Stepped cooling device of hydrogenation reducer
By designing a step cooling device in the hydrogen reductor, the temperature distribution is achieved using the inside of the tower cooler and return water regulating valve, the problems of frequent catalyst replacement and frequent side reactions are solved, and production costs are reduced.
Patent Information
- Application Number
- CN202421517438.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-29
AI Technical Summary
In the production process of powder coating additives, the materials in the intermediate storage tank are deflected in the hydrogen reductor due to the catalyst bulk, resulting in uneven reactions, uneven temperatures, frequent side reactions, and frequent catalyst replacements, which increases production costs.
A step cooling device for hydrogen reducer is designed, including setting up multiple sets of tower coolers from top to bottom in the reducing device body, each set of coolers is equipped with a return water regulating valve and a temperature detection device, the cooling pipe is directly in contact with the material for heat exchange, and a steam heat tracing coil and inter-section cooler are installed on the outside to assist in cooling.
The stable operation of the bed temperature of the hydrogenation reactor is achieved, the frequency of catalyst replacement is reduced, the production cost is reduced, the occurrence of side reactions is avoided, and the uniformity of temperature distribution is improved.
Smart Images
Figure CN222889784U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chemical production equipment, in particular to a step cooling device for a hydrogenation reducer. Background Art
[0002] In the production process of powder coating additives, the materials in the intermediate storage tank (about 70-75℃) are transported to the hydrogenation reducer through a high-pressure pump. The materials enter the reducer from the top of the tower through a pipeline (the operating temperature of the reducer is 101-115℃). Since the catalyst is in bulk in the reducer, it is very easy to have a biased flow during operation, resulting in uneven reaction and large temperature difference deviation on the left and right, which is not conducive to the long-term use of the catalyst. In addition, side reactions occur in areas with high catalyst temperatures, and frequent replacement of hydrogenation catalysts invisibly increases the operating costs of the enterprise, which is not conducive to the stable development of the enterprise. Therefore, it is urgent to develop a new process to solve the current production dilemma. Utility Model Content
[0003] In view of the above problems, the utility model provides a step cooling device for a hydrogenation reducer, which enables the bed temperature of the hydrogenation reactor to reach a stable operation mode, reduces the frequency of catalyst replacement, and reduces production costs.
[0004] A step cooling device for a hydrogenation reducer comprises a reducer body, wherein a plurality of groups of in-tower coolers are arranged in sequence from top to bottom in the reducer body, each group of in-tower coolers is equipped with a return water regulating valve, a temperature detection device is also arranged in the reducer body, and the return water regulating valve is communicatively connected with the temperature detection device.
[0005] Preferably, the in-tower coolers are multiple independent systems, each group of in-tower coolers is equipped with a set of inlet and return water cooling system, and each cooling system is equipped with a return water regulating valve.
[0006] Preferably, the in-tower cooler includes a fixed ring, which is connected to the inner wall of the reducer body, and a plurality of cooling pipes are arranged in the middle part of the fixed ring.
[0007] Preferably, the cooling pipes of the coolers in two adjacent layers of the tower are arranged in staggered directions.
[0008] Preferably, the return water regulating valve and the temperature detection device are configured in a one-to-one correspondence.
[0009] Preferably, a plurality of groups of steam heating coils are sequentially arranged on the outside of the reducer body from top to bottom.
[0010] Preferably, the steam heating coil is arranged in a coiled manner outside the reducer.
[0011] Preferably, an interstage cooler is provided in the outer middle part of the reducer body.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. Through the reducer design, the utility model can make the reducer temperature distribution more uniform, effectively prevent the reducer from cooling and causing bias flow, prevent the generation of by-products due to high reducer temperature, reduce system costs, and improve economic benefits.
[0014] 2. The cooling pipes of the coolers in the adjacent two layers of the tower are arranged in an alternating direction. The materials are effectively buffered when entering the lower cooler from the upper cooler, which plays a role in sufficient heat exchange.
[0015] 3. The cooling pipes of the cooler in the tower are in direct contact with the material and heat is exchanged inside the reducer with high heat exchange efficiency. In addition, multiple groups of cooling segments are used for heat exchange, which makes the temperature distribution of the upper and lower sections of the reducer more uniform and avoids local high temperatures. When the overall temperature of the lower section is high and the cooling water of the cooler in the tower cannot be turned on to cool it down, the reducer inter-section cooler can be put into use.
[0016] 4. The steam heating coil is spirally wrapped around the outside of the equipment to keep the equipment warm when it is stopped. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is the cooling pipe layout diagram of the cooler in the tower;
[0020] In the figure, 1. feed, 2. reducer body, 3. steam heating coil, 4. return water regulating valve, 5. cooler in tower, 6. temperature detection device, 7. inter-stage cooler. DETAILED DESCRIPTION
[0021] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0022] like Figure 1 As shown, the utility model discloses a step cooling device for a hydrogenation reducer, which installs multiple groups of in-tower coolers 5 from top to bottom inside the reducer body 2. The system calculates the heat generated when the reducer is in full load production, and evenly distributes the heat to these coolers to achieve uniform distribution of temperature in the reducer. These coolers are cooled by 65-70℃ hot water. The cooling pipes of the in-tower coolers directly contact the material, and heat is exchanged inside the reducer, with high heat exchange efficiency. In addition, multiple groups of cooling and segmented heat exchange make the temperature distribution of the upper and lower sections of the reducer more uniform, avoiding the phenomenon of local high temperature.
[0023] like Figure 2 As shown, the tower cooler 5 includes a fixed ring, which is connected to the inner wall of the reducer body, and a plurality of U-shaped tubular cooling pipes are arranged in the middle part of the fixed ring, and the arrangement directions of the cooling pipes of the two adjacent tower coolers are staggered. The staggered arrangement can effectively buffer the reaction materials when they enter the lower cooler from the upper cooler, so that the reaction materials slowly descend in the reducer body, and play a role in fully exchanging heat with the cooler.
[0024] The feed 1 is set at the top of the reducer body 2, and the pressure at the top of the tower is 3.75-3.85MPa. The temperature distribution of the reducer bed is 105-118℃, and the cooling water used by the cooler is 65-70℃ hot water, and the pressure of the cooling water is 0.45-0.55MPa. The hot water return water used for cooling the reducer enters the hot water tank for external delivery. Multiple groups of temperature detection devices 6 are set inside the reducer body 2, and the temperature detection device is communicated with the return water regulating valve 4 of the cooler. The system collects the temperature of each section in the reducer body, and the return water regulating valve 4 communicated with the temperature detection device of each section automatically adjusts the flow of cooling water according to the temperature.
[0025] A plurality of groups of 2.5Mpa steam heating coils 3 are arranged on the outer wall of the reducer body from top to bottom. The purpose of the arrangement of the device is to keep the reducer warm when the vehicle is parked.
[0026] An interstage cooler 7 is arranged in the middle part of the outer wall of the reducer body. When the overall temperature of the lower section of the reducer body is too high and the cooling water of the cooler in the tower is fully opened and cannot cool down, the interstage cooler 7 can be put into use to assist in cooling down.
[0027] The above description is only a preferred implementation method of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A step cooling device for a hydrogenation reducer, characterized in that: The reducer body comprises a reducer body (2), wherein a plurality of groups of in-tower coolers (5) are arranged in sequence from top to bottom in the reducer body, each group of in-tower coolers is equipped with a return water regulating valve (4), and a temperature detection device (6) is also arranged in the reducer body, and the return water regulating valve is communicatively connected with the temperature detection device.
2. A step cooling device for a hydrogenation reducer according to claim 1, characterized in that: The in-tower coolers are multiple independent systems, each of which is equipped with a set of inlet and return water cooling systems, and each cooling system is equipped with a return water regulating valve.
3. A step cooling device for a hydrogenation reducer according to claim 1, characterized in that: The in-tower cooler comprises a fixed ring, which is connected to the inner wall of the reducer body, and a plurality of cooling pipes are arranged in the middle part of the fixed ring.
4. A step cooling device for a hydrogenation reducer according to claim 3, characterized in that: The cooling pipes of the coolers in two adjacent layers of the tower are arranged in staggered directions.
5. A step cooling device for a hydrogenation reducer according to claim 1, characterized in that: The return water regulating valve (4) and the temperature detection device (6) are configured in a one-to-one correspondence.
6. A step cooling device for a hydrogenation reducer according to claim 1, characterized in that: Multiple groups of steam heating coils (3) are arranged in sequence from top to bottom on the outside of the reducer body (2).
7. A step cooling device for a hydrogenation reducer according to claim 6, characterized in that: The steam heating coil (3) is arranged in a coiled manner outside the reducer.
8. A step cooling device for a hydrogenation reducer according to claim 1, characterized in that: An interstage cooler (7) is provided in the outer middle portion of the reducer body (2).