A liquid sulfur degassing device and skid-mounted integrated equipment composed thereof
By using baffle plates and power air distributors in liquid sulfur degassing devices, combined with internal fog trap structures and steam heating systems, the problems of low efficiency and unreasonable equipment design of existing devices are solved. It achieves efficient degassing and space saving effects.
Patent Information
- Application Number
- CN202010280581.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-10
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2040-04-10
AI Technical Summary
The existing liquid sulfur degassing device is inefficient when removing H2S and H2SX dissolved in liquid sulfur, and cannot achieve sufficient removal. The equipment design lacks liquid level and temperature control, covers a large area, and the equipment structure does not have skid block integration. change.
A liquid sulfur degassing device was designed, using a baffle plate to divide it into a reaction chamber and a separation re-reaction chamber, combining a power air distributor and a screen hole separation inner part to realize gas-liquid mixing and separation, equipped with an internal fog trap structure and Steam heating pipe system and liquid level and temperature transmitters are installed on the device to form an integrated skid mounting equipment, including jacket structure, liquid sulfur sealing block and operating platform.
The liquid sulfur degassing efficiency is improved, and the hydrogen sulfide content is reduced from 300~500wppm to ≤10wppm, saving space, realizing the modular and integrated design of the equipment, making it convenient for operation and maintenance.
Smart Images
Figure CN111420430B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the removal of H2S and H2S dissolved in liquid sulfur produced by Claus process in the chemical industry. X A liquid sulfur degassing device and a skid-mounted integrated equipment composed thereof. Background Art
[0002] In recent years, the national economy has been developing rapidly, petrochemical enterprises have sprung up everywhere, and the demand for liquid sulfur has greatly increased. At the same time, in order to protect the environment, the country and the world have very high requirements for environmental protection, and ordinary people have a strong awareness of environmental protection. If H2S in liquid sulfur is not removed, it will pollute the environment and endanger the health of operators, and there will be hidden dangers of fire and explosion, and it will also affect the quality of solid sulfur products. Therefore, H2S in liquid sulfur must be removed.
[0003] In addition, the liquid sulfur produced by the Claus process sulfur recovery unit in the petrochemical industry contains dissolved H2S and H2S X , with a total content of about 300~500wppm. The industrial sulfur liquid product standard (GB / T2449.2-2015) requires the hydrogen sulfide content to be ≤15wppm. H2S is a toxic and flammable gas with great harm. If it is not removed, the H2S released during the transportation, storage or liquid sulfur molding process will corrode the equipment; if it is not removed, the material requirements for the equipment during transportation, storage or liquid sulfur molding will be increased, greatly increasing the material procurement cost and manufacturing cost.
[0004] In summary, liquid sulfur degassing skid-mounted integrated equipment and key internals have broad application prospects and markets in the petrochemical industry.
[0005] In existing liquid sulfur degassing devices, liquid sulfur enters from the bottom of the device. After the gas and liquid are mixed, they stay in the device for a short time, which makes it impossible to fully realize the removal reaction and gas lift separation. The effect is not good. If the removal standard requirements are not met, it is necessary to remove again. In addition, the equipment body has no liquid level control and temperature control, which makes it possible for liquid sulfur to flood the top fog collection system and paralyze the fog collection system. At the same time, there is no temperature control, and the internal temperature of the equipment cannot be effectively detected, and the steam flow cannot be effectively controlled. Most of the existing liquid sulfur degassing devices are single devices or a combination of multiple devices. The skid integration has not been realized, resulting in a large footprint. Summary of the invention
[0006] The present invention provides a liquid sulfur degassing device and a skid-mounted integrated device composed thereof, which improves degassing efficiency and reduces floor space. At the same time, through the skid-mounted integrated device, a modular overall skid-mounted device is formed that integrates equipment degassing, liquid level measurement, temperature control, liquid sulfur outlet plugging and pressure maintenance, equipment and each pipe port steam heating pipe network layout and collection, and an operation auxiliary platform.
[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:
[0008] A liquid sulfur degassing device comprises a liquid sulfur degassing body, which is divided into two parts, a reaction chamber and a separation re-reaction chamber, by a baffle; a liquid sulfur inlet is arranged on the body wall on the reaction chamber side; a power air distributor is installed on the separation re-reaction chamber side at the bottom of the body, a plurality of sieve hole separation internals are installed in the separation re-reaction chamber above the power air distributor port, a liquid sulfur outlet is arranged on the body wall above the sieve hole separation internals, and a gas outlet and a steam heating pipeline system are arranged on the top of the body.
[0009] The gas outlet adopts an inwardly extending mist-catching structure and is provided with a heating coil.
[0010] The outlet of the power air distributor is designed as a mesh opening.
[0011] The body is a jacket structure.
[0012] The steam heating pipeline system is connected to the main pipe at the top of the body, and heats the body, the pipelines at the liquid sulfur inlet and outlet, and the heating coils through various steam inlets. The condensate is collected into the bottom discharge pipeline through the steam trap and discharged uniformly.
[0013] A skid-mounted integrated equipment composed of a liquid sulfur degassing device, wherein the liquid sulfur degassing device is installed on a bottom skid, a jacketed gas-liquid mixer is installed at the liquid sulfur inlet, a liquid sulfur plugging block is installed at the liquid sulfur outlet, an insertable liquid level transmitter and a temperature transmitter are arranged on the body, and several layers of operating platforms are installed on the body, and ladders are provided between each layer of operating platforms.
[0014] The integrated skid-mounted equipment of the present invention is designed with a jacketed gas-liquid mixer at the inlet of the liquid sulfur pipeline. Inside the liquid sulfur degassing equipment, the baffle divides the inside of the equipment into a reaction chamber and a separation and re-reaction chamber. After the liquid sulfur and air mixture enters the equipment, the baffle makes the liquid sulfur and air mixture slowly flow down from the upper part of the equipment. This chamber is the reaction chamber, during which the H2S and H2S dissolved in the liquid sulfur are separated. X It reacts chemically with O2 in the air to generate elemental sulfur. As liquid sulfur slowly rises from the bottom of the equipment, this chamber is the separation and re-reaction chamber. It is then fully mixed with the air entering from the power air system and separated by the sieve-type internal parts in the equipment, so that H2S and H2S that have not yet reacted are X The power air is discharged after secondary separation through the top mist collection system, while the liquid sulfur enters the next process through the U-shaped liquid sulfur plugging module, thereby achieving the control of H2S and H2S in the liquid sulfur. X After degassing, the hydrogen sulfide content in the liquid sulfur product is removed from 300~500wppm to ≤10wppm.
[0015] The present invention integrates equipment, piping, instruments, a bottom skid and an operating platform into a whole, which saves space and facilitates operation. At the same time, modular supply is adopted to facilitate users. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the liquid sulfur degassing equipment of the present invention;
[0017] Figure 2 The skid-mounted integrated equipment composed of the liquid sulfur degassing device of the present invention;
[0018] Figure 3 for Figure 2 Left view of . DETAILED DESCRIPTION
[0019] The present invention is further described below in conjunction with the accompanying drawings.
[0020] Reference Figure 1 A liquid sulfur degassing device comprises a liquid sulfur degassing body, the body B is divided into two parts, namely a reaction chamber and a separation re-reaction chamber, by a baffle; a liquid sulfur inlet 1 is arranged on the body wall on the reaction chamber side; a power air distributor 3 is installed on the separation re-reaction chamber side at the bottom of the body, a plurality of sieve hole separation internals 4 are installed in the separation re-reaction chamber above the power air distributor port 3 (the sieve hole separation internals are standard parts, so that the liquid sulfur flows out from the dense holes to achieve the purpose of gas-liquid separation, and the gas and liquid are separated more effectively through the multi-stage sieve hole separation internals), a liquid sulfur outlet 6 is arranged on the body wall above the sieve hole separation internals 4, and a gas outlet and a steam heating pipeline system G are arranged on the top of the body.
[0021] The gas outlet adopts an inward-extending mist-catching structure and is equipped with a heating coil to separate the liquid droplets entrained in the gas for a second time. The inward-extending mist-catching structure is welded to a blind flange by a section of a cylinder, a wire mesh is installed in the cylinder, and is clamped by upper and lower supports and is detachable. A heating pipe is wrapped around the outer periphery of the cylinder to prevent the wire mesh from being blocked by liquid sulfur condensation.
[0022] The outlet of the power air distributor 3 is designed as a mesh opening. Air rushes out from all sides and fully contacts the liquid sulfur, so that the H2S and H2S dissolved in the liquid sulfur are separated. X Reacts with O2 again, taking away H2S and H2S that did not react in time X .
[0023] The body B is a jacket structure. Heating steam enters from the steam inlet 7 of each heating section and flows out from the steam outlet 8 of each heating section, thereby heating the equipment and the pipes.
[0024] The steam heating pipeline system is connected from the main pipe at the top of the body, and heats the body, the pipelines at the liquid sulfur inlet 1 and the liquid sulfur outlet 6, and the heating coils through the steam inlets 7. The condensate is collected into the bottom discharge pipeline through the steam trap and discharged uniformly.
[0025] The working principle of the liquid sulfur degassing device is as follows: the liquid sulfur enters the device from the liquid sulfur inlet 1 in the upper part of the device. Due to the flow diversion of the baffle, the flow path of the liquid sulfur is lengthened, and the separation efficiency is improved. The liquid sulfur and air mixture slowly flows down from the upper part of the device through the baffle 2, and then slowly flows up from the bottom. The baffle also divides the device into two chambers. The process of liquid sulfur flowing from top to bottom is the reaction chamber, so that the H2S and H2S dissolved in the liquid sulfur are separated. X It reacts with O2 in the air to generate elemental sulfur. The process from bottom to top is the separation and re-reaction chamber, and is fully mixed with the air entering from the power air inlet 3. It is separated by the mesh internal parts 4 in the equipment, and the H2S and H2S that have not reacted in time are X The liquid sulfur is discharged with the power air, and the droplets entrained in the gas are removed by the mist capture system 5 at the gas outlet and enter the next treatment process. The liquid sulfur flows into the U-shaped liquid sulfur plugging block through the liquid sulfur outlet 6 and enters the next process.
[0026] 1. A skid-mounted integrated device composed of a liquid sulfur degassing device, the liquid sulfur degassing device is installed on a bottom skid H, and a jacketed gas-liquid mixer A is installed at the liquid sulfur inlet 1; the O2 in the air is fully contacted with the H2S and H2SX in the liquid sulfur, so as to more effectively achieve the reaction to generate elemental sulfur. A liquid sulfur plugging block D is installed at the liquid sulfur outlet 6; an insert-type liquid level transmitter E and a temperature transmitter F are provided on the body B; and several layers of operating platforms I are installed on the body B, and each layer of the operating platform I is equipped with a ladder J for easy access to the platform.
[0027] The high and low liquid levels are controlled by the liquid level transmitter, thereby controlling the flow of liquid sulfur; the temperature of liquid sulfur is controlled by the temperature transmitter, thereby controlling the steam flow of the steam heating system.
[0028] The liquid sulfur plugging block D is a U-shaped structure. On the one hand, it allows the liquid sulfur to flow out smoothly, and at the same time prevents the loss of operating pressure in the equipment. The height of the U-shaped liquid sulfur plugging block is determined according to the operating pressure.
[0029] Working principle of a skid-mounted integrated equipment consisting of a liquid sulfur degassing device:
[0030] Liquid sulfur and air are mixed through the jacketed gas-liquid mixer A and enter the liquid sulfur degassing equipment B. After reaction and separation by the internal components of the liquid sulfur degassing equipment B, they are fully mixed with the air entering from the air power system C. The liquid sulfur enters the next process through the U-shaped liquid sulfur plugging block D, while the air and the entrained H2S and H2S X The gas is discharged through the top of the liquid sulfur degassing equipment B.
[0031] The liquid level transmitter E controls the high and low liquid levels to control the flow of liquid sulfur; the temperature transmitter F controls the temperature of liquid sulfur to control the steam flow of the steam heating system.
[0032] The steam heating manifold and discharge system G are connected to the main pipe from the top of the liquid sulfur degassing equipment B, and then the equipment jacket and each pipe opening are heated through various branches. The condensed liquid is collected from various branches through the steam trap and connected to the main pipe at the bottom of the equipment for unified discharge.
[0033] The bottom skid H, the operating platform I and the ladder J are provided to make the equipment self-contained and convenient for operation.
Claims
1. A liquid sulfur degassing device, comprising a liquid sulfur degassing body, characterized in that: The body (B) is divided into two parts, a reaction chamber and a separation re-reaction chamber, by a baffle; a liquid sulfur inlet (1) is provided on the wall of the body on the reaction chamber side; a power air distributor (3) is installed on the separation re-reaction chamber side of the bottom of the body; a plurality of sieve hole separation internals (4) are installed in the separation re-reaction chamber above the mouth of the power air distributor (3); a liquid sulfur outlet (6) is provided on the wall of the body above the sieve hole separation internals (4); and a gas outlet and a steam heating pipeline system (G) are provided on the top of the body.
2. A liquid sulfur degassing device according to claim 1, characterized in that: The gas outlet adopts an inwardly extending mist-catching structure and is provided with a heating coil.
3. A liquid sulfur degassing device according to claim 1, characterized in that: The outlet of the power air distributor (3) is designed as a mesh opening.
4. A liquid sulfur degassing device according to claim 1, characterized in that: The body (B) is a jacket structure.
5. A liquid sulfur degassing device according to claim 1, characterized in that: The steam heating pipeline system is connected to the main pipe at the top of the main body, and heats the main body, the pipelines at the liquid sulfur inlet (1) and the liquid sulfur outlet (6), and the heating coil through various steam inlets (7). The condensate is collected into the bottom discharge pipeline through the steam trap and discharged uniformly.
6. The skid-mounted integrated equipment composed of a liquid sulfur degassing device according to claim 1, characterized in that: The liquid sulfur degassing device is installed on a bottom skid (H), a jacketed gas-liquid mixer (A) is installed at the liquid sulfur inlet (1), a liquid sulfur plugging assembly (D) is installed at the liquid sulfur outlet (6), an insertable liquid level transmitter (E) and a temperature transmitter (F) are provided on the body (B), and a plurality of operating platforms (I) are installed on the body (B), and a ladder (J) is provided between each operating platform (I).
7. The skid-mounted integrated equipment composed of a liquid sulfur degassing device according to claim 6, characterized in that: The liquid sulfur plugging assembly (D) is a U-shaped structure.