Gas distributor and reaction kettle using same
By using a tubular gas distributor in a chemical reactor, the problems of high energy consumption and high leakage risk in traditional stirring processes are solved, achieving uniform gas distribution and material mixing, thus improving reaction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU SHENGDA NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-02-14
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional stirring processes in chemical reactors suffer from high energy consumption, complex equipment, numerous leakage points, and high safety risks, especially when hydrogen chloride gas is pressurized and introduced, where mechanical stirring leads to high energy consumption and significant leakage risks.
It adopts a tubular gas distributor with multiple rows of horizontal exhaust holes arranged in an alternating radial pattern. The double-layer tubular design connects the gas distributor to the inlet pipe. The gas distributor and the driving force of the feed return liquid replace mechanical stirring to achieve uniform gas distribution and material mixing.
It improves gas-liquid contact, reduces energy consumption and equipment complexity, minimizes leakage points, and enhances the reaction efficiency and safety of the reactor.
Smart Images
Figure CN224113910U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, and in particular to a gas distributor and a reaction vessel using the gas distributor. Background Technology
[0002] In the chemical industry, the reaction of gas and liquid often involves simply introducing gas into the reaction vessel and then setting up a stirrer for stirring. However, traditional stirring processes have problems such as high energy consumption and complex equipment in terms of mixing, mass transfer and heat transfer.
[0003] For example, the epichlorohydrin unit using the glycerol process uses hydrogen chloride gas as a raw material. Hydrogen chloride is introduced into the chlorination reactor, and under certain temperature, pressure and catalyst conditions, glycerol reacts with the raw material refined glycerol to undergo a chloride ion substitution reaction to produce monochloropropanediol, which is further substituted to produce dichloropropanol. This reaction is an exothermic reaction that takes place in a continuous reactor with gas and liquid phases. In order to increase the gas-liquid contact area and improve the heat transfer effect, an insertion tube is usually installed on the reactor to allow the gas to enter, and a stirrer is installed in the reactor to achieve good mixing and heat transfer effects.
[0004] However, because hydrogen chloride gas is introduced under pressure into a seven-stage continuous chlorination reactor, the presence of mechanical agitation in the reactor increases the number of potential leak points, making leaks at the mechanical seals more likely, and the energy consumption of the agitator motor is also relatively high. Therefore, it presents disadvantages: high investment, high energy consumption, numerous leak points, increased maintenance and repair workload, and increased operational safety and environmental risks from leaks. Utility Model Content
[0005] The purpose of this invention is to provide a gas distributor with a driving force and a reaction vessel using the distributor, which replaces the traditional stirring process and insertion tube technology, and has good gas distribution and mixing effect while being safer and more energy-efficient.
[0006] To achieve the above objectives, the present invention provides a gas distributor, which is a tubular gas distributor comprising several distribution tubes; each distribution tube is provided with several rows of horizontally arranged air holes, with 20-80 air holes in each row, and the air holes are located on the same side of the distribution tube; the centerline of the several rows of horizontally arranged air holes is parallel to the horizontal plane.
[0007] Furthermore, the gas distributor is a double-layer tubular gas distributor, which includes: each tubular gas distributor includes 5 distribution tubes, and the included angle between adjacent tubes in the 5 distribution tubes is the same.
[0008] Furthermore, the two tubular gas distributors are arranged with a height difference in the horizontal direction; they are symmetrically arranged in the vertical direction, and the angles between adjacent tubes are the same.
[0009] Furthermore, each distribution pipe is provided with 3 rows of horizontal air holes, with 50 air holes in each row; the air holes in the middle row are parallel to the horizontal plane, and the air holes in the upper and lower rows form an angle of 45° with the air holes in the middle row.
[0010] This utility model also provides a reaction vessel including a modified gas distributor. The reaction vessel further includes an inlet pipe disposed at the top of the reaction vessel and extending downward into the interior of the reaction vessel, and a discharge pipe disposed at the bottom of the reaction vessel and extending upward into the interior of the reaction vessel.
[0011] Furthermore, the reactor structure is provided from top to bottom with an inlet pipe, a PTFE support, a PTFE connector, and an outlet pipe; the gas distributor is fixed on the PTFE support and is connected to the inlet pipe.
[0012] Furthermore, a PTFE connecting block is provided between the PTFE support and the intake pipe. The PTFE connecting block is fixed to the intake pipe by PTFE bolts, and the gas distributor is fixed to the PTFE support by PTFE bolts.
[0013] Furthermore, the intake pipe is a steel pipe, and both the inner and outer surfaces of the steel pipe are lined with a PTFE layer.
[0014] Furthermore, the discharge pipe is a PTFE pipe, and the discharge pipe is provided with a plurality of discharge holes.
[0015] Furthermore, the discharge pipe has a total of 7 rows of discharge holes from top to bottom, with the upper and lower rows having the same spacing, and the discharge holes in adjacent rows being staggered; the number of discharge holes in each row is 5.
[0016] In summary, the device structure of this utility model is rationally designed. Utilizing the technical solution of this utility model yields the following beneficial effects: Each distribution tube in the gas distributor is arranged in a staggered radial pattern, with each distribution tube connected to the inlet pipe, and the outer top of the distribution tube is sealed. Secondly, the gas phase nozzles of the distribution tubes are laterally adjusted and installed in the same direction to obtain a driving force along the tangential direction of the inner circle of the reactor. Through the above technical means, combined with the driving force of the introduced hydrogen chloride gas and the feed return liquid, both good gas distribution and the need for heat transfer during material mixing and stirring are achieved. This utility model's gas distributor technology significantly improves process reaction efficiency, reduces energy consumption and equipment complexity by optimizing material distribution and mixing effects, and has broad application prospects. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the gas distribution tube of this utility model;
[0018] Figure 2This is a schematic diagram of the structure of the reaction vessel of this utility model;
[0019] Figure 3 yes Figure 2 The enlarged view shows a schematic diagram of the combined structure of the gas distribution pipe and the PTFE support.
[0020] Figure 4 yes Figure 2 Enlarged view of reference numeral A;
[0021] Figure 5 This is a schematic cross-sectional view of the discharge pipe in a gas distributor according to this utility model.
[0022] Figure 6 This is a schematic diagram of the single-tube structure of the gas distribution tube of this utility model;
[0023] Figure 7 This is a schematic cross-sectional view of a single tube of the gas distribution pipe of this utility model;
[0024] Explanation of reference numerals in the attached drawings: 1-Discharge pipe, 101-Discharge hole; 2-PTFE connector; 3-Gas distribution pipe, 301-Gas hole; 4-Inlet pipe; 5-PTFE support; 6-Reaction vessel; 7-PTFE connecting block; 8-PTFE bolt. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.
[0026] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer's left front side is designated as "front," the observer's right rear side as "rear," the observer's left rear side as "left," the observer's right front side as "right," the observer's top as "up," and the observer's bottom as "down." It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" in this text indicate orientations or positional relationships based on the accompanying drawings. These are merely for the purpose of clearly describing the present invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.
[0027] The background technology mentions that the epichlorohydrin unit using the glycerol process incorporates a stirrer in the reactor to achieve good mixing and heat transfer. In the process package of the epichlorohydrin unit, the continuous chlorohydrin reactor has a purge pressure of 0.2 MPa, which provides a driving force to the reaction liquid inside the reactor during purge. The reaction liquid is continuously transferred and refluxed by a bottom pump, also providing a certain driving force. By concentrating all driving forces in the same direction, the reaction liquid can obtain good driving force, thus replacing energy-consuming mechanical stirring and positively impacting the transfer of heat from the reaction liquid inside the reactor. Since the reaction in the continuous reactor involves a gas-liquid two-phase reaction, the reactor's reaction efficiency also depends on the gas distributor. Therefore, increasing the number of nozzles in the hydrogen chloride vent pipe is crucial for uniform gas distribution, achieving good gas-liquid contact, and improving the reactor's reaction efficiency. Therefore, this device was designed, using the gas distributor of this invention for the hydrogen chloride gas-liquid reaction, which naturally creates good gas distribution and stirring effects, replacing mechanical stirring.
[0028] See Figure 1 This utility model provides a gas distributor, which is a tubular gas distributor. The gas distributor includes several distribution tubes. Each distribution tube is provided with several rows of horizontally arranged air holes 301. The number of air holes 301 in each row is 20-80. The air holes 301 are arranged on the same side of the distribution tube. The center line of the several rows of horizontally arranged air holes 301 is parallel to the horizontal plane.
[0029] First, to address the requirement of uniform gas distribution in reactor 6, a gas distributor is installed at the lower end of the hydrogen chloride gas inlet pipe 4. Each distribution pipe within the gas distributor is arranged in a staggered radial pattern, connected to the inlet pipe 4, and its outer top is sealed. Second, the gas phase nozzles of the distribution pipes are laterally adjusted to align in the same direction, generating a driving force along the tangential direction of the reactor's inner circle. By combining these technical means with the driving forces of the introduced hydrogen chloride gas and the feed return liquid, a good gas distribution is achieved, while simultaneously meeting the heat transfer requirements for material mixing and stirring.
[0030] Specifically, the gas distributor is a double-layer tubular gas distributor, which includes: each tubular gas distributor includes 5 distribution tubes, and the included angle between adjacent tubes in the 5 distribution tubes is the same.
[0031] The use of a double-layer, five-spoke radially radiating distribution pipe can improve the uniformity of ventilation distribution; by changing the installation direction of the gas phase ventilation pipe, the tangential driving force of the gas is superimposed, thereby realizing the rotation of the liquid in the reactor, improving the gas-liquid contact effect and flow efficiency, and meeting the need to remove the heat released by the reaction in a timely manner.
[0032] The preferred direction of rotation is counterclockwise, because the natural flow direction in the Northern Hemisphere is counterclockwise. Rotation in the counterclockwise direction can better improve the gas-liquid contact effect and flow efficiency, and meet the need to remove the heat released by the reaction in a timely manner.
[0033] Specifically, see Figure 1 , Figure 2 , Figure 3 The two tubular gas distributors are set with a height difference in the horizontal angle; they are symmetrically set in the vertical angle, and the angle between adjacent tubes is the same.
[0034] Specifically, see Figure 3 , Figure 6 , Figure 7 Each distribution pipe is provided with three rows of horizontal air holes 301, with 50 air holes 301 in each row; the air holes 301 in the middle row are parallel to the horizontal plane, and the air holes 301 in the upper and lower rows form an angle of 45° with the air holes 301 in the middle row.
[0035] The three rows of holes are arranged at a 45° angle, with 50 vents 301 in each row. The uniform spacing and diameter of these vents 301 ensure good hydrogen chloride gas distribution.
[0036] See Figure 2 The present invention also provides a reaction vessel 6 including a modified gas distributor. The reaction vessel 6 further includes an inlet pipe 4 disposed at the top of the reaction vessel 6 and extending downward into the interior of the reaction vessel 6, and a discharge pipe 1 disposed at the bottom of the reaction vessel 6 and extending upward into the interior of the reaction vessel 6.
[0037] In a preferred embodiment of this utility model, the reactor 6 is configured from top to bottom as follows: an inlet pipe 4, a PTFE support 5, a PTFE connector 2, and a discharge pipe 1; the gas distributor is fixed to the PTFE support 5 and connected to the inlet pipe 4. For details, see [link to details]. Figure 4 A PTFE connecting block 7 is also provided between the PTFE support 5 and the intake pipe 4. The PTFE connecting block 7 is fixed to the intake pipe 4 by PTFE bolts 8, and the gas distributor is fixed to the PTFE support 5 by PTFE bolts 8.
[0038] In a preferred embodiment of this utility model, the air inlet pipe 4 is a steel pipe, and both the inner and outer surfaces of the steel pipe are lined with PTFE layers. The discharge pipe 1 is a PTFE pipe, and the discharge pipe 1 is provided with a plurality of discharge holes 101.
[0039] Specifically, see Figure 5 The discharge pipe 1 has a total of 7 discharge holes 101 from top to bottom, with the same spacing between the upper and lower rows, and the discharge holes 101 in adjacent rows are staggered; the number of discharge holes 101 in each row is 5.
[0040] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A gas distributor, characterized in that: The gas distributor is a tubular gas distributor, which includes several distribution tubes; each distribution tube is provided with several rows of horizontally arranged air holes, with 20-80 air holes in each row, and the air holes are located on the same side of the distribution tube; the center line of the several rows of horizontally arranged air holes is parallel to the horizontal plane.
2. The gas distributor according to claim 1, characterized in that: The gas distributor is a double-layer tubular gas distributor, which includes: each tubular gas distributor includes 5 distribution tubes, and the included angle between adjacent tubes in the 5 distribution tubes is the same.
3. A gas distributor according to claim 2, characterized in that: The two tubular gas distributors are arranged with a height difference in the horizontal direction; they are symmetrically arranged in the vertical direction, and the angles between adjacent tubes are the same.
4. A gas distributor according to claim 3, characterized in that: Each distribution pipe is provided with 3 rows of horizontal air holes, with 50 air holes in each row; the air holes in the middle row are parallel to the horizontal plane, and the air holes in the upper and lower rows form an angle of 45° with the air holes in the middle row.
5. A reaction vessel using the gas distributor according to claims 1-4, characterized in that: The reactor also includes an air inlet pipe located at the top of the reactor and extending downward into the interior of the reactor, and a discharge pipe located at the bottom of the reactor and extending upward into the interior of the reactor.
6. The reaction vessel according to claim 5, characterized in that: The reactor structure consists of an inlet pipe, a PTFE support, a PTFE connector, and an outlet pipe from top to bottom; the gas distributor is fixed to the PTFE support and is connected to the inlet pipe.
7. The reaction vessel according to claim 6, characterized in that: A PTFE connecting block is also provided between the PTFE support and the intake pipe. The PTFE connecting block is fixed to the intake pipe by PTFE bolts, and the gas distributor is fixed to the PTFE support by PTFE bolts.
8. A reaction vessel according to claim 6 or 7, characterized in that: The intake pipe is a steel pipe, and both the inner and outer sides of the steel pipe are lined with a PTFE layer.
9. A reaction vessel according to claim 6 or 7, characterized in that: The discharge pipe is a PTFE pipe, and the discharge pipe is provided with several discharge holes.
10. A reaction vessel according to claim 9, characterized in that: The discharge pipe has a total of 7 rows of discharge holes from top to bottom, with the upper and lower rows spaced at the same distance, and the discharge holes in adjacent rows are staggered; each row has 5 discharge holes.