CN202254913U - Tube bundle special for hydrogenation air cooler and with thermocouple for temperature measurement - Google Patents
Tube bundle special for hydrogenation air cooler and with thermocouple for temperature measurement Download PDFInfo
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- CN202254913U CN202254913U CN2011203129355U CN201120312935U CN202254913U CN 202254913 U CN202254913 U CN 202254913U CN 2011203129355 U CN2011203129355 U CN 2011203129355U CN 201120312935 U CN201120312935 U CN 201120312935U CN 202254913 U CN202254913 U CN 202254913U
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- tube
- bobbin carriage
- finned
- thermocouple
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Abstract
The utility model discloses a tube bundle special for a hydrogenation air cooler and with a thermocouple for temperature measurement. A reactant successively passes through a parallel tube bundle and a sixth tube box which are connected in series through the inlet of a first tube box and then flows out; the top of each fin tube in two tube bundle regions corresponding to the 1-3m connection position of the outlet of the first tube box and the tube bundle and the inlet is provided with a thermocouple; the thermocouples are installed on the top of each fin which is arranged in the tube bundle regions corresponding to the two inlets at the positions of 1-2m away from the joint of the second-fifth tube boxes and respective corresponding parallel tube bundles along the bundle length direction and in the two end regions and middle region of a middle tube box; and the thermocouples are respectively installed in three regions corresponding to each fin at the two end regions at the positions of 0.2-1m away from the joint of the sixth tube box and the fifth row of fin bundles and the middle region of the tube boxes. According to the utility model, the thermocouples are installed on various tube layer bundles, thereby effectively monitoring ammonium salt flow deposition of a hydrogenation REAC (reactor effluent air cooler) system and the balance distribution of a flow field and reducing the operation risk of the hydrogenation REAC system.
Description
Technical field
The utility model relates to the utility model and relates to a kind of reaction effluent air cooler tube bundle system, specifically relates to the special-purpose tube bank of a kind of hydrogenation air cooler with thermocouple temperature measurement.
Background technology
Hydrogenation reaction outflow air-cooler system (Reactor Effluent Air Coolers; REAC) use very extensive in petrochemical industry, coal chemical technology; This kind equipment is as the important change system of chemical field; Bear high temperature, high pressure for a long time, face the hydrogen operating mode, the risk that mobile corrosion failure takes place is very big.The nineties in 20th century; Along with feedstock oil poor qualityization, device maximize, the development of operating condition harshnessization, the unplanned shutdown accident that mobile corrosion such as a lot of tube bank leakages, booster cause has taken place in many hydrocracking units REAC system behind experience high-sulfur capacity expansion revamping.For example domestic YZ company middle pressure hydrocracking device from 2005 1 to June next year, in year February in October, 2006 to 2008, accumulative total takes place 8 times and leaks the unplanned shutdown accident that causes by the REAC tube bank, the security of device is had a strong impact on.
For reversing the frequent passive situation of leaking of hydrogenation REAC system, China PetroChemical Corporation is in the national investigation of specialized groups knitting needle in 2006 to high-pressure air cooler; 2009, China PetroChemical Corporation organized the symposium of and electro-desalting operation anticorrosion about oil refining enterprise technology specially in Guangzhou, had stressed the anticorrosion importance of technology of hydrogenation REAC system again; 2010; China National Petroleum Corporation's specialized groups knitting needle is to the national investigation of Petrochemical Enterprises corrosion and protection; Investigation finds to comprise the hydrogenation plant of numerous oil refining enterprises such as DQ petrochemical industry, LH petrochemical industry, JZ petrochemical industry; The mobile corrosion failure problem that comprises critical equipment such as heat exchanger, air cooler is very severe, wherein outstanding with the mobile corrosion failure of ordinary decompression column top system heat exchanger, high-pressure hydrogenation heat exchanger and air cooler especially.To the said equipment, be example with hydrogenation REAC system, early-stage Study shows that the mobile corrosion failure of this kind equipment is closely related with processing Middle East high-sulfur crude oil with poor quality.Owing to be rich in nitrogen, sulphur compound and small amount of chloride in the raw material, generate H in the hydrogenation process
2S, HCl, NH
3Deng, and then generate NH
4HS and NH
4Two kinds of ammonium salts of Cl, along with the cooling of reaction effluent, said two kinds of ammonium salts directly become solid phase to stop up tube bank by vapor condensation.Stop up tube bank for preventing the ammonium salt crystallization deposition; Usually in the upper reaches water filling of hydrogenation REAC system, stop up, the ammonium salt of crystallization deposition is effectively washed though water filling can effectively prevent ammonium salt; But negative effect is to produce the higher etchant solution of corrosion concentration; Flow velocity is crossed slowly then can cause the ammonium salt underdeposit corrosion, and too fast then being prone to again of flow velocity causes local erosion, so the flow velocity of system receives very big restriction.
Existing research shows, NH
4HS and NH
4The crystallization deposition temperature of Cl is different, and for different device systems, because the nitrogen of feedstock oil, sulphur, chlorinity are different, operating condition is also different, thus its crystallization temperature also have nothing in common with each other, to general device, NH
4The crystallization deposition temperature of Cl is higher than 160 ℃, and NH
4The crystallization temperature of HS then is about 40 ℃, so for preventing the ammonium salt crystallization deposition, the mobile corrosion mechanism of hydrogenation REAC system diverse location is different.With regard to NH
4The crystallization deposition of Cl salt, because the inlet temperature of hydrogenation REAC system is about 140 ℃, so hydrogenation REAC system entry temperature is higher than the dew-point temperature of water, in case the amount of water filling aqueous water quantity not sufficient particularly, generation NH
4It is just high that Cl stops up the risk of the first comb bundle.And for NH
4HS, because its crystallization temperature is lower, the liquid water yield that water filling forms under this temperature is bigger, if flow velocity is too fast, then very easily causes the multi-phase flow erosion accident, so the science of carrying out the finned-tube bundle temperature to hydrogenation REAC system is monitored most important.
Summary of the invention
The purpose of the utility model is to provide a kind of hydrogenation air cooler with thermocouple temperature measurement special-purpose tube bank; The balanced distribution situation in deposition and each tube bank flow field but the ammonium salt in the effective monitoring hydrogenation REAC system running flows; Thereby scientific guidance is provided for the Optimizing operation of hydrogenation REAC system; Can significantly promote the anti-current moving corrosive power of hydrogenation REAC system, especially reduce the anti-NH of first tube side tube bank at processing high-sulfur crude oil with poor quality
4Cl and last tube side are restrained anti-NH
4The mobile corrosion risk of HS crystallization deposition prolongs safe, stable, the reliability service cycle of hydrogenation REAC system.
In order to achieve the above object, the technical scheme of the utility model employing is:
The utility model comprises first bobbin carriage, second bobbin carriage, the 3rd bobbin carriage, the 4th bobbin carriage, the 5th bobbin carriage, the 6th bobbin carriage, the parallelly connected finned-tube bundle of five rows; Reaction effluent enters into first bobbin carriage through two fluid media (medium) inlets of the first bobbin carriage top symmetric arrangement; Through the parallelly connected finned-tube bundle of first row, second bobbin carriage, the parallelly connected finned-tube bundle of second row, the 3rd bobbin carriage, the parallelly connected finned-tube bundle of the 3rd row, the 4th bobbin carriage, the parallelly connected finned-tube bundle of the 4th row, the 5th bobbin carriage, the 5th parallelly connected finned-tube bundle of row and the 6th bobbin carriage, two fluid media (medium) outlets that symmetry is offered from the 6th bobbin carriage bottom are at last flowed out then.Along the every piece finned tube top of tube bank length direction in entering the mouth corresponding two tube bank zones with first row parallelly connected finned-tube bundle junction 1～3m and two fluid media (medium)s thermocouple is installed all from the outlet of first bobbin carriage; Tube bank length direction in edge is all installed thermocouple in zone, bobbin carriage two ends in two the corresponding tube banks of fluid media (medium)s inlet in the position of the second bobbin carriage import, the 3rd bobbin carriage import, the 4th bobbin carriage import and the 5th bobbin carriage import and each self-corresponding parallelly connected finned-tube bundle junction 1～2m are regional and in the middle of described with every finned tube top in the zone line; In bobbin carriage two end regions of arranging parallelly connected finned-tube bundle junction 0.2～1m from the 6th bobbin carriage import and the 5th, thermocouple all is installed along the tube bank length direction with corresponding three the every finned tube bottoms of restraining in the zone of every finned tube of zone line; One end of described thermocouple is fixed through welding or the parallelly connected finned-tube bundle with every of clamp mode, and the other end is connected to the DCS data collecting system through data wire.
The finned tubes that described two fluid media (medium)s enter the mouth in corresponding two tube bank zones are 1～6.
Finned tube in the middle of described in the zone, bobbin carriage two ends is 2～5.Finned tube in the described zone line is 3～5.Described thermocouple outside all is equipped with protective cover.
The beneficial effect that the utlity model has is:
The special-purpose tube bank of a kind of hydrogenation air cooler with thermocouple temperature measurement that the utility model proposes can effectively monitor and control the first comb beam entrance, 1～3m and the NH that cause in the district occur doing
4Cl stops up the tube bank problem.Simultaneously because each tube side tube bank end all is equipped with temperature thermocouple; But the balanced distribution situation in effective monitoring hydrogenation REAC system flow field; In case tube bank bias current phenomenon occurs; Can in time take appropriate measures and prevent the tube bank perforation, leak, reduce the long-term operation risk of hydrogenation REAC system conscientiously.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the front view that first bobbin carriage is connected with the parallelly connected finned-tube bundle of first row.
Fig. 3 is the front view that middle bobbin carriage is connected with parallelly connected finned-tube bundle.
Fig. 4 is the front view that the 6th bobbin carriage is connected with the parallelly connected finned-tube bundle of the 5th row.
Among the figure: 1, fluid media (medium) inlet; 1 ', fluid media (medium) inlet; 2, fluid media (medium) outlet; 2 ', fluid media (medium) outlet; 3, first bobbin carriage; 4, second bobbin carriage; 5, the 3rd bobbin carriage; 6, the 4th bobbin carriage; 7, the 5th bobbin carriage; 8, the 6th bobbin carriage; 9, parallelly connected finned-tube bundle; 10, thermocouple; 11, protective cover.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
As shown in Figure 1, the utility model comprises first bobbin carriage 3, second bobbin carriage 4, the 3rd bobbin carriage 5, the 4th bobbin carriage 6, the 5th bobbin carriage 7, the 6th bobbin carriage 8, the parallelly connected finned-tube bundle of five rows; Reaction effluent enters into first bobbin carriage 3 through two fluid media (medium) inlets 1,1 ' of first bobbin carriage, 3 top symmetric arrangement; Through the parallelly connected finned-tube bundle of first row, second bobbin carriage 4, the parallelly connected finned-tube bundle of second row, the 3rd bobbin carriage 5, the parallelly connected finned-tube bundle of the 3rd row, the 4th bobbin carriage 6, the parallelly connected finned-tube bundle of the 4th row, the 5th bobbin carriage 7, the 5th parallelly connected finned-tube bundle of row and the 6th bobbin carriage 8, flow out from two fluid media (medium)s outlets 2,2 ' that the 6th bobbin carriage 8 bottom symmetries are offered at last then.From first bobbin carriage, 3 outlets and first parallelly connected finned-tube bundle 9 junctions, the 1～3m of row and two fluid media (medium) inlet 1,1 ' corresponding two every finned tube tops of restraining in regional A, the B thermocouple is being installed all along restraining length direction; Every finned tube top in bobbin carriage two ends zone C, E and the zone line D thermocouple all is installed along the tube bank length direction in entering the mouth the regional A of 1,1 ' the corresponding tube bank, B with two fluid media (medium)s in position of each self-corresponding parallelly connected finned-tube bundle junction 1～2m and in the middle of described from 4 imports of second bobbin carriage, 5 imports of the 3rd bobbin carriage, 6 imports of the 4th bobbin carriage and 7 imports of the 5th bobbin carriage; In the bobbin carriage two ends zone C of arranging parallelly connected finned-tube bundle junction 0.2～1m from the 6th bobbin carriage 8 imports and the 5th, E, thermocouple all is installed along the tube bank length direction with corresponding three the every finned tube bottoms of restraining in the zone of the every root finned tube of zone line D; One end of described thermocouple is fixed through welding or the parallelly connected finned-tube bundle 9 with every of clamp mode, and the other end is connected to the DCS data collecting system through data wire.
Finned tube in described two fluid media (medium)s inlet, 1,1 ' corresponding two regional A of tube bank, the B is 1～6.
Finned tube in the middle of described in bobbin carriage two ends zone C, the E is 2～5.Finned tube in the described zone line D is 3～5.Described thermocouple outside all is equipped with protective cover.
As shown in Figure 1, be one of structural representation of the utility model.Wherein comprise first bobbin carriage～the 6th bobbin carriage totally six bobbin carriages altogether; Between first bobbin carriage, 3 to the 6th bobbin carriages 8, connect through the parallelly connected finned-tube bundle of a row between the adjacent bobbin carriage, the quantity of the parallelly connected finned-tube bundle of a row is 50; Have six bobbin carriages in the utility model; The parallelly connected finned-tube bundle of five rows is promptly arranged, and the tube bank specification is identical, and the tube bank outside weldings has the radiating fin pipe.In Fig. 1; The top of first bobbin carriage 3 is along two fluid media (medium) inlets 1,1 ' of length direction vertical central plane symmetric arrangement of bobbin carriage; The 6th bobbin carriage 8 bottoms are along two fluid media (medium) outlets 2,2 ' of length direction vertical central plane symmetric arrangement of bobbin carriage, and wherein two fluid media (medium) inlets are identical with two geometric positions of fluid media (medium) outlet on bobbin carriage.At 1m and two fluid media (medium) inlet 1 and 1 ' corresponding two every finned tube tops of restraining in regional A, the B temperature thermocouple is installed all along restraining on the length direction apart from 3 outlets of first bobbin carriage and the parallelly connected finned-tube bundle of first row 9 junctions; Five thermocouples are respectively arranged in A, the B zone, identical along length direction A, the thermocouple installation site, internally finned tube top, B zone of tube bank; Along the tube bank length direction in the regional A of position two fluid media (medium)s, 1,1 ' the corresponding tube bank of distance second bobbin carriage 4 imports, 5 imports of the 3rd bobbin carriage, 6 imports of the 4th bobbin carriage and 7 imports of the 5th bobbin carriage and each self-corresponding parallelly connected finned-tube bundle junction 1.5m, B and every finned tube top in described second bobbin carriage～the 5th bobbin carriage two ends zone C, E and the zone line D temperature thermocouple all is installed; The finned tube quantity that comprises in C, E, three same A in zone of D, the B zone is identical; Promptly include five finned tubes; C, E, three zones of D and A, the zone that B is corresponding, the thermocouple at finned tube top is identical along the installation site of tube bank length direction; Along the tube bank length direction in the bobbin carriage two ends zone C of distance the 6th bobbin carriage 8 imports and the parallelly connected finned-tube bundle of the 5th row junction 0.5m, E with corresponding three the tube bank zones of the every finned tube of zone line D in every finned tubes bottom temperature thermocouple all is installed, the thermocouple in bobbin carriage two ends zone C, the E bottom the finned tube of zone line D is identical along the installation site of restraining length direction.Drain into the parallelly connected finned-tube bundle of the 5th row for first between first bobbin carriage 3, second bobbin carriage 4, the 3rd bobbin carriage 5, the 4th bobbin carriage 6, the 5th bobbin carriage 7 and the 6th bobbin carriage 8; The correspondence position up and down of adjacent rows finned-tube bundle is identical; The zone that is described different bobbin carriages all can be considered identical tube bank zone, in order to define and to describe the locus of finned tube.
As shown in Figure 2; It is the front view that first bobbin carriage is connected with the parallelly connected finned-tube bundle of first row; Fluid media (medium) inlet 1,1 ' is along bobbin carriage length direction symmetric arrangement; And the distance between two fluid media (medium)s enter the mouth just is 1/2 of a whole bobbin carriage length, and the side that bobbin carriage is connected with parallelly connected finned-tube bundle is laid with 50 finned-tube bundle connecting holes, respectively comprises five finned tubes in A, the B zone.Likewise, if the diameter of tube bank is less, then in A, B zone, can comprise more tube bank quantity.The temperature thermocouple of here installing requires monitor temperature to be lower than the dew-point temperature of water under the hydrogenation air-cooler system inlet pressure.
Front view as shown in Figure 3, as to be connected with parallelly connected finned-tube bundle for middle bobbin carriage.The intervalve case comprises second bobbin carriage 4, the 3rd bobbin carriage 5, the 4th bobbin carriage 6, the 5th bobbin carriage 7 here; Two zones of A, B of mark are the corresponding finned-tube bundle zone of the first comb bundle; C, E, three zones of D lay respectively at bobbin carriage length direction two ends and centre; Respectively comprise five tube banks, different middle bobbin carriages all is regarded as comprising C, E, three zones of D, and thermocouple is installed at the tube bank top in this zone.
As shown in Figure 4, be the front view that the 6th bobbin carriage 8 is connected with the parallelly connected finned-tube bundle of the 5th row.Comprise C, E, three zones of D altogether, promptly thermocouple is installed bottom the tube bank in 3 zones, the 5th row parallelly connected finned-tube bundle end bottom of the C of the 5th bobbin carriage 7, E, D correspondence in this zone, requires the monitor temperature of thermocouple will be higher than NH
4The crystallization temperature of Cl, NH usually
4The crystallization deposition temperature of HS is controlled at 40～50 ℃.
The special-purpose tube bank of a kind of hydrogenation air cooler that the utility model proposes with thermocouple temperature measurement; Between the adjacent bobbin carriage one arranged or arranged finned-tube bundle more is a tube side; The different pipe rows' of same tube side tube bank quantity is identical, but between the different tube side, the quantity of tube bank can be the same or different.The concrete technical process of the utility model is: fluid media (medium) gets into first bobbin carriage 3 through fluid media (medium) import 1 and 1 '; Then successively through the parallelly connected finned-tube bundle of first row, second bobbin carriage 4, the parallelly connected finned-tube bundle of second row, the 3rd bobbin carriage 5, the parallelly connected finned-tube bundle of the 3rd row, the 4th bobbin carriage 6, the parallelly connected finned-tube bundle of the 4th row, the 5th bobbin carriage 7, the parallelly connected finned-tube bundle of the 5th row; Enter into the 6th bobbin carriage 8; After fluid media (medium) outlet 2 and 2 ' outflow; Fluid media (medium) is flowed through and is reached the cooling of fluid media (medium) in the hydrogenation air cooler process; Accomplish whole technical process, wherein the thermocouple temperature measurement of the utility model proposition is mainly used in monitoring and control in the fluid media (medium) cooling procedure.
The above-mentioned specific embodiment is used for the utility model of explaining; Rather than the utility model limited; In the protection domain of the spirit of the utility model and claim,, all fall into the protection domain of the utility model to any modification and the change that the utility model is made.
Claims (5)
1. special-purpose tube bank of the hydrogenation air cooler with thermocouple temperature measurement comprises first bobbin carriage (3), second bobbin carriage (4), the 3rd bobbin carriage (5), the 4th bobbin carriage (6), the 5th bobbin carriage (7), the 6th bobbin carriage (8), the parallelly connected finned-tube bundle of five rows; Two fluid media (medium) inlets (1,1 ') of reaction effluent symmetric arrangement through first bobbin carriage (3) top enter into first bobbin carriage (3); Through the parallelly connected finned-tube bundle of first row, second bobbin carriage (4), the parallelly connected finned-tube bundle of second row, the 3rd bobbin carriage (5), the parallelly connected finned-tube bundle of the 3rd row, the 4th bobbin carriage (6), the parallelly connected finned-tube bundle of the 4th row, the 5th bobbin carriage (7), the 5th parallelly connected finned-tube bundle of row and the 6th bobbin carriage (8), two fluid media (medium) outlets (2,2 ') that symmetry is offered from the 6th bobbin carriage (8) bottom are at last flowed out then; It is characterized in that: with every finned tube top in first row parallelly connected finned-tube bundle (9) junction 1～3m and corresponding two the tube bank zones of two fluid media (medium) inlets (1,1 ') (A, B) thermocouple is being installed all from first bobbin carriage (3) outlet along the tube bank length direction; At every finned tube top in bobbin carriage two ends regional (C, E) in the corresponding tube bank zones of two the fluid media (medium)s inlets in position (1,1 ') (A, B) of second bobbin carriage (4) import, the 3rd bobbin carriage (5) import, (6) import of the 4th bobbin carriage and the 5th bobbin carriage (7) import and each self-corresponding parallelly connected finned-tube bundle junction 1～2m and in the middle of described and zone line (D) thermocouple is installed all along the tube bank length direction; In bobbin carriage two end regions (C, E) that leave the 6th bobbin carriage (8) import and the parallelly connected finned-tube bundle of the 5th row junction 0.2～1m and bottom the every finned tube in corresponding three the tube bank zones of every finned tube of zone line (D), thermocouple is installed all along the tube bank length direction; One end of described thermocouple is fixing through welding or the parallelly connected finned-tube bundle with every of clamp mode (9), and the other end is connected to the DCS data collecting system through data wire.
2. the special-purpose tube bank of a kind of hydrogenation air cooler with thermocouple temperature measurement according to claim 1, it is characterized in that: the finned tube in corresponding two the tube bank zones of described two fluid media (medium)s inlets (1,1 ') (A, B) is 1～6.
3. the special-purpose tube bank of a kind of hydrogenation air cooler with thermocouple temperature measurement according to claim 1, it is characterized in that: the finned tube in the middle of described in the zones, bobbin carriage two ends (C, E) is 2～5.
4. the special-purpose tube bank of a kind of hydrogenation air cooler with thermocouple temperature measurement according to claim 1, it is characterized in that: the finned tube in the described zone line (D) is 3～5.
5. the special-purpose tube bank of a kind of hydrogenation air cooler with thermocouple temperature measurement according to claim 1, it is characterized in that: described thermocouple outside all is equipped with protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203129355U CN202254913U (en) | 2011-08-25 | 2011-08-25 | Tube bundle special for hydrogenation air cooler and with thermocouple for temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203129355U CN202254913U (en) | 2011-08-25 | 2011-08-25 | Tube bundle special for hydrogenation air cooler and with thermocouple for temperature measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254913U true CN202254913U (en) | 2012-05-30 |
Family
ID=46116143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203129355U Withdrawn - After Issue CN202254913U (en) | 2011-08-25 | 2011-08-25 | Tube bundle special for hydrogenation air cooler and with thermocouple for temperature measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202254913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297607A (en) * | 2011-08-25 | 2011-12-28 | 杭州富如德科技有限公司 | Special tube bundle with thermocouple thermometry function for hydrogenation air cooler |
-
2011
- 2011-08-25 CN CN2011203129355U patent/CN202254913U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297607A (en) * | 2011-08-25 | 2011-12-28 | 杭州富如德科技有限公司 | Special tube bundle with thermocouple thermometry function for hydrogenation air cooler |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |