CN203333297U - Claus reactor suitable for raw material gas with high concentration - Google Patents
Claus reactor suitable for raw material gas with high concentration Download PDFInfo
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- CN203333297U CN203333297U CN2013203943200U CN201320394320U CN203333297U CN 203333297 U CN203333297 U CN 203333297U CN 2013203943200 U CN2013203943200 U CN 2013203943200U CN 201320394320 U CN201320394320 U CN 201320394320U CN 203333297 U CN203333297 U CN 203333297U
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Abstract
The utility model discloses a Claus reactor suitable for raw material gas with high concentration. An upper-section outer cylinder is connected with a lower-section outer cylinder through a middle-section taper cylinder; the middle-section taper cylinder is connected with a support, a gas inlet is formed in the side surface of the lower-section outer cylinder, and a gas outlet is formed in the bottom surface of the lower-section outer cylinder; the inner side of the lower-section outer cylinder is connected with a lower tube plate, and an upper tube plate is connected with the lower tube plate through a tube bundle and further connected with a stainless steel inner cylinder filled with a catalyst; an annular gap is formed between the outer side of the stainless steel inner cylinder and the upper-section outer cylinder, and a folded plate centralizer which is not connected with the outer cylinder is connected to the outer side of the inner cylinder in the peripheral direction; produced gas channels in raw material channel tubes are arranged between tubes of the tube bundle. A housing is not in contact with high-temperature product gas and is suitable for higher reaction temperature caused by the raw material gas with high concentration, and a high temperature-resistant housing material and a heat-resistant lining are not required; an external heat exchanger is saved; the tube group is connected with the inner cylinder to constitute a floating inner piece combination which can be expanded upwards freely after being heated and is used for a Claus reaction of the raw material gas with high concentration for devices for recovering sulfur dioxide from smoke gas and producing sulfur.
Description
Technical field
The utility model relates to chemical industry equipment, is specifically related to a kind of claus reaction device that is applicable to the high density unstripped gas.
Background technology
Classical Sulfur Recovery Unit technology
Crouse's technology is hydrogen sulfide to be changed into to the commercial run of sulphur, by Britain C.F. Crouse, in invention in 1883, is widely used in from the hydrogen sulfide of coal, oil, the enrichment of selexol process process and reclaims sulphur.
Crouse's primitive reaction principle
3H
2S+3/2O
2?==?3/xS
x+3H
2O+615kJ/mol
Above formula is called claus reaction, and the reaction of these classics is because strong heat release is difficult to the temperature that remains suitable, can only process tolerance by restriction and control temperature of reaction and obtain 80%～90% hydrogen sulfide transformation efficiency.
The thirties in 20th century, German method our company improves claus process, H
2the partial oxidation of S completes in two stages.First stage is 1/3 H
2s is oxidized to SO
2the free flame oxidizing reaction, be greater than at the 1200K temperature and carry out in oxidized still:
3H
2S+3/2O
2?==?SO
2+2H
2S+H
2O+518.9kJ/mol?（1）
Subordinate phase is remaining 2/3 H
2the SO that S and oxidized still generate
2reaction is less than at the 700K temperature and carries out on the catalyzer of oxidized still and claus reaction device:
3H
2S+3/2O
2?==?2H
2O+3/xS
x+96.1kJ/mol?（2）
The claus process flow process
Classical claus process flow process comprise partial oxidation obtain sulfurous gas, condensation divide sulphur, Process Gas again heat carry out the steps such as claus reaction, the burning of the unreacted hydrogen sulfide peroxide of tail gas.
Flow process is divided two kinds of flow-through method and shuntings
1, flow-through method claims again partial combustion process, and all acid gas enters oxidized still, strict dispensing air capacity, so that the whole hydro carbons perfect combustions in acid gas, and H
2s only has 1/3 to be oxidized to SO
2, in order to can make to remain 2/3 H
2s and the SO be oxidized to
2carry out catalyzed conversion under desirable proportioning, to obtain higher transformation efficiency.Oxidized still tail gas is through three grades of claus reaction devices, and has the level Four condenser to isolate the sulphur that every order reaction generates, and the reaction of next stage can try one's best and carry out to the direction of generation sulphur, the raising reactivity.Three grades of convertors, all adopt heat insulation-type, and the reactor outlet gas temperature is higher than inlet temperature.After isolating tail gas after liquid sulfur and trapping liquid sulfur by trap, tail gas enters incinerator, exists to take excess air unreacted hydrogen sulfide is all burned to the defects of discharging after sulfurous gas.The liquid sulfur of separating in condensers at different levels and trap flows into the sulphur storage tank, is sulfur product after moulding.
2, only have 1/3 acid gas in shunting by oxidized still and waste heat boiler, all the other stink damps of 2/3 with enter first-stage condenser after the heat boiler outlet gas phase is mixed, all the other flow processs are identical with flow-through method.This method is lower for sulfureted hydrogen gas concentration, and reaction heat is not enough to maintain the material condition of the reaction flame stabilization of acid gas partial oxidation.In oxidized still, without a large amount of sulphur, generate, the reaction load of claus reaction device is higher, while adopting adiabatic reactor, has the shortcoming that reaction temperature rising is too high, common equipment is difficult to bear.
Aforesaid classical Crouse's flow process, oxidized still generates most of sulphur, coagulates sulphur tail gas through three grades of claus reaction devices, and has the level Four condenser to isolate the sulphur that every order reaction generates, the reaction of next stage can be tried one's best and carry out to the direction that generates sulphur, improve reactivity.Three grades of convertors, all adopt heat insulation-type, and the reactor outlet gas temperature is higher than inlet temperature.
Problem is that reaction temperature rising is how many, adopts what structure of reactor more reasonable.
The sulfur recovery technology that claus reaction device of the present utility model relates to
Claus reaction device of the present utility model is to meet a kind ofly to reclaim sulfurous gas from boiler smoke to produce the device needs of sulphur designed, the method that this device recovery sulfurous gas is produced sulphur is divided three steps, at first with reusable alkali liquor absorption sulfurous gas, makes the gas cleaning qualified discharge.The sulfur dioxide gas of purity more than 90% reused and obtained to absorption liquid through heat regeneration.Second step, shunt a part by sulfurous gas and enter reduction reactor, carries out reduction reaction with coal gas and generate sulphur and hydrogen sulfide.The 3rd step, adopt Kraus process to make hydrogen sulfide react and generate sulphur with the remaining sulfurous gas of shunting, and the sulphur condensation tail gas that contains remaining hydrogen sulfide and sulfurous gas imports the boiler appropriate location and burns, and sulfurous gas enters boiler exhaust gas and again reclaims.So guarantee that amount of sulfur contenting in smoke is up to standard all the time, the sulfurous gas of smoke absorption system recoveries all is converted into sulphur.
The sulfur dioxide concentration that the above-mentioned the first step obtains, more than 90%, substantially exceeds the sulphur content of general recovery sour gas, and claus reaction first step Outlet Gas Temperature can reach 500 ℃, and the claus reaction device of common iron manufacture can not bear.If steel surface overheated (over 343 ℃), can with H
2the S direct reaction.
Generally there is following several method to solve, the one, adopt isothermal reactor to remove waste heat from reaction bed, shortcoming is that equipment manufacturing cost is too high, for the catalyzer heatproof, claus reaction is uneconomical preferably; The 2nd, still adopt adiabatic reactor, but use more heat-resisting material manufacture instead, shortcoming or cost are too high, and the temperature of reaction product gas finally need to be reduced to condenser and isolates the required temperature of the product sulfur (130-160 ℃) and also need the cooling reaction product gas of heat-exchange equipment; The 3rd, the reactor of employing liner heat-stable material, shortcoming or complex structure cost are also very high.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, and working service is convenient, is applicable to the claus reaction device of high density unstripped gas
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: a kind of claus reaction device is connected to form successively by epimere urceolus, stage casing cone cylinder, hypomere urceolus, lower tubesheet, tubulation group, upper tubesheet, stainless steel inner core, special character of the present utility model is that catalyst bed is positioned in the middle of the stainless steel inner core, described stainless steel inner core is connected with the upper tubesheet that is positioned at its below, upper tubesheet is connected with the tubulation group that is positioned at its below, and the tubulation group is connected with the lower tubesheet that is positioned at its below; Described lower tubesheet is connected with the hypomere of hypomere urceolus is inboard, and the top cover of epimere urceolus is connected with manhole, stage casing cone cylinder connection bearing, and hypomere urceolus side has inlet mouth, bottom surface has air outlet, between stainless steel inner core and epimere urceolus, is annular space; The inlet mouth that hypomere urceolus side connects communicates with the suitable for reading of catalyst bed with the annular space between urceolus by space and inner core between the pipeline of tubulation group, and the end opening of catalyst bed communicates with the pneumatic outlet of hypomere urceolus bottom by space in the pipe of the tubulation group of its below; Described stainless steel inner core outside surrounding is connected with the flap centralizer, connects a ring baffle plate and another ring baffle plate between the pipe of described tubulation group.
But described stainless steel inner core connects and composes the fixedly internals molectron of upper end unmanaged flexibility of lower end by upper tubesheet, tubulation group, lower tubesheet and the hypomere urceolus inboard that is positioned at its below.
Upper tubesheet, tubulation group, the lower tubesheet of described stainless steel inner core below form the passage that cold air rises and hot gas descends.
The passage that described stainless steel inner core below cold air rises and hot gas descends, the built-in heat exchanger of formation cold air and hot gas heat exchange.
After unstripped gas enters reactor by inlet mouth, through between the pipe of tubulation group, fold-line-shaped rises and is preheated, the top that continuation rises to the reactor inner chamber by the annular space between interior bucket and urceolus enters the beds of inner core, flows downward in bed and reacts, and heat of reaction raises gas temperature.High-temperature product gas leaves bed through descending in the pipe of tubulation group, and the unstripped gas heat exchange of rising between the group heat conduction of nationality tubulation and pipe is lowered the temperature, and through outlet, leaves reactor.
The utility model compared with prior art, has three advantages.
1, shell of reactor does not contact high-temperature product gas, and the more high reaction temperature come than the common claus reaction device tolerance high-purity raw band of gas does not need to adopt more resistant to elevated temperatures sheating material;
2, utilize product gas decline passway and unstripped gas heat exchange, save external heat exchanger;
3, only have lower tubesheet to be connected with urceolus, tubulation group and inner core are floating structure, and the expansion that freely makes progress of being heated, be not subject to thermal stresses, thereby simple in structure durable, the simplification device flow process.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Figure elements explanation: 1, epimere urceolus, 2, manhole, 3, stage casing cone cylinder, 4, bearing, 5, the hypomere urceolus, 6, inlet mouth, 7, air outlet, 8, lower tubesheet, 9, the tubulation group, 10-1, a ring baffle plate, 10-2, another ring baffle plate, 11, upper tubesheet, 12, stainless steel inner core, 13, alumina ball, 14, the flap centralizer, 15, catalyst bed.
Embodiment
Accompanying drawing is the utility model embodiment.
Below in conjunction with accompanying drawing, summary of the invention is described further:
Shown in Fig. 1, a kind of claus reaction device is connected to form successively by epimere urceolus, stage casing cone cylinder, hypomere urceolus, lower tubesheet, tubulation group, upper tubesheet, stainless steel inner core, catalyst bed 15 is placed in alumina ball 13 tops in the middle of being positioned at stainless steel inner core 12, described stainless steel inner core 12 is connected with the upper tubesheet 11 that is positioned at its below, upper tubesheet 11 is connected with the tubulation group 9 that is positioned at its below, and tubulation group 9 is connected with the lower tubesheet 8 that is positioned at its below; Described lower tubesheet 8 is connected with the hypomere of hypomere urceolus 5 is inboard, the top cover of epimere urceolus 1 is connected with manhole 2, stage casing cone cylinder 3 connects bearing 4, and inlet mouth 6 is established in hypomere urceolus 5 sides, bottom surface sets out gas port 7, between stainless steel inner core 12 and epimere urceolus 1, is annular space; The inlet mouth 6 that hypomere urceolus 5 sides connect is suitable for reading the communicating with catalyst bed (15) by the annular space between space between the pipeline of tubulation group 9 and stainless steel inner core 12 and epimere urceolus 1, and the end opening of catalyst bed 15 communicates with the pneumatic outlet 7 of hypomere urceolus 5 bottoms by space in the pipe of the tubulation group 9 below it; Described stainless steel inner core 12 outside surroundings are connected with flap centralizer 14, connect a ring baffle plate 10-1 and another ring baffle plate 10-2 between the pipe of described tubulation group 9.
Described stainless steel inner core 12 is connected by upper tubesheet 11, tubulation group 9, lower tubesheet 8 and hypomere urceolus 5 inboards of its below, but forms the fixedly internals molectron of upper end unmanaged flexibility of a lower end.
The passage that described stainless steel inner core below cold air rises and hot gas descends, the built-in heat exchanger of formation cold air and hot gas heat exchange.
A kind of process of new catalyst reduction reactor operation is as follows:
The unstripped gas that contains hydrogen sulfide and sulfurous gas enters reactor by inlet mouth, through between the pipe of tubulation group, with fold-line-shaped, rise by hot gas flow preheating in pipe, the top that the continuation rising rises to the reactor inner chamber by the annular space between interior bucket and urceolus enters the middle catalyst bed of inner core, described is SRC-T, SRC-A series and PSR-1, PSR-21, PSR-31, PSR-41, PSR-51 series etc., in the bed of catalyst bed, flow downward and hydrogen sulfide and the sulfurous gas generation sulphur that reacts under catalyst, reaction heat raises the temperature of reactant gases, the output gas high temperature that leaves the catalyst bed bottom is the highest, in the pipe of output gas by the tubulation group, descend, the unstripped gas heat exchange of rising between the group heat conduction of nationality tubulation and pipe and lowering the temperature, leave reactor through air outlet.Air outlet can directly enter the upstream device sulfur condenser without special water cooler cooling.
Claims (3)
1. a claus reaction device that is applicable to the high density unstripped gas, this reduction reactor is connected to form successively by epimere urceolus, stage casing cone cylinder, hypomere urceolus, lower tubesheet, tubulation bundle, upper tubesheet, stainless steel inner core, it is characterized in that catalyst bed (15) is placed in alumina ball (13) top in the middle of being positioned at stainless steel inner core (12), described stainless steel inner core (12) is connected with the upper tubesheet (11) that is positioned at its below, upper tubesheet (11) is connected with the tubulation bundle (9) that is positioned at its below, and tubulation bundle (9) is connected with the lower tubesheet (8) that is positioned at its below; Described lower tubesheet (8) is connected with the hypomere of hypomere urceolus (5) is inboard, the top cover of epimere urceolus (1) is connected with manhole (2), stage casing cone cylinder (3) is connected with bearing (4), hypomere urceolus (5) side has inlet mouth (6), bottom surface has air outlet (7), between stainless steel inner core (12) and epimere urceolus (1), is annular space; The inlet mouth (6) that hypomere urceolus (5) side connects is suitable for reading the communicating with catalyst bed (15) by the annular space between space between the pipeline of tubulation group (9) and stainless steel inner core (12) and epimere urceolus (1), and the end opening of catalyst bed (15) communicates by the pneumatic outlet (7) of the interior space of the pipe of the tubulation group (9) below it bottom hypomere urceolus (5); Described inner core (12) outside surrounding is connected with flap centralizer (14), connects a ring baffle plate (10-1) and another ring baffle plate (10-2) between the pipe of described tubulation group (9).
2. claus reaction device according to claim 1, is characterized in that described stainless steel inner core (12) connects and composes the fixedly unsteady internals combination in upper end of a lower end by upper tubesheet (11), tubulation group (9), lower tubesheet (8) and hypomere urceolus (5) inboard.
3. claus reaction device according to claim 1 and 2, it is again built-in heat exchanger that upper tubesheet (11), tubulation group (9), the lower tubesheet (8) that it is characterized in that described stainless steel inner core (12) below is configured to the passage that between a pipe, in the cold air upcast, hot gas descends simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203943200U CN203333297U (en) | 2013-07-04 | 2013-07-04 | Claus reactor suitable for raw material gas with high concentration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203943200U CN203333297U (en) | 2013-07-04 | 2013-07-04 | Claus reactor suitable for raw material gas with high concentration |
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| Publication Number | Publication Date |
|---|---|
| CN203333297U true CN203333297U (en) | 2013-12-11 |
Family
ID=49701988
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203943200U Expired - Fee Related CN203333297U (en) | 2013-07-04 | 2013-07-04 | Claus reactor suitable for raw material gas with high concentration |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381513A (en) * | 2017-09-14 | 2017-11-24 | 长沙有色冶金设计研究院有限公司 | A kind of high concentration SO2Flue gas temperature control converter and its technique for applying |
-
2013
- 2013-07-04 CN CN2013203943200U patent/CN203333297U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381513A (en) * | 2017-09-14 | 2017-11-24 | 长沙有色冶金设计研究院有限公司 | A kind of high concentration SO2Flue gas temperature control converter and its technique for applying |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20190704 |