CN201008784Y - Shell pass multi-cavity type multi-layer bed fixed bed reactor - Google Patents
Shell pass multi-cavity type multi-layer bed fixed bed reactor Download PDFInfo
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- CN201008784Y CN201008784Y CNU2006201648402U CN200620164840U CN201008784Y CN 201008784 Y CN201008784 Y CN 201008784Y CN U2006201648402 U CNU2006201648402 U CN U2006201648402U CN 200620164840 U CN200620164840 U CN 200620164840U CN 201008784 Y CN201008784 Y CN 201008784Y
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Abstract
The utility model relates to a shell side multi-cavity type stratified bed-fixed bed reactor. At present, the tubular fixed-bed reactor adopts a shell side with one cavity, thus the heat transition is uneven; the heat exchange is insufficient, and the remnant heat is not used to advantage. The shell body of the utility model comprises a top shell body and a bottom shell body, wherein two shell sides baffles are arranged between a top tube plate and a bottom tube plate in each of the shell body along the axial direction of the shell body; the shell body is divided into the cavities by the shell side baffles; cavities of the two sides are provided inside with a reaction tube and three semicircular traverse baffle, thus the flow form of the heat exchanging medium between the tube is interlaced flow and parallel flow. The utility model doubles the capacity of manufacturing large reactors under the condition of the prior equipment; the reactor can be applied to high load activator and is stable in reaction, uniform in heat transition, sufficient in heat exchange and more thorough in remnant heat usage.
Description
Technical field:
The utility model relates to a kind of shell pass multi-cavity type multi-layer bed fixed bed reactor, and the reactor of this kind form is mainly used in the multi-layer fixed-bed fields of carrying out gas phase oxidation of application such as large-scale acrylic acid.
Background technology:
Along with the develop rapidly of chemical industry, the requirement of chemical equipment is more and more tended to maximize, the maximization of chemical equipment, from the operation complexity, energy-saving and cost-reducing, reduce aspect such as production run cost great benefit all arranged.There are the following problems for existing apparatus: 1, Zhuan Zhi separate unit production capacity is limited, can't satisfy the demand of market development; 2, device uses time unit's output energy consumption big, and effective rate of utilization is low, equipment operating cost height; 3, it is uneven that device moves heat, and the device interior temperature difference is big; 4, residual heat of reaction can't make full use of very little.
The utility model content:
The purpose of this utility model is to overcome the defective that exists in the prior art, provide a kind of be suitable for large-scale plant rational in infrastructure, move heat evenly, shell pass multi-cavity type multi-layer bed fixed bed reactor that energy consumption is low.
For achieving the above object, the technical solution adopted in the utility model is:
The multi-layer fixed-bed reactor of a kind of shell pass multi-cavity body, comprise upper cover bobbin carriage 1, upper perforated plate 2, first piece housing 4, reaction tube 5, sagging plate 9, second piece housing 13, lower perforated plate 14, low head bobbin carriage 15 etc. constitute reactor body, and adopt pump to circulate, adopt cooler to carry out heat exchange, its special character is: in described first piece housing 4 along housing shaft to first section shell side baffle plate 8 is set, baffle plate 8 is divided into three cavitys with shell side, in its both sides cavity reaction tube 5 is set; First piece housing 4 is outside equipped with first section cocircuit 3 and first section following circuit 7, is respectively arranged with circulating pump and cooler between first section cocircuit 3 and first section following circuit 7, on first piece housing 4 in the described upper and lower circuit through hole is set;
In described second piece housing 13 along housing shaft to second section shell side baffle plate 16 is set, baffle plate 16 is divided into three cavitys with second piece housing 13, in its both sides cavity reaction tube 5 is set; Second piece housing 13 is outside equipped with second section cocircuit 10 and second section following circuit 12, is respectively arranged with circulating pump and cooler between second section cocircuit 10 and second section following circuit 12, on second piece housing 13 in the described upper and lower circuit through hole is set.
Upper, middle and lower portion in the cavity of first above-mentioned piece housing 4 and second piece housing, 13 both sides is provided with deflection plate 8,16 respectively, middle deflection plate be shaped as semi-circular plate, the semi-circular plate that is shaped as position, center of circle band half round cut of upper and lower deflection plate; Middle deflection plate external diameter size is between the external diameter of the external diameter of upper and lower deflection plate and its half round cut.
By ascending rule aperture is set from inside to outside on the upper and lower deflection plate in the above-mentioned cavity.
Circulating pump on the above-mentioned reactor is single pump or double pump.
Above-mentioned multi-layer fixed-bed reactor is made of layer 2-4.
The above-mentioned multi-layer fixed-bed reactor of shell pass multi-cavity body is welded by symmetrical two parts.
The utility model is with respect to prior art, and its advantage is as follows:
1, reactor of the present utility model has adopted circuit perforate design, make heat transferring medium can be uniformly from the upper and lower circuit reactor of coming in and going out;
2, reactor of the present utility model has reduced kinetic energy consumption, has saved operating cost;
3, reactor of the present utility model adopts semicircle deflection plate, and adopts radially counter-boring techniques, has effectively controlled the axial and radial temperature difference of inside reactor;
4, to adopt the liquid form of inner heat transferring medium be that cross-flow has a small amount of concurrent flow concurrently to reactor of the present utility model, improved the heat exchanger effectiveness of system;
5, reactor of the present utility model has improved the production capacity of device;
6, the utility model is doubled the ability of processing reactor.
Description of drawings:
Fig. 1 is the structural representation of existing many bed reactors;
Fig. 2 is the structural representation of reactor of the present utility model;
Fig. 3 is the structural representation of housing of the present utility model and shell side baffle plate;
Fig. 4 is the utility model list pump hot media liquid form figure in the circuit at present;
Hot media liquid form figure in cocircuit when Fig. 5 is the utility model list pump;
Fig. 6 is the utility model double pump hot media liquid form figure in the circuit at present;
Hot media liquid form figure in cocircuit when Fig. 7 is the utility model double pump;
Fig. 8 is a heat transferring medium cross-flow passes schematic diagram in the reactor of the present utility model;
Fig. 9 is a upper and lower deflection plate shape and structure schematic diagram of the present utility model;
Figure 10 is a middle deflection plate shape and structure schematic diagram of the present utility model;
Figure 11 is a heat transferring medium concurrent flow flow schematic diagram in the reactor of the present utility model;
Figure 12 is single pump circuit middle shell perforate rule expanded view at present on the reactor circuit inner housing of the present utility model;
Figure 13 is cocircuit middle shell perforate rule expanded view during single pump on the reactor circuit inner housing of the present utility model;
Figure 14 is double pump half a perforate rule expanded view of circuit middle shell at present on the reactor circuit inner housing of the present utility model;
Figure 15 is half a perforate rule expanded view of cocircuit middle shell during double pump on the reactor circuit inner housing of the present utility model.
The specific embodiment:
Referring to Fig. 1, at present, it is the structure of a chamber that calandria type fixed bed reactor all adopts shell side, and it uses time unit's output energy consumption big, and effective rate of utilization is low, equipment operating cost height; Cause that easily heat is concentrated, be difficult to evenly shift out; And residual heat of reaction very little, can't make full use of.
Referring to Fig. 2, Fig. 3, the structure that the utility model is implemented is further elaborated: this calandria type fixed bed reactor comprises upper cover bobbin carriage 1, upper perforated plate 2, first piece housing 4, reaction tube 5, first section shell side baffle plate 8, sagging plate 9, second piece housing 13, lower perforated plate 14, low head bobbin carriage 15, second section shell side baffle plate 16 grade constitutes reactor body, first piece housing 4 is provided with first section cocircuit 3 and first section following circuit 7, between first section cocircuit 3 and first section following circuit 7, circulating pump and cooler are set respectively, on described, have the hole that size does not wait on first piece housing 4 in the following circuit, decide the uniformity coefficient of the heat transferring medium of inflow reactor by the size in design hole; Upper, middle and lower portion in first piece housing 4 is equipped with semicircle deflection plate 6, and this deflection plate 6 that is installed in upper and lower position is provided with aperture, and its perforate rule is little near position, the deflection plate center of circle, by radially outward increasing gradually.Between second section cocircuit 10 and second section following circuit 12, also be provided with circulating pump and cooler, have the hole that size does not wait on second piece housing 13 in described upper and lower circuit, decide the uniformity coefficient of the heat transferring medium of inflow reactor by the size in design hole; Semicircle deflection plate 11 is installed in second piece housing 13, and this deflection plate 11 is provided with aperture, and its perforate rule is little near position, the deflection plate center of circle, by radially outward increasing gradually.
Referring to Fig. 2, Fig. 3, the circulating technology that reactor of the present utility model adopts, be that circuit is provided with the import and export that are connected with pump, have the different hole of size on reactor shell 4 and 13, the percent opening that covers the hole outer cover plate by design decides the uniformity coefficient of the heat transferring medium of inflow reactor; During use, unstripped gas enters the reaction tube 5 in the reactor from the top of reactor, and the beds by in managing reacts; Course of reaction is emitted heat, and reaction heat reaches thermal medium by reaction tube, by circulation reaction heat is shifted out reactor by thermal medium; Thermal medium is squeezed into first section following circuit 7 by axial-flow pump, through the perforate equivalent on the reactor, radially enter between reaction tube, takes away reaction heat, flows into first section cocircuit 3 again.A large amount of thermal mediums is directly squeezed into first section following circuit 7 by axial-flow pump; Sub-fraction through the control of valve, flows into first section following circuit 7 from first section cocircuit 3 again behind subcooler.Thermal medium is axial cross-flow and has a small amount of concurrent flow concurrently and flow in reactor.Because the temperature difference of two sections needs, be provided with a cover thermal medium EGR equally at second section, its operation logic is: thermal medium is squeezed into second section following circuit 12 by axial-flow pump, through the perforate equivalent on the reactor, radially enter between reaction tube, take away reaction heat, flow into second section cocircuit 10 again.Thermal medium is directly squeezed into second section following circuit 12 by axial-flow pump; A part flows into second section following circuit 12 again from the control of second section cocircuit 10 through valve behind subcooler, the flow that enters the thermal medium of cooler by adjusting is controlled the temperature in the reactor tube.
Referring to Fig. 4, Fig. 5, Fig. 6, Fig. 7, circulating pump can be double pump or two kinds of forms of single pump, specific as follows: thermal medium enters the following circuit of reactor from pump, on the housing of following circuit internal reaction device, have the different hole of size, cover the percent opening difference of hole outer cover plate, fused salt is by this hole equivalent flowing between reactor tube radially, every section (promptly first section, second section) inside at reactor, be separated into 3 cavitys, reactionless pipe in the middle chamber, the pipe that responds in the cavity on both sides carries out heat exchange at this.
On the housing of cocircuit internal reaction device, have the different hole of size, thermal medium by this hole equivalent radially flow to the reactor cocircuit.
Referring to Figure 12, Figure 13, Figure 14, Figure 15, the hole that the size that having on the reactor circuit inner housing arranged by rule does not wait, the opening in shell rule expanded view that Figure 12-15 is, the arrow among the figure are the flow direction of hot media in circuit, and the both sides of figure are the circuit opening.
Referring to Fig. 4, Figure 12, when being connected pump on the circuit and being single pump, thermal medium enters the following circuit of reactor from pump, on the housing of following circuit internal reaction device, have the different hole of size, the rule in the hole on its housing is from circuit import down, the size in hole but diminishes suddenly apart from pumping hole hole farthest successively from small to large.
Referring to Fig. 5, Figure 13, when being connected pump on the circuit and being single pump, thermal medium by this aperture to flow to the reactor cocircuit, the rule in the hole on its housing is that the size in hole is successively from small to large from the cocircuit outlet.
Referring to Fig. 6, Figure 14, Figure 14 is double pump half a perforate rule expanded view of circuit middle shell at present on the reactor circuit inner housing of the present utility model;
When the pump on being connected circuit is double pump, thermal medium enters the following circuit of reactor from pump, on the housing of following circuit internal reaction device, have the different hole of size, the rule in the hole on its housing is from circuit import down, the size in hole successively from big to small, but down first hole of circuit import is less.
Referring to Fig. 7, Figure 15, Figure 15 are half perforate rule expanded view of cocircuit middle shell during double pump on the reactor circuit inner housing of the present utility model.
Be connected pump on the circuit when being double pump, thermal medium by this aperture to flow to the reactor cocircuit, the rule in the hole on its housing is that the size in hole is successively from small to large from the cocircuit outlet.
Referring to Fig. 8, every section (promptly first section, second section) inside of reactor is separated into 3 cavitys, reactionless pipe in the middle chamber, and the pipe that responds in the cavity on both sides carries out heat exchange at this.Thermal medium is behind following circuit inflow reactor, in the middle of flowing to uniformly earlier; Behind the close breach at baffle plate position of following deflection plate, begin again to flow to the reactor wall direction, after flowing through the outer of middle deflection plate, change direction and flow to the center, near behind the breach at baffle plate position, flow to reactor wall by last deflection plate more uniformly, pass the perforate on the reactor shell, flow into cocircuit, form cross-flow.
Referring to Fig. 9, Figure 10, the deflection plate in the housing has deflection plate and two kinds of shapes of middle deflection plate up and down.Upper, middle and lower portion in the housing is equipped with semicircle deflection plate, and this deflection plate that is installed in upper and lower position is provided with aperture, and its perforate rule is little near position, the deflection plate center of circle, by radially outward increasing gradually.
Number of baffles is looked every section pipe range and is determined, quantity is odd numbers such as 3,5, but erection sequence to be profile big comes odd number, profile is little comes even bit.
Referring to Figure 11, thermal medium uniformly in the process of intermediate flow, flows to the top behind following circuit inflow reactor, pass deflection plate after, flow to reactor wall again uniformly, pass the perforate on the reactor shell, flow into cocircuit, form concurrent flow.
Claims (6)
1. shell pass multi-cavity type multi-layer bed fixed bed reactor, comprise upper cover bobbin carriage (1), upper perforated plate (2), first piece housing (4), reaction tube (5), sagging plate (9), second piece housing (13), lower perforated plate (14), low head bobbin carriage (15) etc. constitute reactor body, and adopt pump to circulate, adopt cooler to carry out heat exchange, it is characterized in that: in described first piece housing (4) along housing shaft to first section shell side baffle plate (8) is set, baffle plate (8) is divided into three cavitys with shell side, and reaction tube (5) is set in its both sides cavity; First piece housing (4) is outside equipped with first section cocircuit (3) and first section following circuit (7), between first section cocircuit (3) and first section following circuit (7), be respectively arranged with circulating pump and cooler, on first piece housing (4) in the described upper and lower circuit through hole be set;
In described second piece housing (13) along housing shaft to second section shell side baffle plate (16) is set, baffle plate (16) is divided into three cavitys with second piece housing (13), and reaction tube (5) is set in its both sides cavity; Second piece housing (13) is outside equipped with second section cocircuit (10) and second section following circuit (12), between second section cocircuit (10) and second section following circuit (12), be respectively arranged with circulating pump and cooler, on second piece housing (13) in the described upper and lower circuit through hole be set.
2. shell pass multi-cavity type multi-layer bed fixed bed reactor according to claim 1, it is characterized in that: the upper, middle and lower portion in the cavity of described first piece housing (4) and second piece housing (13) both sides is provided with deflection plate (8), (16) respectively, middle deflection plate be shaped as semi-circular plate, the semi-circular plate that is shaped as position, center of circle band half round cut of upper and lower deflection plate; Middle deflection plate external diameter size is between the external diameter of the external diameter of upper and lower deflection plate and its half round cut.
3. shell pass multi-cavity type multi-layer bed fixed bed reactor according to claim 1 and 2 is characterized in that: by ascending rule aperture is set from inside to outside on the upper and lower deflection plate in the described cavity.
4. shell pass multi-cavity type multi-layer bed fixed bed reactor according to claim 3 is characterized in that: the circulating pump on the described reactor is single pump or double pump.
5. shell pass multi-cavity type multi-layer bed fixed bed reactor according to claim 1 and 2 is characterized in that: described multi-layer fixed-bed reactor is made of layer 2-4.
6. shell pass multi-cavity type multi-layer bed fixed bed reactor according to claim 1 and 2 is characterized in that: described shell pass multi-cavity type multi-layer bed fixed bed reactor is welded by symmetrical two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201648402U CN201008784Y (en) | 2006-12-27 | 2006-12-27 | Shell pass multi-cavity type multi-layer bed fixed bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201648402U CN201008784Y (en) | 2006-12-27 | 2006-12-27 | Shell pass multi-cavity type multi-layer bed fixed bed reactor |
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| Publication Number | Publication Date |
|---|---|
| CN201008784Y true CN201008784Y (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201648402U Expired - Lifetime CN201008784Y (en) | 2006-12-27 | 2006-12-27 | Shell pass multi-cavity type multi-layer bed fixed bed reactor |
Country Status (1)
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| CN (1) | CN201008784Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209402B (en) * | 2006-12-27 | 2011-11-30 | 西安航天华威化工生物工程有限公司 | Shell pass multi-cavity type multi-layer bed fixed bed reactor |
| CN102794138A (en) * | 2011-05-27 | 2012-11-28 | 中国石油化工股份有限公司 | Reactor for exothermic reaction and application of reactor |
| CN112588210A (en) * | 2021-01-15 | 2021-04-02 | 西安航天华威化工生物工程有限公司 | Benzoic anhydride reaction device capable of producing 8 ten thousand tons each year |
-
2006
- 2006-12-27 CN CNU2006201648402U patent/CN201008784Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209402B (en) * | 2006-12-27 | 2011-11-30 | 西安航天华威化工生物工程有限公司 | Shell pass multi-cavity type multi-layer bed fixed bed reactor |
| CN102794138A (en) * | 2011-05-27 | 2012-11-28 | 中国石油化工股份有限公司 | Reactor for exothermic reaction and application of reactor |
| CN102794138B (en) * | 2011-05-27 | 2014-07-09 | 中国石油化工股份有限公司 | Reactor for exothermic reaction and application of reactor |
| CN112588210A (en) * | 2021-01-15 | 2021-04-02 | 西安航天华威化工生物工程有限公司 | Benzoic anhydride reaction device capable of producing 8 ten thousand tons each year |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080123 Effective date of abandoning: 20061227 |