CN201253565Y - Outer cold type synthesis converter - Google Patents
Outer cold type synthesis converter Download PDFInfo
- Publication number
- CN201253565Y CN201253565Y CNU2008201103965U CN200820110396U CN201253565Y CN 201253565 Y CN201253565 Y CN 201253565Y CN U2008201103965 U CNU2008201103965 U CN U2008201103965U CN 200820110396 U CN200820110396 U CN 200820110396U CN 201253565 Y CN201253565 Y CN 201253565Y
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- housing
- reaction tube
- perforated plate
- external
- cooling type
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Abstract
The utility model discloses an outer cooling synthesizing tower which comprises a shell, an upper pipe plate, a lower pipe plate, at least a reaction pipe, a floating head and a bracket pipe, wherein the upper pipe plate is packaged at the upper part of the shell in a sealing way, and inserting holes are arranged on the upper pipe plate; one end of each reaction pipe is connected with an inserting hole on the upper pipe plate in a sealing way, and the reaction pipes are communicated with the upper part of the shell body sealed by the upper pipe plate, and are filled with catalysts; inserting holes are arranged on the lower pipe plate, and each inserting hole is connected with one end of each reaction pipe in a sealing way; the floating head is arranged inside the shell body, and an opening at one end of the floating head is connected with the periphery of the lower pipe plate in a sealing way; the bracket pipe is connected and communicated with the floating head; saturated water is contained in the outer sides of the reaction pipes, the floating head and the bracket pipe. The pipe bundle is immersed in the saturated water, so that the external cooling synthesizing tower can conveniently and effectively regulate the temperature of a catalyst bed layer to be uniform, can subsidiarily produce steam and reasonably utilize the heat energy.
Description
Technical field
The utility model relates to the fixed bed catalytic reactor field, particularly a kind of external-cooling type synthetic tower that is used for methyl alcohol/Fischer-Tropsch synthesis.
Background technology
Synthetic tower is modal a kind of reaction pressure vessel in coal, oil and the chemical industry, especially at synthetic ammonia and methyl alcohol, perhaps uses more extensive in the industrial process such as carbon monodixe conversion.No matter be domestic or external, in oil and chemical industry the structural shape of employed synthetic tower of a great variety, have nothing in common with each other.Press the formal classification that gas flows in beds, can be divided into two types of axial flow synthetic tower and Radial Flow synthetic towers.By the heat exchange formal classification, can be divided into three types of cold shock formula, inner-cooled and external-cooling types.But, no matter be the synthetic tower of which kind of form, its advantage and weak point are all respectively arranged.For example: the multistage cold shock formula synthetic tower of Britain ICI company, its advantage is that structure is comparatively simple, makes more conveniently, the synthetic output of column of separate unit is bigger, helps the commercial plant that production scale maximizes.It is inhomogeneous that but its significant disadvantage is a reaction temperature, and operation easier is big, and gas " back-mixing " phenomenon is comparatively serious, and therefore, conversion ratio is lower, and particularly the energy utilization is very unreasonable, can not byproduct steam.Again for example: the inner-cooled synthetic tower, as far back as last century five, the sixties, the single tube adverse current of extensive use just in the ammonia synthesizing industry device, single tube and stream, two sleeve pipes and stream and three sleeve pipes and stream etc. just belong to the inner-cooled synthetic tower.The advantage of this class synthetic tower is exactly to utilize the reaction heat of self that unstripped gas is carried out preheating.Its shortcoming is the reaction bed temperature inequality, and can not byproduct steam, and the synthetic tower of this structural shape is used for medium and small production-scale factory more, is difficult to realize that single series maximizes.In sum, mainly there is following several defective in existing synthetic tower:
1, reaction bed temperature is inhomogeneous, and some local temperature of beds is too high, and some local temperature is very low again, can cause life of catalyst to reduce like this;
2, the energy utilization is very unreasonable, can not byproduct steam, and the heat that causes catalytic reaction to produce can not be used effectively fully;
3, single tower production capacity is low, is difficult to adapt to the requirement that single series maximizes and produces;
4, operational suitability is poor.
The utility model content
The purpose of this utility model provides a kind of external-cooling type synthetic tower, effectively solve in the prior art reaction bed temperature inhomogeneous, can not byproduct steam etc. technological deficiency.
For achieving the above object, the utility model provides a kind of external-cooling type synthetic tower, comprising:
Housing;
Upper perforated plate, enclosed package has jack on described housing top on this upper perforated plate;
An airtight connection of jack at least one reaction tube, an end of every reaction tube and described upper perforated plate, the airtight housing top of reaction tube and described upper perforated plate is conducted, and is filled with catalyst in every reaction tube;
Lower perforated plate has jack on this lower perforated plate, and each jack is connected with the other end of a reaction tube is airtight;
Raise the nose above water to breathe, be placed in described enclosure interior, an end opening of this floating head and described airtight connection of lower perforated plate outer rim;
Trustship is connected and conducting this trustship lower end and the mutually airtight sealing-in of described housing with described floating head;
This enclosure interior, reaction tube, floating head and the trustship outside are equipped with saturation water.
The top of described housing has first inlet that is used to import reactant.The lower end of described housing has second inlet that is used to import saturation water.The top of described housing has the 3rd inlet that is used to import catalyst.Housing under the described upper perforated plate has first outlet that is used to derive saturation water and/or steam.The connecting portion of described trustship and floating head has the porcelain ball that is used for supporting catalyst and synthesis gas is flowed out smoothly.Described lower housing portion have be used to compensate described housing and raise the nose above water to breathe between the bellow expansion joint of differential expansion and sealing saturation water.Described upper perforated plate and housing top be encapsulated as the welding or flange be connected.The airtight sealing-in of described trustship and housing is that welding or flange are connected.The diameter of described reaction tube is 25～60 millimeters, and the length of described reaction tube is 6000～13000 millimeters.
The utility model external-cooling type synthetic tower is by being immersed in reaction tube in the saturation water, make and to take away reaction heat easily and effectively, regulate the temperature of beds, also can prolong catalyst life, and can byproduct steam, rationally utilize reaction heat energy, single tower output height, can realize that single series maximizes, and has the strong advantage of operational suitability in addition.
Description of drawings
Fig. 1 is the structural representation of the utility model external-cooling type synthetic tower first embodiment;
Fig. 2 is the structural representation of the utility model external-cooling type synthetic tower second embodiment;
Fig. 3 is the structural representation of the utility model external-cooling type synthetic tower the 3rd embodiment.
Description of reference numerals:
The 1-housing; The 2-upper perforated plate; The 3-reaction tube;
The 4-lower perforated plate; 5-raises the nose above water to breathe; The 6-trustship;
The 7-outlet; 8-first inlet; 9-second inlet;
10-the 3rd inlet; 11-first outlet; 12-porcelain ball;
The 13-bellow expansion joint; The 14-support column.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model external-cooling type synthetic tower first embodiment, as shown in Figure 1, the utility model external-cooling type synthetic tower comprises housing 1, upper perforated plate 2, reaction tube 3, lower perforated plate 4, floating head 5, trustship 6 and outlet 7, wherein, the top enclosed package of upper perforated plate 2 and housing 1, and have at least one jack on the upper perforated plate 2; In housing 1, also have at least one reaction tube 3, be filled with catalyst in the every reaction tube 3, one end of every reaction tube 3 all with upper perforated plate 2 on airtight a connection of jack, and the upper port of reaction tube 3 and upper perforated plate 2 the top of airtight housing 1 be conducted; Lower perforated plate 4 is positioned at the bottom of housing 1, also has at least one jack on it, each jack all with airtight connection of an end of a reaction tube 3; Have floating head 5 in the lower end of lower perforated plate 4, floating head 5 is placed in housing 1 inside, the upper end open of this floating head 5 and airtight connection of outer rim of lower perforated plate 4; The bottom of floating head 5 connects trustship 6 and is conducted with trustship 6, the lower end of this trustship 6 and housing 1 mutually airtight sealing-in, and a support column 14 that is used for rest porcelain ball and catalyst is arranged in trustship 6.In addition, all be equipped with saturation water in reaction tube 3, floating head 5 and trustship 6 outsides of housing 1 inside.
During the work of the utility model external-cooling type synthetic tower, from the unstripped gas of inlet tower gas preheater from the unstripped gas inlet at synthetic tower top enters reaction tube 3 in this synthetic tower, axial flow is crossed the beds in the reaction tube 3 from top to bottom, the reaction of generation catalytic exothermic, reaction heat is taken away quickly and evenly by reaction tube 3 outer saturation waters, can make that like this temperature of the beds in the reaction tube 3 is more even, catalyst can not produce overheated and lose efficacy, and can prolong service life.Reacted gas can flow out the next equipment that enters by the outlet 7 of housing 1 bottom.
The utility model external-cooling type synthetic tower makes and can take away reaction heat easily and effectively by reaction tube is immersed in the saturation water, regulates the temperature of beds, can also prolong catalyst life, and can byproduct steam, rationally utilizes reaction heat energy.
As shown in Figure 1, the utility model external-cooling type synthetic tower comprises housing 1, upper perforated plate 2, reaction tube 3, lower perforated plate 4, floating head 5, trustship 6 and outlet 7, wherein the diameter of reaction tube 3 is 60 millimeters of φ 25～φ, length is 6000～13000 millimeters, in addition, can also comprise 10, first outlet 11 of first inlet, 8, second inlet the 9, the 3rd inlet, porcelain ball 12 and bellow expansion joint 13 and support column 14.First inlet 8 that is used to import reactant is arranged at the top of housing 1, and the top of housing 1 also is provided with second inlet 9 that is used for loading catalyst, and the lower end of housing 1 is provided with the 3rd inlet 10 that is used to import saturation water; Be provided for deriving first outlet 11 of steam on the housing 1 of upper perforated plate 2 belows, the connecting portion of trustship 6 and floating head 5 has the porcelain ball 12 that is used for supporting catalyst and is beneficial to the smooth outflow of synthesis gas, and a support column 14 in order to supporting porcelain ball 12 and catalyst is arranged in the trustship 6, bottom at housing 1 also is provided with bellow expansion joint 13, bellow expansion joint 13 is used to compensate between housing 1 and the reaction tube 3 because the caused differential expansion of the temperature difference, but also can play sealing function to the saturation water in the housing 1.
The course of work of the utility model external-cooling type synthetic tower is such: as shown in Figure 1, to produce methyl alcohol is example, before the reaction, can import reactant from first inlet 8 on housing 1 top, import catalyst from second inlet 9 on housing 1 top, import saturation water from the 3rd inlet 10 of housing 1 lower end, about about 200 ℃ then from the unstripped gas temperature of inlet tower gas preheater, pressure is 5.0-6.0MPa, 8 beds that enter in the reaction tube 3 enter the mouth from first of synthetic tower top, axial flow is crossed this beds from top to bottom, and the catalytic exothermic reaction takes place.Reaction tube 3 all is immersed in the saturation water, like this can so that the catalytic reaction heat energy in the reaction tube 3 taken away by reaction tube 3 outer saturation waters quickly and evenly, saturation water is heated simultaneously, the steam that produces is derived from first outlet 11, steam water interface carries out just can obtaining middle pressure steam carbonated drink separation from removing drum, and the temperature parameter of this middle pressure steam is: such as when pressure is 1.8MPa, the temperature of middle pressure steam is 180 ℃, when pressure was 4.0MPa, the temperature of middle pressure steam was 250 ℃; The output of this middle pressure steam is: if be raw material with the coal, but one ton of methyl alcohol by-product of then every production middle pressure steam 0.9-1.1 ton, if be raw material with the natural gas, but one ton of methyl alcohol by-product of then every production middle pressure steam 0.8-1.0 ton.The by-product middle pressure steam can make that catalytic reaction heat energy is enough more effective to be used fully.In addition, the middle pressure steam of this by-product also has an effect, it is overheated that some place may appear in the temperature of the beds in the reaction tube 3 generally speaking, can cause life of catalyst to reduce, can take away quickly and evenly by the saturation water the reaction tube 3 except aforesaid, the pressure of middle pressure steam that can also be by regulating by-product is controlled the temperature of beds, and can regulate the temperature of focus and sensitive spot quickly and effectively, it is more even to make that reaction bed temperature distributes, catalyst lost efficacy with regard to not producing overheated, can prolong service life, and because the beds hotbed is controlled in the optimum range, so side reaction is few, higher alcohol, ether, aldehyde is few, and thick methanol product quality is good.Reaction tube 3 has also adopted the floating head structure, the upper end open of floating head 5 and the airtight lower tube box that connects to form of outer rim of lower perforated plate 4, free floating downwards just can solve in process of production the different differential expansions that form of owing to reaction tube and temperature different with the housing manufactured materials and make the junction of bundle of reaction tubes and housing and reaction tube and tube sheet produce the induce reaction problem of tracheal rupture of bigger thermal (temperature difference) stress.Gas comes out from reaction tube 3, through the porcelain ball 12 on support column 14 and its top, flows out from outlet 7 again.In addition, also be provided with FlexbleJoint 13 on the lower part outlet pipe of housing 1, can further compensate on the one hand between housing 1 and the reaction tube 3 owing to the caused differential expansion of the temperature difference, the saturation water to shell side also can play sealing function on the other hand.Reacted gas flows out next equipment that enters by the outlet 7 of housing 1 bottom.
The airtight sealing-in mode of trustship 6 and housing 1 bottom is welding among the above embodiment, it also can connect for flange, Fig. 2 is the structural representation of the utility model external-cooling type synthetic tower second embodiment, and as shown in Figure 2, the airtight sealing-in mode of trustship 6 and housing 1 bottom is that flange is connected.In addition, the packaged type on upper perforated plate 2 and housing 1 top is welding among the above embodiment, also can connect in addition for flange, Fig. 3 is the structural representation of the utility model external-cooling type synthetic tower the 3rd embodiment, as shown in Figure 3, the packaged type on upper perforated plate 2 and housing 1 top is that flange is connected, and when adopting flange to connect, internal-response pipe 3 is withdrawable structure.
The utility model external-cooling type synthetic tower list tower output is big, can realize that single series maximizes.With the natural gas is that raw material system methyl alcohol is example, and when housing 1 internal diameter was Φ 3400mm, corresponding methyl alcohol annual production was 400,000 tons, and when housing 1 internal diameter was Φ 4000-4200mm, corresponding methyl alcohol annual production was 600,000 tons; Catalyst can adopt homemade, as adopts the external catalyst yield can be higher.
The operational suitability of the utility model external-cooling type synthetic tower is stronger, and is all fine to the adaptability of catalyst, unstripped gas and raw material gas inlet temperature, and operating flexibility is big.The catalyst of the utility model external-cooling type synthetic tower can use domestic catalyst, as: C30Z type, XN-98 type that southwestern chemical research institute produces; NC-306 and 307 type catalyst that research institute of Nan Hua company produces more can use the catalyst of external production, as: the catalyst that rope company of Top produces.Unstripped gas can use with the synthesis gas (virgin gas CO:26-28%) of coal as raw material, also can use with the synthesis gas (CO:11-13%) of natural gas as raw material, the synthesis gas (catalyzed conversion and on-catalytic transform) that can also use oven gas to transform.The operation of raw material gas inlet temperature catalyst can be controlled 195 ℃-200 ℃ of bed inlet temperatures early stage, in 200 ℃-210 ℃ of mid-terms, in 210 ℃-220 ℃ of later stages, if change, also can adapt to.The utility model external-cooling type synthetic tower also can be operated under the load of 50%-120%.Housing and reaction tube material are easy to buying, and cost is relatively low.
In sum, the utility model external-cooling type synthetic tower is a kind of efficient, energy-saving synthetic tower, by bundle of reaction tubes is immersed in the saturation water, makes that the temperature that can regulate beds easily and effectively is even, the space-time yield height of catalyst, long service life; And can byproduct steam, rationally utilize reaction heat energy, single tower output height can realize that single series maximizes; The operational suitability of the utility model external-cooling type synthetic tower is strong in addition; Good product quality; Be convenient to make, keep in repair, transport, load and unload catalyst and heating reduction.
It should be noted that at last: above embodiment is only in order to explanation the technical solution of the utility model but not limit it, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement the technical solution of the utility model, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solutions of the utility model.
Claims (10)
1, a kind of external-cooling type synthetic tower is characterized in that comprising:
Housing;
Upper perforated plate, enclosed package has jack on described housing top on this upper perforated plate;
An airtight connection of jack at least one reaction tube, an end of every reaction tube and described upper perforated plate, the airtight housing top of reaction tube and described upper perforated plate is conducted, and is filled with catalyst in every reaction tube;
Lower perforated plate has jack on this lower perforated plate, and each jack is connected with the other end of a reaction tube is airtight;
Raise the nose above water to breathe, be placed in described enclosure interior, an end opening of this floating head and described airtight connection of lower perforated plate outer rim;
Trustship is connected and conducting this trustship lower end and the mutually airtight sealing-in of described housing with described floating head;
This enclosure interior, reaction tube, floating head and the trustship outside are equipped with saturation water.
2, external-cooling type synthetic tower according to claim 1 is characterized in that, the top of described housing has first inlet that is used to import reactant.
3, external-cooling type synthetic tower according to claim 2 is characterized in that, the top of described housing has second inlet that is used to import catalyst.
4, external-cooling type synthetic tower according to claim 3 is characterized in that, the lower end of described housing has the 3rd inlet that is used to import saturation water.
5, external-cooling type synthetic tower according to claim 1 is characterized in that, the housing under the described upper perforated plate has first outlet that is used to derive saturation water and/or steam.
6, external-cooling type synthetic tower according to claim 1 is characterized in that, the connecting portion of described trustship and floating head has the porcelain ball that is used for supporting catalyst and synthesis gas is flowed out smoothly.
7, external-cooling type synthetic tower according to claim 1 is characterized in that, described lower housing portion have be used to compensate described housing and raise the nose above water to breathe between the bellow expansion joint of differential expansion and sealing saturation water.
8, external-cooling type synthetic tower according to claim 1 is characterized in that, described upper perforated plate and described housing top be encapsulated as the welding or flange be connected.
9, external-cooling type synthetic tower according to claim 1 is characterized in that, the airtight sealing-in of described trustship and housing is that welding or flange are connected.
10, external-cooling type synthetic tower according to claim 1 is characterized in that, the diameter of described reaction tube is 25～60 millimeters, and the length of described reaction tube is 6000～13000 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201103965U CN201253565Y (en) | 2008-09-16 | 2008-09-16 | Outer cold type synthesis converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201103965U CN201253565Y (en) | 2008-09-16 | 2008-09-16 | Outer cold type synthesis converter |
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| Publication Number | Publication Date |
|---|---|
| CN201253565Y true CN201253565Y (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201103965U Expired - Lifetime CN201253565Y (en) | 2008-09-16 | 2008-09-16 | Outer cold type synthesis converter |
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| CN (1) | CN201253565Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457563A (en) * | 2014-09-09 | 2016-04-06 | 航天长征化学工程股份有限公司 | Isothermal shift reactor with built-in tube bundle |
| CN110876910A (en) * | 2019-11-05 | 2020-03-13 | 中国石油化工股份有限公司 | Radial bed isothermal conversion furnace |
| CN113509894A (en) * | 2021-07-22 | 2021-10-19 | 中冶赛迪工程技术股份有限公司 | Moving bed gas-solid radial reactor |
-
2008
- 2008-09-16 CN CNU2008201103965U patent/CN201253565Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457563A (en) * | 2014-09-09 | 2016-04-06 | 航天长征化学工程股份有限公司 | Isothermal shift reactor with built-in tube bundle |
| CN110876910A (en) * | 2019-11-05 | 2020-03-13 | 中国石油化工股份有限公司 | Radial bed isothermal conversion furnace |
| CN113509894A (en) * | 2021-07-22 | 2021-10-19 | 中冶赛迪工程技术股份有限公司 | Moving bed gas-solid radial reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: The new Sichuan tonre Engineering Technology Co Ltd Assignor: Pang Yuxue Contract record no.: 2011510000133 Denomination of utility model: Outer cold type synthesis converter Granted publication date: 20090610 License type: Exclusive License Record date: 20110810 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090610 |
|
| CX01 | Expiry of patent term |