sulfur section to melt the solid sulfur intercepted in the wire mesh filter, and the melted sulfur flows into the melting sulfur tank for reuse.

[0012] Preferably, a tail suction stop valve is arranged between the branch and the main line to improve the reuse rate of sulfur in the tail gas after pipeline switching.

[0013] Preferably, a cooling water inlet pipe is arranged at the lower part of the jacket shell, and a high pressure steam inlet pipe is arranged beside the cooling water inlet pipe.

[0014] Preferably, a cooling water outlet pipe is arranged at the upper part of the jacket shell, and a steam condensate outlet pipe is arranged beside the cooling water outlet pipe.

[0015] Preferably, the cooling water inlet pipe, the cooling water outlet pipe, the high pressure steam inlet pipe and the steam condensate outlet pipe are all provided with stop valves to switch the circulating medium in the jacket shell.

[0016] Preferably, an exhaust cylinder is arranged at the top of the absorption tower, and a pressure gauge is arranged on the tail gas absorption pipe.

[0017] According to the above technical scheme, compared with the prior art, the present application has the following beneficial effects:

[0018] Compared with the prior art, the present application can set the melting sulfur section / condensing section, avoid the gaseous sulfur in the tail gas from condensing and adhering to the pipe wall to cause the tail gas pipeline to be blocked, and also can condense and recycle the gaseous sulfur in the tail gas, thereby greatly improving the long-term operation stability of the absorption device. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0020] Figure 1 is a structural diagram of the device of the present application;

[0021] In the drawings:

[0022] 1-tail gas absorption pipe, 111-main road, 112-branch, 2-gas-liquid separation chamber, 3-absorption tower, 4-tail gas fan, 5-exhaust cylinder, 6-tail suction stop valve, 7-jacket shell, 8-wire mesh filter, 9-molten sulfur tank, 10-steam condensate return pipe, 11-cooling water outlet pipe, 12-high pressure steam inlet pipe, 13-cooling water inlet pipe, 14-pressure gauge. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] The embodiment provides a device for tail gas absorption in a molten sulfur process, comprising: a molten sulfur tank 9, a tail gas absorption pipe 1, a gas-liquid separation chamber 2, a tail gas fan 4 and an absorption tower 3.

[0026] The molten sulfur tank 9 is connected with the gas-liquid separation chamber 2 through the tail gas absorption pipe 1.

[0027] The gas-liquid separation chamber 2 is connected with the tail gas fan 4 and the absorption tower 3 in sequence through pipelines.

[0028] In the embodiment, the tail gas absorption pipe 1 comprises a main road 111 and two symmetrical branch roads 112; one end of the branch road 112 is connected with the main road 111, and the other end is connected with the molten sulfur tank 9.

[0029] The branch road 112 is provided with a wire mesh filter 7, which can intercept the condensed solid sulfur powder during operation and use, so as to prevent the gaseous sulfur from causing blockage of the tail gas pipeline after condensation in the middle and rear pipelines.

[0030] The branch road 112 is wrapped with a jacket shell 7; in the condensation section, circulating cooling water is introduced into the jacket shell 7, which is used for condensing the gaseous sulfur in the tail gas and then intercepting the solid sulfur powder through the wire mesh filter 8; conversely, in the molten sulfur section, high pressure steam is introduced into the jacket shell 7, which melts the solid sulfur intercepted in the wire mesh filter 8, and the melted sulfur flows into the molten sulfur tank for reuse.

[0031] The branch road 112 section between the jacket shell 7 and the main road 111 is provided with a tail suction stop valve 6, which is used for molten sulfur sulfur recovery after pipeline switching, so as to improve the reuse rate of sulfur in the tail gas.

[0032] The lower part of the jacket shell 7 is provided with a cooling water inlet pipe 13, and a high-pressure steam inlet pipe 12 is arranged beside the cooling water inlet pipe 13.

[0033] The upper part of the jacket shell 7 is provided with a cooling water outlet pipe 11, and a steam condensate outlet pipe 10 is arranged beside the cooling water outlet pipe 11.

[0034] The cooling water inlet pipe 13, the cooling water outlet pipe 11, the high-pressure steam inlet pipe 12, and the steam condensate outlet pipe 10 are all provided with stop valves for switching the circulating medium inside the jacket shell 7.

[0035] An exhaust cylinder 5 is arranged at the top of the absorption tower 3.

[0036] A pressure gauge 14 is installed on the tail gas absorption pipe 1 to observe whether the wire mesh filter 8 is blocked.

[0037] Example 2

[0038] The present embodiment provides a method for tail gas absorption using the above-mentioned tail gas absorption device in the molten sulfur process, comprising:

[0039] (1) Two branches are denoted as tail gas absorption device one and tail gas absorption device two. Before work, check whether the wire mesh filter 8 of the tail gas absorption device one and the tail gas absorption device two is blocked. If the wire mesh filter 8 is normal, manually open the stop valve on the cooling water outlet pipe 11 of the tail gas absorption device one, and half-open the stop valve on the cooling water inlet pipe 13, so that the jacket shell 7 is filled with cooling water. At this time, the tail gas absorption device is in the condensation section.

[0040] (2) After the liquid in the gas-liquid separation chamber 2 is emptied, open the tail gas absorption stop valve 6 on the tail gas absorption pipe 1 and start the tail gas fan 4. At this time, the molten sulfur tail gas in the molten sulfur tank enters the gas-liquid separation chamber 2 through the tail gas absorption pipe 1 for gas-liquid separation, and the liquid is accumulated in the lower part of the gas-liquid separation chamber 2, and the tail gas enters the absorption tower 3 for waste acid treatment.

[0041] (3) During the operation of the device, observe the pressure gauge 14 on the tail gas absorption pipe 1. If the pressure is abnormal, switch to another set of tail gas absorption device two, and switch it from the molten sulfur section to the condensation section. After injecting cooling water into the jacket shell 7 of the tail gas absorption device two, open its tail gas absorption stop valve 6, and after observing that the pressure is normal, close the tail gas absorption stop valve 6 of the tail gas absorption device one, and then open the stop valves of the steam condensate outlet pipe 10 and the high-pressure steam inlet pipe 12, and switch it from the condensation section to the molten sulfur section. High-pressure steam is introduced into the jacket shell to melt the solid sulfur accumulated in the wire mesh filter 8, and then flows into the molten sulfur tank for recycling.

[0042] (4) After the sulfur blockage inside the wire mesh filter 8 has melted, remove the wire mesh filter 8, perform deep cleaning with an ultrasonic cleaner, and then install and use it.

[0043] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for performing tail gas absorption in a sulfur smelting process, characterized in that, The application relates to a sulfur melting tank, tail gas absorption pipe, gas-liquid separation chamber, tail gas fan and absorption tower. The sulfur melting tank is connected with the gas-liquid separation chamber through the tail gas absorption pipe. The gas-liquid separation chamber is sequentially connected with the tail gas fan and the absorption tower. The tail gas absorption pipe comprises a main path and two symmetrical branch paths; one end of the branch path is connected with the main path, and the other end is connected with the sulfur melting tank. A wire mesh filter is arranged in the branch path. The branch path is wrapped with a jacket shell layer. A tail gas absorption stop valve is arranged between the jacket shell layer and the main path. A cooling water inlet pipe is arranged at the lower part of the jacket shell layer, and a high-pressure steam inlet pipe is arranged beside the cooling water inlet pipe. A cooling water outlet pipe is arranged at the upper part of the jacket shell layer, and a steam condensate water outlet pipe is arranged beside the cooling water outlet pipe. The cooling water inlet pipe, the cooling water outlet pipe, the high-pressure steam inlet pipe and the steam condensate water outlet pipe are all provided with stop valves.

2. A device for performing tail gas absorption in a sulfur process according to claim 1, characterized in that An exhaust cylinder is arranged at the top of the absorption tower, and a pressure gauge is arranged on the tail gas absorption pipe.

3. A device for performing tail gas absorption in a sulphur process according to claim 2, characterised in that ​

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