Pre-reactor cylinder
By using a combination structure of a stainless steel outer cylinder and a polytetrafluoroethylene inner cylinder in the pre-reactor shell, the problem of high cost of sulfuric acid corrosion resistant reactors was solved, achieving cost reduction and performance improvement.
Patent Information
- Application Number
- CN202423171109.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The high manufacturing cost of existing sulfuric acid corrosion resistant reactors is mainly due to the expensive Hastelloy materials.
The outer cylinder is made of stainless steel, and the inner cylinder is made of polytetrafluoroethylene and fixed with pins. The inner cylinder and the outer cylinder are fitted together to form the pre-reactor cylinder.
This reduces the reactor manufacturing cost to less than one-fifth of the cost of Hastelloy, while improving corrosion resistance and anti-sticking properties, thus extending the reactor's service life.
Smart Images
Figure CN223602499U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of corrosion -resistant reactor, and more specifically, relates to a pre -reactor cylinder. BACKGROUND
[0002] The reactor is the equipment for realizing the reaction process, and is widely used in chemical industry, oil refining, metallurgy, light industry and other industrial departments. Chemical reaction engineering takes the reaction process in the industrial reactor as the research object, uses the mathematical model method to establish the reactor mathematical model, studies the influence of the reactor transfer process on the chemical reaction and the dynamic characteristics and the reactor parameter sensitivity of the reactor, so that the reliable design and operation control of the industrial reactor are realized.
[0003] The reactor usually needs to have the characteristics of acid resistance or alkali resistance, and most of the reactors resistant to sulfuric acid corrosion in the prior art are usually made of hastelloy. Since the hastelloy is a precious metal, the unit price of the material is high, so that the cost of the reactor made of hastelloy is high. UTILITY MODEL CONTENT
[0004] The main purpose of the utility model is to provide a pre-reactor cylinder, which aims to solve the problem of high manufacturing cost of the sulfuric acid corrosion resistant reactor in the prior art.
[0005] In order to solve the above technical problems, a pre-reactor cylinder is provided, which comprises: an outer cylinder, which is provided in a circular tube shape;
[0006] A first end plate and a second end plate are symmetrically fixed on both sides of the outer cylinder, and the inner diameters of the first end plate and the second end plate are equal to the inner diameter of the outer cylinder;
[0007] An inner cylinder is provided in a hollow through manner, coaxially arranged on the inner side of the outer cylinder, and arranged in close contact with the outer cylinder, and the two ends of the inner cylinder extend to the outer side of the first end plate and the second end plate respectively, and the inner cylinder is made of polytetrafluoroethylene material.
[0008] In any of the above technical solutions, further, the first end plate and the second end plate are welded and fixed on the outer cylinder.
[0009] In any of the above technical solutions, further, the outer cylinder is made of stainless steel material.
[0010] In any of the above technical solutions, further, the inner diameter of the outer cylinder is 400 to 500 mm, and the wall thickness of the outer cylinder is 20 to 30 mm.
[0011] In any of the above technical solutions, further, the wall thickness of the inner cylinder is 20 to 30 mm.
[0012] In any of the above technical solutions, further, a plurality of fixing holes are arranged on the outer cylinder and the inner cylinder, and the extending direction of the fixing holes intersects with the axis of the outer cylinder.
[0013] In any of the above technical solutions, further, a pin is fixed at each of the fixing holes, and the two ends of each pin extend to the inner side of the inner cylinder and the outer side of the outer cylinder respectively.
[0014] In any of the above technical solutions, further, the friction coefficient of the inner side wall of the inner cylinder is 0.01 to 0.1.
[0015] Beneficial effects are that:
[0016] 1. The pre-reactor cylinder of the utility model can prolong the service life of the pre-reactor cylinder, improve the lubricity of the pre-reactor cylinder, and facilitate the reaction of raw materials in the reactor by virtue of the corrosion resistance and anti-adhesion of polytetrafluoroethylene which is used as the inner lining of the reactor.
[0017] 2. The pre-reactor cylinder of the utility model can reduce the cost of the roller to less than one fifth of the cost of making the roller from hastelloy, thereby meeting the reaction requirements and reducing the cost. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0019] Figure 1 is a three-dimensional structure schematic view of a pre-reactor cylinder of the utility model;
[0020] Figure 2 is a sectional structure schematic view of a pre-reactor cylinder of the utility model.
[0021] The signs in the drawings are explained as follows:
[0022] 1. outer cylinder;
[0023] 2. first end plate;
[0024] 3. second end plate;
[0025] 4. inner cylinder;
[0026] 5. pin. DETAILED DESCRIPTION
[0027] Hereinafter, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and thus cannot be used to limit the whole embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.
[0028] It should be noted that, as shown in the present application and claims, unless the context clearly indicates otherwise, the words "one", "a", "an", and / or "the" do not mean to specify a single number, but also can include a plurality. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.
[0029] If the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.
[0030] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing", etc. should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0031] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. For example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is also not within the scope of protection required by the present application.
[0032] A pre-reactor cylinder according to the present application is described in detail below through the following embodiments.
[0033] In the present embodiment, as shown in Figure 1 and Figure 2 , the pre-reactor cylinder comprises an outer cylinder 1 arranged in a circular tube shape;
[0034] A first end plate 2 and a second end plate 3 are symmetrically fixed on both sides of the outer cylinder 1, and the inner diameters of the first end plate 2 and the second end plate 3 are equal to the inner diameter of the outer cylinder 1.
[0035] An inner cylinder 4 is arranged coaxially inside the outer cylinder 1 and is in close contact with the outer cylinder 1, and both ends of the inner cylinder 4 extend to the outside of the first end plate 2 and the second end plate 3, respectively. The inner cylinder 4 is made of polytetrafluoroethylene material.
[0036] In the present technical solution, taking the horizontal arrangement of the outer cylinder 1 as an example, the outer cylinder 1 is made of 304 stainless steel material and is arranged in the left-right direction, and the inner and outer sides of the outer cylinder 1 are circular. The first end plate 2 and the second end plate 3 are flanges symmetrically welded and fixed on the left and right sides of the outer cylinder 1, and the inner diameters of the first end plate 2 and the second end plate 3 are equal to the inner diameter of the outer cylinder 1. The outer diameters of the first end plate 2 and the second end plate 3 are greater than the inner diameter of the outer cylinder 1. The inner cylinder 4 is made of powdered polytetrafluoroethylene and is pressed into the inner side of the inner cylinder 4, the left side of the first end plate 2, and the right side of the second end plate 3 by a mold. In use, the inner cylinder 4 directly contacts the reaction raw materials, which can reduce the corrosion of the reaction raw materials on the pre-reactor cylinder, prolong the service life of the pre-reactor cylinder, and also reduce the possibility of the reaction raw materials adhering to the inner wall of the inner cylinder 4 and promote the full mixing of the reaction raw materials.
[0037] In the present embodiment, the inner diameter of the outer cylinder 1 is 400 to 500 mm, and the wall thickness of the outer cylinder 1 is 20 to 30 mm.
[0038] In the present technical solution, the inner diameter of the outer cylinder 1 is 450 mm, the outer diameter of the outer cylinder 1 is 500 mm, and the wall thickness of the outer cylinder 1 is 25 mm.
[0039] In the present embodiment, the wall thickness of the inner cylinder 4 is 20 to 30 mm.
[0040] In the present technical solution, the wall thickness of the inner cylinder 4 is 25 mm.
[0041] In the present embodiment, a plurality of fixing holes are provided on the outer cylinder 1 and the inner cylinder 4, and the extension direction of the fixing holes intersects the axis of the outer cylinder 1.
[0042] In the technical solution, three rows of fixing holes are evenly arranged on the outer cylinder 1 and the inner cylinder 4, and the number of fixing holes in each row is set to ten. The fixing holes are arranged to facilitate the subsequent fixation of the pins 5, so as to scrape the reaction raw materials in the inner cylinder 4 through the pins 5 during the reaction, and facilitate the full reaction.
[0043] In the embodiment, the pins 5 are fixed at the respective fixing holes, and the two ends of each pin 5 extend to the inner side of the inner cylinder 4 and the outer side of the outer cylinder 1, respectively.
[0044] In the technical solution, the outer side end of the pin 5 is fixed at each fixing hole of the outer cylinder 1 by a bolt, and the inner side end of the pin 5 is clamped in the inner cylinder 4, and the inner side of the pin 5 is sealingly arranged between the inner cylinder 4 and the side wall of the inner cylinder 4.
[0045] In the embodiment, the friction coefficient of the inner side wall of the inner cylinder 4 is 0.01 to 0.1.
[0046] In the technical solution, the friction coefficient of the inner side wall of the inner cylinder 4 is 0.05.
[0047] The above has described the embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical applications, or improvements to the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.
Claims
1. A pre-reactor barrel characterized in that, The utility model relates to a kind of double-layered cylinder, including: Outer cylinder (1), is provided in tubular shape; First end plate (2) and second end plate (3), symmetrically fixed on the two sides of the outer cylinder (1), the inner diameter of the first end plate (2) and the second end plate (3) are equal to the inner diameter of the outer cylinder (1); Inner cylinder (4), hollowly through, coaxially arranged inside the outer cylinder (1), with the outer cylinder (1) is combined arrangement, and the two ends of the inner cylinder (4) are respectively extended to the first end plate (2) and the second end plate (3) outside, the inner cylinder (4) is made of polytetrafluoroethylene material.
2. The pre-reactor barrel of claim 1, wherein, The first end plate (2) and the second end plate (3) are welded and fixed on the outer cylinder (1).
3. The pre-reactor barrel of claim 1, wherein, The outer cylinder (1) is made of stainless steel material.
4. The pre-reactor barrel of claim 1, wherein, The inner diameter of the outer cylinder (1) is 400-500mm, and the wall thickness of the outer cylinder (1) is 20-30mm.
5. The pre-reactor barrel of claim 1, wherein, The wall thickness of the inner cylinder (4) is 20-30mm.
6. The pre-reactor barrel of claim 1, wherein, A plurality of fixing holes are provided on the outer cylinder (1) and the inner cylinder (4), and the extension direction of the fixing holes intersects with the axis of the outer cylinder (1).
7. The pre-reactor barrel of claim 6, wherein, A pin (5) is fixed at each fixing hole, and the two ends of each pin (5) extend to the inside of the inner cylinder (4) and the outside of the outer cylinder (1), respectively.
8. The pre-reactor barrel of claim 1, wherein, The friction coefficient of the inner wall of the inner cylinder (4) is 0.01-0.1.