CN109046222B - Method for prolonging service life of high-temperature reactor - Google Patents
Method for prolonging service life of high-temperature reactor Download PDFInfo
- Publication number
- CN109046222B CN109046222B CN201811013980.3A CN201811013980A CN109046222B CN 109046222 B CN109046222 B CN 109046222B CN 201811013980 A CN201811013980 A CN 201811013980A CN 109046222 B CN109046222 B CN 109046222B
- Authority
- CN
- China
- Prior art keywords
- temperature reactor
- water
- tube
- plate
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00081—Tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention belongs to the field of chemical equipment, and particularly discloses a method for prolonging the service life of a high-temperature reactor, which comprises the following steps: (1) a support plate is arranged below the tube plate and fixedly connected with the heat exchange tube; (2) a baffle is fixedly arranged on the circumferential direction of the supporting plate, so that a water storage cavity is formed between the supporting plate and the baffle; an overflow port is formed between the baffle plate and the tube plate; (3) through holes are respectively formed in the side part of the high-temperature reactor body and the baffle; (4) the water outlet end of the water inlet pipe penetrates through the through hole, so that the water outlet end of the water inlet pipe is positioned in the water storage cavity; wherein the part of the water inlet pipe outside the high-temperature reactor body is provided with a valve; (5) when the high-temperature reactor works, the valve is opened, and water is introduced into the water storage cavity through the water inlet pipe; the sum of the water inlet flow of the water inlet pipe is not less than the sum of the water outlet flow of the overflow port. The method can prevent the tube plate from arching due to temperature difference, and prolong the service life of the high-temperature reactor.
Description
Technical Field
The invention relates to the field of chemical equipment, in particular to a method for prolonging the service life of a high-temperature reactor.
Background
The high-temperature reactor is called a small-sized high-pressure reaction kettle, a catalytic reaction kettle, a polymerization reaction kettle and a hydrogenation reaction kettle, generally refers to a reactor with the reaction temperature of more than 400 ℃, and is suitable for carrying out chemical and chemical reactions.
High temperature reactors generally include a reactor body, heat exchange tubes and tube sheets, with the heat exchange tubes passing through and being welded to the tube sheets. The existing high-temperature reactors are high in manufacturing cost, generally millions or even millions, but the service life of the high-temperature reactors is very short, generally only about half a year, namely every half a year, enterprises need to replace damaged high-temperature reactors, and the enterprises bear heavy economic burden.
Many large chemical enterprises want to prolong the service life of the high-temperature reactor, but have no way to do so because of the mislocation of the damage of the high-temperature reactor. The inventor researches for many years and creatively discovers the reason for influencing the service life of the high-temperature reactor.
As shown in fig. 5, when the high temperature reactor is in operation, the temperature inside the high temperature reactor body (a) is very high, generally reaching above 500 ℃, even up to 1000 ℃, and specifically, the temperature at the position below the tube sheet (b) at the upper end inside the high temperature reactor is very high, and the tube sheet is mostly made of metal, that is, the strength of the tube sheet is reduced after the tube sheet is heated, the middle part of the tube sheet (b) is arched upwards, and the heat exchange tube fixedly connected with the tube sheet (b) is also subjected to a very large pulling force. After tube sheet (b) middle part upwards hunch-up, can form an air cavity (c) between tube sheet (b) and high temperature reactor body (a), produced vapor will gather in this air cavity (c) in high temperature reactor body (a), make tube sheet (b) lower part can't contact with the lower water contact of temperature in the high temperature reactor and can only the higher water vapor contact of temperature, lead to tube sheet (b) lower part high temperature that is heated more like this, the vapor gathering is in the air cavity even, make the atmospheric pressure that the tube sheet receives increase, lead to tube sheet (b) to warp more easily, and the deformation of tube sheet (b) can make tube sheet (b) apart from the distance of the water in high temperature reactor body (a) more and more big, can't cooled down more, thereby lead to vicious circle. The deformation of the tube plate (b) which is arched upwards not only influences the service life of the tube plate (b), but also causes the heat exchange tube to be subjected to a large pulling force when the tube plate (b) is deformed because the heat exchange tube is fixedly connected with the tube plate (b), thereby further causing the damage of the tube plate (b), the heat exchange tube or the joint of the heat exchange tube and the tube plate (b), and influencing the service life of the high-temperature reactor.
Disclosure of Invention
The invention aims to provide a method for prolonging the service life of a high-temperature reactor, which can prevent a tube plate from arching due to temperature difference and prolong the service life of the high-temperature reactor.
In order to achieve the above purpose, the basic scheme of the invention is as follows: a method of extending the service life of a high temperature reactor comprising the steps of:
(1) a support plate is arranged below the tube plate at the upper part in the high-temperature reactor, the support plate is fixedly connected with the heat exchange tube, and the support plate is parallel to the tube plate;
(2) baffles are fixedly arranged on the circumferential direction of the supporting plate, so that a water storage cavity is formed among the supporting plate, the baffles and the tube plate; an overflow port is formed between the baffle plate and the tube plate;
(3) through holes are respectively formed in the side part of the high-temperature reactor body and the baffle;
(4) respectively enabling the water outlet end of the water inlet pipe communicated with a water source to pass through the through hole in the side part of the high-temperature reaction body and the through hole of the baffle plate, and enabling the water outlet end of the water inlet pipe to be located in the water storage cavity; wherein the part of the water inlet pipe outside the high-temperature reactor body is provided with a valve;
(5) when the high-temperature reactor works, the valve is opened, and water is introduced into the water storage cavity through the water inlet pipe; the sum of the water inlet flow of the water inlet pipe is not less than the sum of the water outlet flow of the overflow port.
The basic scheme has the following beneficial effects: 1. in the scheme, the tube plate is cooled by the water inlet pipe, the phenomenon that the temperature difference between two surfaces of the tube plate is too large is avoided, the tube plate is prevented from being deformed to form an air cavity and is always contacted with water vapor, the service life of the tube plate is prolonged, the service life of the high-temperature reactor is prolonged, and the service life of the high-temperature reaction is 3-4 times or even longer than that of the original high-temperature reaction. 2. In this scheme, the backup pad sets up in the below of tube sheet, and the tube sheet has formed the water storage chamber with the baffle, can guarantee that there is water in the water storage chamber always, can so that almost whole part of tube sheet can all be cooled off by the water of water storage intracavity, and the cooling effect is better and avoided contacting with vapor below the tube sheet all the time. 3. Form the overflow mouth between baffle and tube sheet, the water of water storage intracavity passes through the overflow mouth and flows, and the inlet tube is continuous into water, and the temperature degree that the inlet tube advanced is lower, and the water after being heated can flow through the overflow mouth, ensures that the temperature degree that is located the water storage intracavity is lower, and is better to the cooling effect of tube sheet like this. 4. The water flowing out of the overflow port enters the high-temperature reactor and is gasified, which is beneficial to the high-temperature reaction in the high-temperature reactor. 5. The sum of the water inlet flow of the water inlet pipe is not less than the sum of the water outlet flow of the overflow port. Therefore, cooling water can be ensured to enter the water storage cavity for cooling all the time, the water temperature in the water storage cavity is always in a lower state, and the cooling effect on the tube plate is better. 6. Only through setting up backup pad, baffle and inlet tube in this scheme just reached the cooling effect to the tube sheet, the cost is lower.
And furthermore, the heat exchanger also comprises a plurality of positioning pieces, and the tube plate and the heat exchange tube are fixedly connected through the positioning pieces in the step (1). The supporting plate is fixed on the heat exchange tube through the positioning piece, so that the operation is simple and the fixing effect is good.
Further, in the step (3), a plurality of through holes are uniformly formed along the circumferential direction of the high-temperature reactor body, and the number of the through holes formed in the baffle is consistent with that of the through holes formed in the high-temperature reactor body. Set up a plurality of through-holes and set up a plurality of inlet tubes promptly, the inlet tube evenly sets up along backup pad circumference for the temperature in the water storage cavity is even, has guaranteed that water intake efficiency and cooling effect are better.
Further, in the step (3), the number of the through holes is four. The four water inlet pipes ensure that water is uniformly fed, the cooling of the pipe plate is ensured to be uniform, the number of the water inlet pipes is reduced as much as possible, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a high temperature reactor of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a sectional view taken along line B of the high-temperature reactor of the present invention;
FIG. 4 is a schematic view of the heat exchange tube and support plate connection;
FIG. 5 is a schematic representation of a prior art deformation of a tubesheet.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: the reactor comprises a reactor body 1, a water inlet pipe 2, a pipe plate 3, a supporting plate 4, a heat exchange pipe 5, a water storage cavity 6, a baffle 7 and a fixed pipe 8.
The inventor researches for many years and creatively discovers the reason for influencing the service life of the high-temperature reactor. As shown in fig. 5, when the high temperature reactor is in operation, the temperature inside the high temperature reactor body (a) is very high, generally reaching above 500 ℃, even up to 1000 ℃, and specifically, the temperature at the position below the tube sheet (b) at the upper end inside the high temperature reactor is very high, and the tube sheet is mostly made of metal, that is, the strength of the tube sheet is reduced after the tube sheet is heated, the middle part of the tube sheet (b) is arched upwards, and the heat exchange tube fixedly connected with the tube sheet (b) is also subjected to a very large pulling force. After tube sheet (b) middle part upwards hunch-up, can form an air cavity (c) between tube sheet (b) and high temperature reactor body (a), produced vapor will gather in this air cavity (c) in high temperature reactor body (a), make tube sheet (b) lower part can't contact with the lower water contact of temperature in the high temperature reactor and can only the higher water vapor contact of temperature, lead to tube sheet (b) lower part high temperature that is heated more like this, the vapor gathering is in the air cavity even, make the atmospheric pressure that the tube sheet receives increase, lead to tube sheet (b) to warp more easily, and the deformation of tube sheet (b) can make tube sheet (b) apart from the distance of the water in high temperature reactor body (a) more and more big, can't cooled down more, thereby lead to vicious circle. The deformation of the tube plate (b) which is arched upwards not only influences the service life of the tube plate (b), but also causes the heat exchange tube to be subjected to a large pulling force when the tube plate (b) is deformed because the heat exchange tube is fixedly connected with the tube plate (b), thereby further causing the damage of the tube plate (b), the heat exchange tube or the joint of the heat exchange tube and the tube plate (b), and influencing the service life of the high-temperature reactor. To this end, the inventors have devised a high temperature reactor to solve the problem, and hereinafter, an embodiment of the high temperature reactor is described.
The embodiment is basically as shown in the attached figures 1-4: a method of extending the service life of a high temperature reactor comprising the steps of:
(1) a support plate 4 is arranged below the tube plate 3 at the upper part in the reactor body 1, each fixed tube 8 is sleeved outside one heat exchange tube 5, and the upper end of each fixed tube 8 supports the support plate 4; the support plate 4 is parallel to the tube plate 3, and the distance from the support plate 4 to the tube plate 3 is 50 mm;
(2) a baffle 7 is fixedly arranged on the circumferential direction of the support plate 4, so that a water storage cavity 6 is formed between the support plate 4 and the baffle 7; an overflow port is formed between the baffle 7 and the tube plate 3, and the distance from the baffle 7 to the tube plate 3 is 20 mm;
(3) four through holes are formed in the side part of the high-temperature reactor body 1 along the circumferential direction, four through holes are correspondingly formed in the baffle 7, and the through holes in the baffle 7 and the through holes in the high-temperature reactor body 1 are located on the same diameter;
(4) the water outlet end of the water inlet pipe 2 communicated with a water source respectively passes through the through hole at the side part of the high-temperature reaction body and the through hole of the baffle 7, so that the water outlet end of the water inlet pipe 2 is positioned in the water storage cavity 6; wherein the part of the water inlet pipe 2 positioned outside the high-temperature reactor body 1 is provided with a valve;
(5) when the high-temperature reactor works, the valve is opened, and water is introduced into the water storage cavity 6 through the water inlet pipe 2; the sum of the water inlet flow of the water inlet pipe 2 is not less than the sum of the water outlet flow of the overflow port.
When the high-temperature reactor generates high temperature and reacts, the water inlet pipe 2 is communicated to a water source, the valve is opened, and water in the water source enters the water storage cavity 6 through the water inlet pipe 2 and flows out through the overflow port. The water in the water storage cavity 6 cools and cools the tube plate 3, so that the tube plate 3 is prevented from deforming to form an air cavity and is always contacted with water vapor. And because the supporting plate 44 is parallel to the tube plate 3, the horizontal plane formed by the water in the water storage cavity 6 is also parallel to the tube plate 3, so that the water is uniformly contacted with the tube plate 3, and the cooling effect is better. The water in the water storage chamber 6 flows out through the overflow port, and the inlet tube 2 continuously intakes water, and the temperature of water that the inlet tube 2 intakes is lower, and the water after being heated can flow out through the overflow port, ensures that the temperature of water that is located the water storage chamber 6 is lower, and is better to the cooling effect of tube sheet 3 like this. The water flowing out of the overflow port enters the high-temperature reactor and is gasified, which is beneficial to the high-temperature reaction in the high-temperature reactor.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (4)
1. A method of extending the service life of a high temperature reactor comprising the steps of:
(1) a support plate is arranged below the tube plate at the upper part in the high-temperature reactor, the support plate is fixedly connected with the heat exchange tube, and the support plate is parallel to the tube plate;
(2) baffles are fixedly arranged on the circumferential direction of the supporting plate, so that a water storage cavity is formed among the supporting plate, the baffles and the tube plate; an overflow port is formed between the baffle plate and the tube plate;
(3) through holes are respectively formed in the side part of the high-temperature reactor body and the baffle;
(4) respectively enabling the water outlet end of the water inlet pipe communicated with a water source to pass through the through hole in the side part of the high-temperature reaction body and the through hole of the baffle plate, and enabling the water outlet end of the water inlet pipe to be located in the water storage cavity; wherein the part of the water inlet pipe outside the high-temperature reactor body is provided with a valve;
(5) when the high-temperature reactor works, the valve is opened, and water is introduced into the water storage cavity through the water inlet pipe; the sum of the water inlet flow of the water inlet pipe is not less than the sum of the water outlet flow of the overflow port.
2. A method of extending the useful life of a high temperature reactor as defined in claim 1, wherein: and the tube plate and the heat exchange tube are fixedly connected through the positioning pieces in the step (1).
3. A method of extending the useful life of a high temperature reactor as defined in claim 2, wherein: in the step (3), a plurality of through holes are uniformly formed along the circumferential direction of the high-temperature reactor body, and the number of the through holes formed in the baffle is consistent with that of the through holes formed in the high-temperature reactor body.
4. A method of extending the useful life of a high temperature reactor as defined in claim 3, wherein: in the step (3), the number of the through holes is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811013980.3A CN109046222B (en) | 2018-08-31 | 2018-08-31 | Method for prolonging service life of high-temperature reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811013980.3A CN109046222B (en) | 2018-08-31 | 2018-08-31 | Method for prolonging service life of high-temperature reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109046222A CN109046222A (en) | 2018-12-21 |
| CN109046222B true CN109046222B (en) | 2020-08-28 |
Family
ID=64759197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811013980.3A Active CN109046222B (en) | 2018-08-31 | 2018-08-31 | Method for prolonging service life of high-temperature reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109046222B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001031982A (en) * | 1999-07-19 | 2001-02-06 | Japan Gas Association | Heat exchanger and coal-gasification apparatus using this |
| CN205216808U (en) * | 2015-11-17 | 2016-05-11 | 安徽弘源化工科技有限公司 | Formaldehyde oxidation reaction unit |
| CN205288350U (en) * | 2016-01-04 | 2016-06-08 | 江阴市华燕石化机械装备有限公司 | Increase of service life's silver -colored division A league matches of french football aldehyde improves oxidizer |
-
2018
- 2018-08-31 CN CN201811013980.3A patent/CN109046222B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001031982A (en) * | 1999-07-19 | 2001-02-06 | Japan Gas Association | Heat exchanger and coal-gasification apparatus using this |
| CN205216808U (en) * | 2015-11-17 | 2016-05-11 | 安徽弘源化工科技有限公司 | Formaldehyde oxidation reaction unit |
| CN205288350U (en) * | 2016-01-04 | 2016-06-08 | 江阴市华燕石化机械装备有限公司 | Increase of service life's silver -colored division A league matches of french football aldehyde improves oxidizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109046222A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108837780B (en) | A kind of hydrogen storage reaction unit of the netted staggeredly floor of multilayer | |
| US10415888B2 (en) | Heat exchanger for exchanging heat between two fluids, use of the exchanger with liquid metal and gas, application to a fast neutron nuclear reactor cooled with liquid metal | |
| CN205919715U (en) | A novel heat exchanger for solar thermal power generation system | |
| CN210242495U (en) | Heat exchanger | |
| CN109046222B (en) | Method for prolonging service life of high-temperature reactor | |
| CN106610237A (en) | Novel carbon dioxide cooling device | |
| CN208959915U (en) | High-temperature reactor | |
| CN206321091U (en) | A kind of high-pressure carbon dioxide cooling device suitable for carbon dioxide stripping their | |
| CN210862348U (en) | Tube-plate heat exchanger head | |
| CN213335690U (en) | Gas heat exchanger | |
| CN210645161U (en) | Durable SO3Evaporator with a heat exchanger | |
| CN211425144U (en) | Floating pipe type heat exchanger | |
| CN208254299U (en) | A kind of self-support type finned-tube bundle and heat exchanger | |
| CN205919714U (en) | A novel heat exchanger for solar thermal power generation system | |
| CN210180239U (en) | Inner fin heat exchanger | |
| CN218916060U (en) | Heat exchanger tube bundle capable of improving heat exchange efficiency | |
| CN215893387U (en) | Flexible thin pipe plate structure for vertical large-diameter equipment | |
| CN221037017U (en) | Heat exchanger tube plate | |
| CN103868397A (en) | Belt-type tube clamp tube bundle support structure | |
| CN202092492U (en) | Tubular heat exchanger with annular tube plate | |
| CN203744809U (en) | Belt type tube clamp tube bundle support structure | |
| CN211176846U (en) | Multifunctional pressure vessel type catalytic oxidation reaction equipment | |
| CN207991329U (en) | A kind of gas re-heat device | |
| CN213873917U (en) | Float head tube box of loop heat exchanger with lantern ring packing box | |
| CN220288316U (en) | Water heater for recovering waste heat of high-temperature high-pressure process gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |