Hydrogen sulfide synthesis skid-mounted system

Abstract

The utility model discloses a hydrogen sulfide synthesis skid-mounted system which comprises a liquid sulfur transfer module, a hydrogen sulfide synthesis module, a product gas pretreatment module, a product gas purification module, a tail gas treatment module and a public engineering module, the liquid sulfur transfer module, the hydrogen sulfide synthesis module, the product gas pretreatment module, the product gas purification module and the tail gas treatment module are sequentially communicated, and the product gas pretreatment module and the product gas purification module are both communicated with the liquid sulfur transfer module. According to the hydrogen sulfide synthesis skid-mounted system disclosed by the utility model, each functional component is modularized, the size of each module is configured in a coordinated manner and meets the transportation condition, corresponding process pipelines, instrument components, cables and the like can be prefabricated and mounted when leaving a factory, and debugging work can be carried out only by simple assembly and construction on a construction site; the workload of a construction site is greatly reduced, waste of installation materials is effectively reduced, and the device has the advantages of being small in occupied area, low in construction cost and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical equipment, relate to the production equipment of chemical raw material, especially a hydrogen sulfide synthesis pry dress system. BACKGROUND

[0002] In the biological medicine, fine chemical industry, semiconductor or environmental protection governance industry, hydrogen sulfide is a very important raw material, and the main hydrogen sulfide synthesis technology has direct synthesis hydrogen sulfide, such as methane and liquid sulfur (liquid sulfur) direct synthesis hydrogen sulfide, hydrogen and liquid sulfur direct synthesis hydrogen sulfide, sodium sulfide (hydrogen) salt and acid direct synthesis hydrogen sulfide; By-product hydrogen sulfide, such as coke preparation carbon disulfide by-product hydrogen sulfide, petrochemical industry by-product hydrogen sulfide, thiophene and other organic synthesis process by-product hydrogen sulfide. Except that the hydrogen sulfide products prepared from hydrogen and liquid sulfur, sodium sulfide (hydrogen) salt and acid have relatively high purity, the hydrogen sulfide produced by other processes has low purity and needs further purification, and the operation cost of hydrogen sulfide prepared from sodium sulfide (hydrogen) salt and acid is relatively high, the gas production pressure is unstable, the system has more dynamic equipment and leakage points, and safety hazards are prone to occur. After comprehensive comparison, hydrogen and liquid sulfur direct synthesis hydrogen sulfide has obvious advantages.

[0003] The current hydrogen and liquid sulfur direct synthesis hydrogen sulfide process often adopts a civil framework structure, and compared with the cost of the process system itself, the civil framework has high cost, large occupied area and long construction period, which is not conducive to the further promotion of the process system. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem of overcoming the prior art, and provides a hydrogen sulfide synthesis pry dress system with simple structure, low cost, short construction period, small occupied area and convenient transportation.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A hydrogen sulfide synthesis pry dress system, comprising a liquid sulfur transfer module, a hydrogen sulfide synthesis module, a product gas pretreatment module, a product gas purification module, a tail gas treatment module and a utility module, the liquid sulfur transfer module, the hydrogen sulfide synthesis module, the product gas pretreatment module, the product gas purification module and the tail gas treatment module are sequentially communicated, and the product gas pretreatment module and the product gas purification module are communicated with the liquid sulfur transfer module.

[0007] As a further improvement of the above technical scheme, the product gas purification module is communicated with a product gas buffer module.

[0008] As a further improvement of the above technical scheme, the hydrogen sulfide synthesis module and the tail gas treatment module are vertically arranged, and the liquid sulfur transfer module, the product gas buffer module, the product gas pretreatment module and the product gas purification module are sequentially arranged from bottom to top.

[0009] As a further improvement of the above technical solution: the hydrogen sulfide synthesis module and the tail gas treatment module each include multiple operation platforms, and the operation platforms of the hydrogen sulfide synthesis module and the operation platforms of the tail gas treatment module are connected through prefabricated platforms;

[0010] And / or, the product gas buffer module and the product gas pretreatment module are connected through a module connecting column;

[0011] And / or, the hydrogen sulfide synthesis skid-mounted system further includes at least one prefabricated staircase.

[0012] As a further improvement of the above technical solution: the liquid sulfur transfer module is in communication with the upper part of the hydrogen sulfide synthesis module, and the hydrogen gas pipeline is in communication with the lower part of the hydrogen sulfide synthesis module.

[0013] As a further improvement of the above technical solution: the hydrogen sulfide synthesis module includes a hydrogen sulfide synthesis tower lower tower and a hydrogen sulfide synthesis tower upper tower, the liquid sulfur transfer module is in communication with the hydrogen sulfide synthesis tower upper tower, and the hydrogen gas pipeline is in communication with the hydrogen sulfide synthesis tower lower tower.

[0014] As a further improvement of the above technical solution: the product gas pretreatment module includes a sulfur dust collecting device, the sulfur dust collecting device is internally provided with a wire mesh or filter screen, the sulfur dust collecting device is externally provided with a heating jacket, the utility module includes a heat conducting oil tank, the heat conducting oil tank is in communication with the heating jacket, and the sulfur dust collecting device is in communication with the liquid sulfur transfer module.

[0015] As a further improvement of the above technical solution: the product gas purification module includes at least two cooling and filtering units, each cooling and filtering unit includes a cooler and a filter downstream of the cooler, the filter is externally provided with a heating jacket, the utility module includes a heat conducting oil tank, the heat conducting oil tank is in communication with the heating jacket, and the filter is in communication with the liquid sulfur transfer module.

[0016] As a further improvement of the above technical solution: the liquid sulfur transfer module includes a liquid sulfur circulating transfer tank and a liquid sulfur feeding pump, the liquid sulfur circulating transfer tank is externally provided with a heat preservation jacket or a heating jacket, the liquid sulfur feeding pump is externally provided with a heat preservation jacket or a heating jacket, and the utility module includes a heat conducting oil tank, the heat conducting oil tank is in communication with the heating jacket.

[0017] As a further improvement of the above technical solution: the tail gas treatment module includes a tail gas pipeline, a first-stage absorption tower, a second-stage absorption tower and a tail gas fan which are sequentially in communication, the first-stage absorption tower is provided with at least two first-stage absorption circulating pumps, and the second-stage absorption tower is provided with at least two second-stage absorption circulating pumps.

[0018] Compared with the prior art, the hydrogen sulfide synthesis prying system has the advantages that

[0019] The hydrogen sulfide synthesis prying system disclosed by the utility model modularizes each functional component module, the size of each module is coordinately configured and meets the transportation condition, corresponding process pipelines, instrument components, cables and the like can be prefabricated and installed at the time of leaving the factory, only simple assembly and erection need to be carried out at the construction site to carry out debugging work, the workload of the construction site is greatly reduced, the waste of installation materials is effectively reduced, and the utility model has many advantages such as small land occupation and low engineering cost.

[0020] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of hydrogen sulfide synthesis prying system of the utility model.

[0022] Figure 2 It is the structure schematic diagram of liquid sulfur transfer module in the utility model.

[0023] Figure 3 It is the structure schematic diagram of hydrogen sulfide synthesis module in the utility model.

[0024] Figure 4 It is the structure schematic diagram of product gas pretreatment module in the utility model.

[0025] Figure 5 It is the structure schematic diagram of product gas purification module in the utility model.

[0026] Figure 6 It is the structure schematic diagram of product gas buffer module in the utility model.

[0027] Figure 7 It is the structure schematic diagram of tail gas treatment module in the utility model.

[0028] Figure 8 It is the structure schematic diagram of utility module in the utility model.

[0029] Each reference numeral in the drawing represents:

[0030] 1. Liquid sulfur transfer module; 1.1. Liquid sulfur circulating transfer tank; 1.2. Liquid sulfur feeding pump; 1.3. Liquid sulfur transfer module frame; 2. Hydrogen sulfide synthesis module; 2.1. Hydrogen sulfide synthesis lower tower; 2.2. Hydrogen sulfide synthesis upper tower; 2.3. Hydrogen sulfide synthesis module frame; 3. Product gas pretreatment module; 3.1. Sulfur dust collecting device; 3.2. Steam gas distribution cylinder; 3.3. Product gas pretreatment module frame; 4. Product gas purification module; 4.1. Cooler; 4.2. Filter; 4.3. Product gas purification module frame; 5. Product gas buffer module; 5.1. Hydrogen sulfide buffer tank; 5.2. Product gas buffer module frame; 6. Tail gas treatment module; 6.1. Tail gas pipeline; 6.2. First-stage absorption tower; 6.3. First-stage absorption circulating pump; 6.4. Second-stage absorption circulating pump; 6.5. Second-stage absorption tower; 6.6. Tail gas fan; 6.7. Tail gas treatment module frame; 7. Utility module; 7.1. Heat conducting oil tank; 7.2. Heat conducting oil pump; 7.3. Heat exchanger; 7.4. Nitrogen buffer tank; 7.5. Instrument air tank; 7.6. Utility module frame; 8.1. Prefabricated stair; 8.2. Prefabricated platform; 8.3. Module connecting column. DETAILED DESCRIPTION

[0031] In the description of the present application, it is to be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] In the present application, unless otherwise specifically defined and limited, the terms "assembly", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two elements. 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.

[0034] The utility model will be further explained in detail below in combination with the drawings and specific embodiments of the specification.

[0035] As Figures 1 to 8 shown, the embodiment is based on 5 tons / day hydrogen sulfide production hydrogen sulfide synthesis pry dress system, each module frame size refers to the size of the flatbed truck of 17.5 meters long, 3 meters wide and the height limit of 4 meters and designs.

[0036] The hydrogen sulfide synthesis pry dress system of the embodiment comprises a liquid sulfur transfer module 1, a hydrogen sulfide synthesis module 2, a product gas pretreatment module 3, a product gas purification module 4, a product gas buffer module 5, a tail gas treatment module 6 and a utility module 7.

[0037] Among them, the liquid sulfur transfer module 1 is mainly the place for supplying and circulating backflow of liquid sulfur, which is provided with a liquid sulfur circulating transfer tank 1.1 and a liquid sulfur feeding pump 1.2;

[0038] The hydrogen sulfide synthesis module 2 mainly comprises a hydrogen sulfide synthesis tower and related accessories. The lower tower 2.1 of the hydrogen sulfide synthesis tower is the main place for hydrogen sulfide synthesis reaction, and the upper tower 2.2 of the hydrogen sulfide synthesis tower is the main place for preliminary cooling / heat removal.

[0039] The product gas pretreatment module 3 is a place for preliminary separation and purification of hydrogen sulfide gas, which comprises a sulfur dust collecting device 3.1 and related accessories, and a steam gas cylinder 3.2 is also arranged in the module.

[0040] The product gas purification module 4 is a place for further cooling and deep separation and purification of hydrogen sulfide gas, which comprises a cooler 4.1, a filter 4.2 and the like.

[0041] The product gas buffer module 5 is a buffer tank 5.1 for purified hydrogen sulfide gas, and the buffered product gas can be directly supplied to downstream use.

[0042] The tail gas treatment module 6 comprises a tail gas primary absorption tower 6.2 and a secondary absorption tower 6.5, a primary absorption circulating pump 6.3, a secondary absorption circulating pump 6.4, a tail gas fan 6.6 and the like, which is mainly used for absorbing toxic and harmful gases in emergency or maintenance.

[0043] The utility module 7 can be flexibly configured according to actual conditions, mainly comprising a heat conducting oil tank 7.1, a heat conducting oil pump 7.2, a heat exchanger 7.3, a nitrogen buffer tank 7.4 and an instrument gas tank 7.5 and the like, which mainly supplies corresponding public auxiliary conditions for the whole system.

[0044] The hydrogen sulfide synthesis pry dress system of the embodiment modularizes each functional component, connects each module through a prefabricated platform 8.2 and / or a module connecting column 8.3, and then configures a prefabricated staircase 8.1 according to the operation condition.

[0045] In the production process, the material in the liquid sulfur circulation transfer tank 1.1 is transported to the upper tower 2.2 of the hydrogen sulfide synthesis tower by the liquid sulfur feeding pump 1.2, while the other raw material hydrogen is transported to the lower tower 2.1 of the hydrogen sulfide synthesis tower through the pipe network, and the reaction is carried out at a temperature of 450-480℃ to generate hydrogen sulfide gas with high purity; the generated hydrogen sulfide gas flows from bottom to top in the hydrogen sulfide synthesis tower, and exchanges heat with the liquid sulfur feeding in the upper tower 2.2 of the hydrogen sulfide synthesis tower, thereby increasing the temperature of the liquid sulfur and reducing the temperature of the hydrogen sulfide gas, and saving the energy consumption of the system.

[0046] The hydrogen sulfide crude gas after preliminary heat exchange enters the sulfur dust collecting device 3.1, which is provided with a wire mesh or filter screen, etc., and can intercept the sulfur dust carried out with the hydrogen sulfide gas. In actual operation, the pressure is monitored in real time, and when the pressure drop resistance reaches the set value, the heat source steam or heat conducting oil, etc. is introduced into the heating jacket (not shown in the figure) to heat the liquefied captured sulfur dust, and the liquid sulfur flows back to the liquid sulfur circulation transfer tank 1.1 for recycling; the hydrogen sulfide gas after preliminary impurity removal enters the product gas purification module 4.

[0047] In the product gas purification module 4, the hydrogen sulfide gas first passes through the cooler 4.1 to further cool the gaseous sulfur, so that it changes into liquid or solid phase, and then enters the filter 4.2 to further remove the sulfur dust; similarly, the filter 4.2 is also monitored in real time in actual operation, and when the pressure drop resistance reaches a certain value, it is switched to another set of cooling and filtering unit; the existing cooling and filtering unit blocked is introduced into the heating jacket with heat source steam or heat conducting oil, etc. to heat the liquefied captured sulfur dust, and the liquid sulfur flows back to the liquid sulfur circulation transfer tank 1.1 for recycling; the hydrogen sulfide gas after deep purification enters the hydrogen sulfide buffer tank 5.1, which can be directly supplied to the downstream for use.

[0048] For details Figure 2 Further, in the embodiment, the liquid sulfur circulation transfer tank 1.1 and the liquid sulfur feeding pump 1.2 are provided with heat preservation or heating jackets to ensure the fluidity of the liquid sulfur.

[0049] For details Figure 3 Further, in the embodiment, the hydrogen sulfide synthesis module 2 is a three-layer structure, and the key operation points or observation points are located near the operation platform.

[0050] For details Figure 4Further, in this embodiment, the lower plane of the product gas pretreatment module 3 is at the same level as the three-layer operation platform of the hydrogen sulfide synthesis module frame 2.3; the sulfur dust collecting device 3.1 is hung on the upper beam plane of the product gas pretreatment module frame 3.3 by means of an ear seat, and the total height of the device and the frame does not exceed the transportation size requirement; the sulfur collected by the sulfur dust collecting device 3.1 is periodically heated and liquefied, and then flows back to the liquid sulfur circulating transfer tank 1.1 for recycling.

[0051] Specifically refer to Figure 5 Further, in this embodiment, the cooler 4.1 is hung on the lower beam of the product gas purification module frame 4.3 by means of an ear seat, and the bottom of the device is below the plane of the frame, and the total height of the device and the frame does not exceed the transportation size requirement; the legs of the filter 4.2 are placed on the plane of the frame; the cooler 4.1 and the filter 4.2 are both provided with two sets and are used in parallel for switching to ensure the continuous operation of the system.

[0052] Specifically refer to Figure 6 Further, in this embodiment, the lower plane of the product gas buffer module frame 5.2 is at the same level as the two-layer operation platform of the hydrogen sulfide synthesis module frame 2.3, and is connected through the module connecting column 8.3.

[0053] Specifically refer to Figure 7 Further, in this embodiment, the tail gas treatment module 6 includes a primary absorption tower 6.2 and a secondary absorption tower 6.5 connected in series, the gas inlet of the primary absorption tower 6.2 is introduced into the tail gas to be treated through the tail gas pipeline 6.1, and the tail gas fan 6.6 is located at the gas outlet of the secondary absorption tower 6.5 to provide power to generate negative pressure; the primary absorption tower 6.2 is equipped with two primary absorption circulating pumps 6.3, and the secondary absorption tower 6.2 is equipped with two secondary absorption circulating pumps 6.3, one for use and one for standby, to supply circulating absorption liquid for countercurrent absorption.

[0054] Specifically refer to Figure 8 Further, in this embodiment, the utility module 7 can be flexibly configured with devices or components according to actual conditions, the length of the utility module frame 7.6 can be appropriately lengthened, and it can also not be integrated with the above-mentioned other six modules.

[0055] Further, in the embodiment, the hydrogen sulfide synthesis module 2.3 and the tail gas treatment module frame 6.7 adopt a vertical frame, and the second and third operation platforms are connected through a prefabricated platform 8.2, and the tail gas fan 6.6 is arranged on the third operation platform; the liquid sulfur transfer module frame 1.3, the product gas buffer module frame 5.2, the product gas pretreatment module frame 3.3 and the product gas purification module frame 4.3 adopt a horizontal frame, the width and length are kept consistent, and are connected through module connecting columns 8.3 from bottom to top, and the height of the module connecting columns 8.3 needs to meet the regulation that the operation platforms are at the same elevation. Preferably, the material of each module frame and the module connecting column 8.3 is steel, which has high strength and good reliability.

[0056] Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application, or modify it into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application should fall within the scope of protection of the technical scheme of the present application.

Claims

1. A skid-mounted system for hydrogen sulfide synthesis, characterized in that: It includes a liquid sulfur transfer module (1), a hydrogen sulfide synthesis module (2), a product gas pretreatment module (3), a product gas purification module (4), a tail gas treatment module (6), and a utility module (7). The liquid sulfur transfer module (1), hydrogen sulfide synthesis module (2), product gas pretreatment module (3), product gas purification module (4), and tail gas treatment module (6) are connected in sequence. The product gas pretreatment module (3) and product gas purification module (4) are both connected to the liquid sulfur transfer module (1).

2. The hydrogen sulfide synthesis skid-mounted system according to claim 1, characterized in that: The product gas purification module (4) is connected to the product gas buffer module (5).

3. The hydrogen sulfide synthesis skid-mounted system according to claim 2, characterized in that: The hydrogen sulfide synthesis module (2) and the tail gas treatment module (6) are both arranged vertically, and the liquid sulfur transfer module (1), the product gas buffer module (5), the product gas pretreatment module (3) and the product gas purification module (4) are arranged sequentially from bottom to top.

4. The hydrogen sulfide synthesis skid-mounted system according to claim 3, characterized in that: Both the hydrogen sulfide synthesis module (2) and the tail gas treatment module (6) include multi-layer operating platforms, and the operating platforms of the hydrogen sulfide synthesis module (2) and the tail gas treatment module (6) are connected by a prefabricated platform (8.2). And / or, the product gas buffer module (5) and the product gas pretreatment module (3) are connected by a module connection column (8.3); And / or, the hydrogen sulfide synthesis skid system also includes at least one prefabricated staircase (8.1).

5. The hydrogen sulfide synthesis skid-mounted system according to any one of claims 1 to 4, characterized in that: The liquid sulfur transfer module (1) is connected to the upper part of the hydrogen sulfide synthesis module (2), and the hydrogen pipeline is connected to the lower part of the hydrogen sulfide synthesis module (2).

6. The hydrogen sulfide synthesis skid-mounted system according to claim 5, characterized in that: The hydrogen sulfide synthesis module (2) includes a lower tower (2.1) and an upper tower (2.2) of the hydrogen sulfide synthesis tower. The liquid sulfur transfer module (1) is connected to the upper tower (2.2) of the hydrogen sulfide synthesis tower, and the hydrogen pipeline is connected to the lower tower (2.1) of the hydrogen sulfide synthesis tower.

7. The hydrogen sulfide synthesis skid-mounted system according to any one of claims 1 to 4, characterized in that: The product gas pretreatment module (3) includes a sulfur dust collection device (3.1), which has a wire mesh or filter screen inside and a heating jacket outside. The utility module (7) includes a heat transfer oil tank (7.1), which is connected to the heating jacket. The sulfur dust collection device (3.1) is connected to the liquid sulfur transfer module (1).

8. The hydrogen sulfide synthesis skid-mounted system according to any one of claims 1 to 4, characterized in that: The product gas purification module (4) includes at least two cooling and filtration units. Each cooling and filtration unit includes a cooler (4.1) and a filter (4.2) located downstream of the cooler (4.1). The filter (4.2) is provided with a heating jacket. The utility module (7) includes a heat-conducting oil tank (7.1), which is connected to the heating jacket. The filter (4.2) is connected to the liquid sulfur transfer module (1).

9. The hydrogen sulfide synthesis skid-mounted system according to any one of claims 1 to 4, characterized in that: The liquid sulfur transfer module (1) includes a liquid sulfur circulation transfer tank (1.1) and a liquid sulfur feed pump (1.2). The liquid sulfur circulation transfer tank (1.1) is provided with an insulation jacket or a heating jacket. The liquid sulfur feed pump (1.2) is provided with an insulation jacket or a heating jacket. The utility module (7) includes a heat transfer oil tank (7.1). The heat transfer oil tank (7.1) is connected to the heating jacket.

10. The hydrogen sulfide synthesis skid-mounted system according to any one of claims 1 to 4, characterized in that: The exhaust gas treatment module (6) includes an exhaust gas pipeline (6.1), a primary absorption tower (6.2), a secondary absorption tower (6.5), and an exhaust gas fan (6.6) connected in sequence. The primary absorption tower (6.2) is equipped with at least two primary absorption circulation pumps (6.3), and the secondary absorption tower (6.5) is equipped with at least two secondary absorption circulation pumps (6.4).

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