CN105800554A - External header type water cooling controlled shift reactor - Google Patents
External header type water cooling controlled shift reactor Download PDFInfo
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- CN105800554A CN105800554A CN201610280376.1A CN201610280376A CN105800554A CN 105800554 A CN105800554 A CN 105800554A CN 201610280376 A CN201610280376 A CN 201610280376A CN 105800554 A CN105800554 A CN 105800554A
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- external
- external header
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- outer cylinder
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/12—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide
- C01B3/16—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide using catalysts
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0872—Methods of cooling
- C01B2203/0888—Methods of cooling by evaporation of a fluid
- C01B2203/0894—Generation of steam
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an external header type water cooling controlled shift reactor. A water cooling tube bundle, a distribution drum and a gas gathering drum are arranged in a bearing outer drum body of the reactor; an upper external header and a lower external header are respectively arranged on two ends of the bearing outer drum body; the water cooling tube bundle is interconnected through the upper external header and the lower external header. Feed gas enters into a drum body through a process gas inlet, enters into a catalyst bed layer through the outer distribution drum to carry out CO shift, and carries out controlled heat exchange with low temperature hydrothermal fluid in the water cooling tube bundle; shift gas subjected to reaction heat exchange left the reactor through the inner gas gathering drum and an outlet center pipe. The external header type water cooling controlled shift reactor provided by the invention adopts an external header structure, so that the water cooling pipe bundle can be independently checked and maintained, and the safety and the maintainability of a shift system core reactor are improved.
Description
Technical field
The present invention relates to a kind of external controlled shift-converter of header type water-cooled, namely a kind of wide warm area CO transformationreation actuator temperature effectively controls and the new construction of waste heat recovery, this structure has taken into full account under the harsh operating modes such as wide temperature region, alternating temperature are fast, vapour amount is big, how can be easy to again the inspection of accident and the new construction of maintenance while temperature controlling well, improve the security reliability of transformation system nucleus equipment.
Background technology
Prepare in the process of synthesis gas at raw materials such as natural gas, oil product or coals, all require over CO transformationreation to control C/Hratio (CO/H in synthesis gas2Mol ratio), reaction equation is as follows:
The feature of this reaction is that heat release is big, very easily temperature runaway, as without moving thermal control, temperature reaches as high as 600 DEG C；Wide temperature region, when using Co--Mo catalyst, its reaction warm area is 200-500 DEG C；Alternating temperature is fast, and namely conversion process Parameters variation is fast greatly, causes the Rapid Variable Design of temperature.Therefore, development recently as new technique, water cooling tube is begun to use to move the temperature control shift-converter of heat, the form of this kind of reactor mainly has: pipe header type water cooling tube reactor (see Figure 1A), double tube sheet header water cooling tube reactor (see Figure 1B), spherical header type water cooling tube reactor (see Fig. 1 C) and upper and lower tube-sheet type header water cooling tube reactor (see Fig. 1 D), the common ground of this four classes reactor is header to be all placed on inside reactor with water pipe combine as a whole mutually with catalyst bed, i.e. so-called built-in header structure.Its advantage is that structure is relatively easy meets Traditional Thinking, but disadvantage is when harsh transformationreation, when water pipe and header generation problem, such as pipe burst, header weld bond cracking leakage, internal cleaning and inspection etc., it is difficult to open header search problem, carry out maintenance etc., the shortcoming of this general character all increases the application risk of this kind of reactor, and therefore the version of header is the most important technical barrier of this kind of reactor design.
Summary of the invention
For overcoming prior art Problems existing, the invention provides a kind of external controlled shift-converter of header type water-cooled.
The present invention adopts the technical scheme that: a kind of external controlled shift-converter of header type water-cooled, it includes outer cylinder body, be positioned at described outer cylinder body two ends upper external header and under external header, it is positioned at the beds within described outer cylinder body and water-cooled tube bank, described beds includes silk screen, outer distributing barrel and interior gas collecting jar with ground-on cover plate, the gap passed through for process gas is left between outer wall and the inwall of outer cylinder body of described outer distributing barrel, the upper port of described interior gas collecting jar with ground-on cover plate is positioned at inside outer cylinder body, the lower port of interior gas collecting jar with ground-on cover plate extends to outside outer cylinder body as technique gas outlet, the upper port of described water-cooled tube bank is interconnected with described external header, water-cooled tube bank lower port with described under external header be interconnected.
Preferably, described upper external header or under external header include tube sheet, header lid, sealing bolt and cooling water inlet/moisture outlet, the port of water-cooled tube bank is welded on described tube sheet, is removably connected by described sealing bolt between described header lid and tube sheet.
Preferably, described external header and under the quantity of external header be 2-8, upper external header is distributed in the upper end surrounding of outer cylinder body, under external header be distributed in the lower end surrounding of outer cylinder body, upper external header and under external header be mutually correspondingly arranged between two.
Preferably, the quantity of described external header is 1, under the quantity of external header be 2-8, upper external header is arranged on the center, top of outer cylinder body, under external header be distributed in the lower end surrounding of outer cylinder body.
Preferably, the quantity of described external header is 2-8, under the quantity of external header be 1, upper external header is distributed in the upper end surrounding of outer cylinder body, under external header be arranged on the bottom center place of outer cylinder body, the lower port of described interior gas collecting jar with ground-on cover plate is through external header under described.
Preferably, described external header and under the quantity of external header be 1, upper external header is arranged on the upper end center place of outer cylinder body, under external header be arranged on the bottom center place of outer cylinder body, the lower port of described interior gas collecting jar with ground-on cover plate is through external header under described.
Preferably, the upper end of described outer cylinder body is provided with manhole, and the lower end of outer cylinder body is provided with lower manhole and self-unloading mouth.
The invention has the beneficial effects as follows: owing to adopting external header structure, manufacture best welding condition, and individually bobbin carriage can be carried out inspection and maintenance, improve heat release is strong, wide temperature region, alternating temperature are fast, temperature control the is difficult safety of transformation system core reaction device, maintainability.This reactor all has the suitability for the CO transformationreation of high and low temperature, and for other similar catalytic reactions, this reactor is also suitable.
Accompanying drawing explanation
Figure 1A is the structural representation of pipe header type water cooling tube reactor.
Figure 1B is the structural representation of double tube sheet header water cooling tube reactor.
Fig. 1 C is the structural representation of spherical header type water cooling tube reactor.
Fig. 1 D is the structural representation of upper and lower tube-sheet type header water pipe reactor.
Fig. 2 is the overall structure schematic diagram of the present invention.
Fig. 3 is the structural representation of external header.
Fig. 4 A is the structural representation of embodiment two.
Fig. 4 B is the structural representation of embodiment three.
Fig. 4 C is the structural representation of embodiment four.
Fig. 4 D is the structural representation of embodiment five.
In figure: 1-process gas entrance, the upper manhole of 2-, gas collecting jar with ground-on cover plate in 3-, 4-silk screen, 5-outer cylinder body, the outer distributing barrel of 6-, 7-beds, manhole under 8-, 9-self-unloading mouth, 10-process gas exports, 11-cooling water inlet, external header under 12-, 13-water-cooled is restrained, the upper external header of 14-, 15-moisture outlet, 16-tube sheet, 17-sealing bolt, 18-header lid.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment one.
As shown in Figure 2, a kind of external controlled shift-converter of header type water-cooled, it is characterized in that: include outer cylinder body 5, be positioned at described outer cylinder body 5 two ends upper external header 14 and under external header 12, it is positioned at the beds 7 within described outer cylinder body 5 and water-cooled tube bank 13, described beds 7 includes silk screen 4, outer distributing barrel 6 and interior gas collecting jar with ground-on cover plate 3, the gap passed through for process gas is left between outer wall and the inwall of outer cylinder body 5 of described outer distributing barrel 6, it is internal that the upper port of described interior gas collecting jar with ground-on cover plate 3 is positioned at outer cylinder body 5, it is outside that the lower port of interior gas collecting jar with ground-on cover plate 3 extends to outer cylinder body 5 as technique gas outlet 10, the upper port of described water-cooled tube bank 13 is interconnected with described external header 14, water-cooled tube bank 13 lower port with described under external header 12 be interconnected.
As shown in Figure 3, described upper external header 14 or under external header 12 include tube sheet 16, header lid 18, sealing bolt 17 and cooling water inlet 11/ moisture outlet 15, described water-cooled tube bank 13 is welded on tube sheet 16 with upper, is removably connected by described sealing bolt 17 between described header lid 18 and tube sheet 16.
The work process of the present invention is: unstripped gas is entered in reactor by process gas entrance 1, transformationreation is there is radially into beds 7 after outer distributing barrel 6 is uniformly distributed, the cryogen restrained in 13 with water-cooled carries out controllable type heat exchange, and reaction gas is come together in central canal by interior gas collecting jar with ground-on cover plate 3 and goes out reactor through process gas outlet 10；Cool down water then by cooling water inlet 11 through under external header 12 be distributed to water-cooled tube bank 13, cooling water in water cooling tube in uphill process with beds 7 process gas heat exchange, removing reaction heat, after heat absorption, steam water interface comes together in external header 14, delivers to drum through moisture outlet 15.
Embodiment two.
As shown in Figure 4 A, on the basis of embodiment one, described external header 14 and under the quantity of external header 12 be 2-8, upper external header 14 is distributed in the upper end surrounding of outer cylinder body 5, under external header 12 be distributed in the lower end surrounding of outer cylinder body 5, upper external header 14 and under external header 12 be mutually correspondingly arranged between two.
Embodiment three.
As shown in Figure 4 B, on the basis of embodiment one, the quantity of described external header 14 is 1, under the quantity of external header 12 be 2-8, upper external header 14 is arranged on the center, top of outer cylinder body 5, under external header 12 be distributed in the lower end surrounding of outer cylinder body 5.
Embodiment four.
As shown in Figure 4 C, on the basis of embodiment one, the quantity of described external header 14 is 2-8, under the quantity of external header 12 be 1, upper external header 14 is distributed in the upper end surrounding of outer cylinder body 5, under external header 12 be arranged on the bottom center place of outer cylinder body 5, the lower port of described interior gas collecting jar with ground-on cover plate 3 is through external header 12 under described.
Embodiment five.
As shown in Figure 4 D, on the basis of embodiment one, described external header 14 and under the quantity of external header 12 be 1, upper external header 14 is arranged on the upper end center place of outer cylinder body 5, under external header 12 be arranged on the bottom center place of outer cylinder body 5, the lower port of described interior gas collecting jar with ground-on cover plate 3 is through external header 12 under described.
Embodiment six.
High CO transformationreation:
Converting means is delivered to as unstripped gas, the composition (mol, butt) of this embodiment Raw gas: H after, pressurization purified from the raw gas of coal gasification apparatus2: 24.95%, CO:65.14%, CO2: 9.7%, all the other be methane, nitrogen, hydrogen sulfide, organic sulfur, etc., steam-to-gas ratio (in unstripped gas the ratio of water and butt gas molar amount): 0.835, temperature 240 DEG C, pressure 4.0MPa, middle CO concentration of working off one's feeling vent one's spleen after the external controlled shift-converter of header type water-cooled is down to 4.0～6.5% (mol, butts).
This external controlled shift-converter of header type water-cooled is to be beneficial in beds water-cooled reaction heat is removed in tube bank 13, the temperature making beds controls at 270～400 DEG C, water shifting heat is adopted in pipe, therefore it is entirely capable of realizing the stability contorting of temperature under different operating modes, thoroughly solve the situation of beds temperature runaway, simultaneously the middle pressure steam of by-product 2.5～4.0MPa.
The controlled shift-converter reasonable Arrangement water-cooled tube bank of this external header type water-cooled, makes beds there is rational high-temperature region (300～380 DEG C), improves response speed；Improve the conversion ratio of organic sulfur to more than 90% simultaneously, reduce the difficulty of desulfurizer.
The controlled shift-converter of this external header type water-cooled adopts radial flow arrangement, and reactor resistance is low to moderate 0.05MPa, and SR is low to moderate 0.15MPa；Adopting the board-like distributor of fish scale, gas is evenly distributed, and catalyst utilization is high.
This external controlled shift-converter of header type water-cooled passes through drum Steam pressure control reaction bed temperature, simple to operate, it is easy to control.The controlled shift-converter of this external header type water-cooled drives to promote hot water circuit to improve reaction bed temperature to more than 220 DEG C by pump or ejector, it is possible to achieve the slitless connection of production, connecing gas driving interval is closely zero.
Embodiment seven.
Low CO transformationreation:
With embodiment six the difference is that this embodiment imported raw material gas concentration is relatively low, the composition (mol, butt) of this embodiment Raw gas: H2: 51.52%, CO:5.5%, CO2: 41.10%, all the other be methane, nitrogen, hydrogen sulfide, etc., steam-to-gas ratio 0.348, temperature 200 DEG C, pressure 4.0MPa, after transformed reaction, CO concentration is down to 0.50% (mol, butt) below.
This controlled shift-converter chemical reaction of external header type water-cooled is similar to balance, and bed temperature is down to about 200 DEG C, greatly reduces supplementary mesohigh quantity of steam, decreases the load of follow-up heat reclaim unit, reduce operation energy consumption；Reclaim heat of reaction, by-product 0.5～1.0MPa saturated vapor simultaneously.
The controlled shift-converter of this external header type water-cooled adopts radial flow arrangement, and reactor resistance is low to moderate 0.05MPa；Adopting the board-like distributor of fish scale, gas is evenly distributed, and catalyst utilization is high.
This external controlled shift-converter of header type water-cooled integrates reaction and heat recovery, and converting means equipment is few, reclaims heat major part and completes in reactor, effectively reduces dew point corrosion, reduce equipment operation maintenance expense.
This external controlled shift-converter of header type water-cooled passes through drum Steam pressure control reaction bed temperature, simple to operate, it is easy to control.The controlled shift-converter of this external header type water-cooled drives to promote hot water circuit to improve reaction bed temperature to more than 200 DEG C by pump or ejector, it is possible to achieve the slitless connection of production, connecing gas driving interval is closely zero.
Preferred as above-described embodiment, the upper end of the outer cylinder body 5 of the present invention is provided with manhole 2, and the lower end of outer cylinder body 5 is provided with lower manhole 8 and self-unloading mouth 9.
Claims (7)
- null1. the external controlled shift-converter of header type water-cooled，It is characterized in that: include outer cylinder body (5)、Be positioned at described outer cylinder body (5) two ends upper external header (14) and under external header (12)、It is positioned at the internal beds (7) of described outer cylinder body (5) and water-cooled tube bank (13)，Described beds (7) includes silk screen (4)、Outer distributing barrel (6) and interior gas collecting jar with ground-on cover plate (3)，The gap passed through for process gas is left between outer wall and the inwall of outer cylinder body (5) of described outer distributing barrel (6)，It is internal that the upper port of described interior gas collecting jar with ground-on cover plate (3) is positioned at outer cylinder body (5)，It is outside that the lower port of interior gas collecting jar with ground-on cover plate (3) extends to outer cylinder body (5) as technique gas outlet (10)，The upper port of described water-cooled tube bank (13) and described external header (14) are interconnected，Water-cooled tube bank (13) lower port with described under external header (12) be interconnected.
- 2. the external controlled shift-converter of header type water-cooled according to claim 1, it is characterized in that: described upper external header (14) or under external header (12) include tube sheet (16), header lid (18), sealing bolt (17) and cooling water inlet (11)/moisture outlet (15), water-cooled tube bank (13) is welded on described tube sheet (16), is removably connected by described sealing bolt (17) between described header lid (18) and tube sheet (16).
- 3. the external controlled shift-converter of header type water-cooled according to claim 1 and 2, it is characterized in that: described external header (14) and under the quantity of external header (12) be 2-8, upper external header (14) is distributed in the upper end surrounding of outer cylinder body (5), under external header (12) be distributed in the lower end surrounding of outer cylinder body (5), upper external header (14) and under external header (12) be mutually correspondingly arranged between two.
- 4. the external controlled shift-converter of header type water-cooled according to claim 1 and 2, it is characterized in that: the quantity of described external header (14) is 1, under the quantity of external header (12) be 2-8, upper external header (14) is arranged on the center, top of outer cylinder body (5), under external header (12) be distributed in the lower end surrounding of outer cylinder body (5).
- 5. the external controlled shift-converter of header type water-cooled according to claim 1 and 2, it is characterized in that: the quantity of described external header (14) is 2-8, under the quantity of external header (12) be 1, upper external header (14) is distributed in the upper end surrounding of outer cylinder body (5), under external header (12) be arranged on the bottom center place of outer cylinder body (5), the lower port of described interior gas collecting jar with ground-on cover plate (3) is through external header (12) under described.
- 6. the external controlled shift-converter of header type water-cooled according to claim 1 and 2, it is characterized in that: described external header (14) and under the quantity of external header (12) be 1, upper external header (14) is arranged on the center, top of outer cylinder body (5), under external header (12) be arranged on the bottom center place of outer cylinder body (5), the lower port of described interior gas collecting jar with ground-on cover plate (3) is through external header (12) under described.
- 7. the external controlled shift-converter of header type water-cooled according to claim 1, it is characterized in that: the upper end of described outer cylinder body (5) is provided with manhole (2), the lower end of outer cylinder body (5) is provided with lower manhole (8) and self-unloading mouth (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280376.1A CN105800554A (en) | 2016-04-29 | 2016-04-29 | External header type water cooling controlled shift reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280376.1A CN105800554A (en) | 2016-04-29 | 2016-04-29 | External header type water cooling controlled shift reactor |
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| CN105800554A true CN105800554A (en) | 2016-07-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580626A (en) * | 2012-03-20 | 2012-07-18 | 南京国昌化工科技有限公司 | Double-shaft radial flow reactor |
| CN202747831U (en) * | 2012-05-07 | 2013-02-20 | 杭州林达化工技术工程有限公司 | Spiral coil heat exchanger and reactor with heat exchanger structure |
| CN104368282A (en) * | 2014-11-27 | 2015-02-25 | 南京聚拓化工科技有限公司 | Bundle tube type water bed reactor |
| CN204365252U (en) * | 2014-09-24 | 2015-06-03 | 楼韧 | A kind of large-scale reactor and device thereof |
| CN205616570U (en) * | 2016-04-29 | 2016-10-05 | 南京国昌化工科技有限公司 | Controllable shift -converter of external header formula water -cooling |
-
2016
- 2016-04-29 CN CN201610280376.1A patent/CN105800554A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580626A (en) * | 2012-03-20 | 2012-07-18 | 南京国昌化工科技有限公司 | Double-shaft radial flow reactor |
| CN202747831U (en) * | 2012-05-07 | 2013-02-20 | 杭州林达化工技术工程有限公司 | Spiral coil heat exchanger and reactor with heat exchanger structure |
| CN204365252U (en) * | 2014-09-24 | 2015-06-03 | 楼韧 | A kind of large-scale reactor and device thereof |
| CN104368282A (en) * | 2014-11-27 | 2015-02-25 | 南京聚拓化工科技有限公司 | Bundle tube type water bed reactor |
| CN205616570U (en) * | 2016-04-29 | 2016-10-05 | 南京国昌化工科技有限公司 | Controllable shift -converter of external header formula water -cooling |
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