CN101526318A - Thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower - Google Patents
Thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower Download PDFInfo
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- CN101526318A CN101526318A CN200910135701A CN200910135701A CN101526318A CN 101526318 A CN101526318 A CN 101526318A CN 200910135701 A CN200910135701 A CN 200910135701A CN 200910135701 A CN200910135701 A CN 200910135701A CN 101526318 A CN101526318 A CN 101526318A
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Abstract
The invention discloses a thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower. The cooling tower is an independent operating unit consisting of a shell side, a tube side and an anodic protection component; and two ends of a cylinder body of the shell side are connected with a cylinder body of a water tank which belongs to the tube side. The cooling tower is characterized in that: a sealing device fixing heat exchange tube bundles and the two ends of the shell side is formed on the inner wall at the two ends of the cylinder body of the shell side by welding a fixed tube plate; and the tube plate is positioned at the inner side on the periphery of the inner wall at the two ends of the cylinder body of the shell side, and the cylinder body of the shell side is welded with the cylinder body of the water tank for sealing connection; and two or more independent operating units are serially connected and divided into one or more high-temperature segment operating systems and one or more low-temperature segment operating systems with same or different number according to temperature. The cooling tower can solve the technical problems of high equipment investment cost, huge abandonment loss and the like of concentrated sulfuric acid coolers due to excessive use of stainless steel in the traditional concentrated sulfuric acid coolers.
Description
Technical field
The present invention relates to chemical mechanical equipment, refer in particular to a kind of thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower.
Background technology
Employed " anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler " is a kind of fixed tube plate type heat exchanger in the sulfuric acid production system at present, as shown in Figure 1.It is made up of shell side and tube side, and shell becomes the concentrated sulfuric acid, flows through by between import acid tube, shell-side cylinder inboard (two thin tubesheet inboards between) and heat exchanger tube beam tube and the sour runner formed of deflection plate, outlet acid tube, and their material is stainless steel.Tube side is walked cooling water, flow through by import water pipe, outlet water pipe, left water tank flat cover water side, right water tank flat cover water side, left water tank cylindrical shell inboard, right water tank cylindrical shell inboard, flanged (FLGD) left tube sheet water side, the water flow passage that flanged (FLGD) right tube sheet water side and heat exchanger tube beam tube inboard are formed, other is carbon steel to their material except that the back three is stainless steel.The cooling of hot concentrated sulfuric acid is performed such, the absorption acid that dry acid of coming out from the drying tower underflow or absorber column bottoms stream are come out, the flow through shell side of cooler, contact with heat exchanger tube beam tube outer wall is mobile, heat transferred heat exchanger tube beam tube outer wall, make the sour temperature drop of hot concentrated sulfuric acid be low to moderate the requirement that meets drying process or absorption technique, deliver to drying tower or absorption tower again, manipulate as dry or absorption, carry out so repeatedly.By the cooling water that cooling tower is sent here, the tube side of the cooler of flowing through contacts with the heat-exchanging tube bundle inside pipe wall is mobile, through the heat absorption that tube wall transmits, water temperature is raise, be sent to the cooling tower cooling again after, return cooler and be re-used as cooling water, carry out so repeatedly.
The heat exchange tube wall of this concentrated sulfuric acid cooler is very thin; under the situation of not taking any safeguard measure; move the leakage that just is corroded half a year approximately; but after the stainless steel surfaces that adopts the anodic protection technology that shell side is contacted with the concentrated sulfuric acid is protected; can improve about 20 times the service life of heat exchanger tube, so cooler should become " anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler ".The long service life of this concentrated sulfuric acid cooler, this row is safe and reliable, and important guarantee effect has been played in the normal operation that guarantees gas washing in SA production.But also there are the following problems: when heat exchanger tube is corroded leakage and when concentrated sulfuric acid cooler is scrapped, more than 15 times, can also uses flanged (FLGD) tube sheet for many years also together to be scrapped than the heat exchange thickness of pipe, this is a kind of bigger loss.
Summary of the invention
The purpose of this invention is to provide a kind of improved thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower; solving a large amount of use stainless steels that traditional concentrated sulfuric acid cooler exists, technical problem such as the high and loss from spoilage of the equipment investment expense of the concentrated sulfuric acid cooler that causes is big.
Thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower of the present invention, it is by shell side, and tube side and anodic protection parts are formed one and are independently moved the unit, and the cylindrical shell two ends of described shell side are connected with the water tank cylindrical shell that belongs to the tube side part; Be positioned at the cylindrical shell two ends inwall of shell side,, forming the fixedly sealing device of heat-exchanging tube bundle and shell side two ends by the welding fixed tube sheet; Described tube sheet is positioned at the inboard, outer of the cylindrical shell two ends inwall of shell side, and the cylindrical shell of described shell side adopts welded seal to be connected with the water tank cylindrical shell; Independently move units in series by above-mentioned two or several,, be divided into high temperature section, low-temperature zone operational system that single or multiple quantity equate or do not wait by the height of temperature.
The shell side length that described each series connection independently moves the unit is arranged to different length as required.
Described tube sheet adopts the thin tubesheet of tens millimeters thickness.
Advantage of the present invention and good effect: 1, replace common flanged (FLGD) tube sheet, can save stainless steel material and the corresponding processing charges of 70-80% with thin tubesheet; 2, shell-side cylinder adopts to be welded to connect for flange with the water tank cylindrical shell and is connected, and can save two simple steel flanges and corresponding processing charges; 3, the cooling system of many branch high and low temperature sections, the operation unit of high temperature section easily damage in advance than the operation unit of other sections to be scrapped, and the operation unit that only needs to change this section separately get final product, so has reduced scrap cost.
Description of drawings
Fig. 1 is traditional anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler.
Fig. 2 is an anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler of the present invention.
Fig. 3 is the syndeton schematic diagram of multistage train of the present invention.
The specific embodiment
The specific embodiment of the present invention is referring to accompanying drawing.
The present invention is by shell side, and tube side and anodic protection parts are formed, and shell side is walked the concentrated sulfuric acid; flow through by the import acid tube; the outlet acid tube, left thin tubesheet acid side, right thin tubesheet acid side; the shell-side cylinder inboard; the sour runner of forming with deflection plate between the heat exchanger tube beam tube, their material is stainless steel, and tube side is walked but water; flow through by the import water pipe; the outlet water pipe, left water tank flat cover water side, right water tank flat cover water side; water tank cylindrical shell inboard, a left side; right water tank cylindrical shell inboard, left thin tubesheet water is surveyed, the water flow passage that right thin tubesheet water side and heat exchanger tube beam tube inboard are formed; and the anodic protection parts that are arranged in shell-side, other is carbon steel to their material for the stainless steel except that the back.
Fig. 1 is the structural representation of employed in the present sulfuric acid production system " anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler ".It is made up of shell side, tube side and anodic protection system.Shell side is walked the concentrated sulfuric acid and is flowed through by import acid these (52); outlet acid tube (51), the sour side of flanged (FLGD) left tube sheet (41); the sour side of flanged (FLGD) right tube sheet (42), shell-side cylinder (60) inboard; between heat-exchanging tube bundle (80) pipe and the concentrated sulfuric acid formed of deflection plate (111) flow sour runner; add the anode protection device (101 that places shell side; 102), their material is stainless steel.Tube side is walked cooling water, flow through by import water pipe (31), outlet water pipe (32), left water tank flat cover (11) water side, right water tank flat cover (12) water side, left water tank cylindrical shell (71) inboard, right water tank cylindrical shell (72) inboard, flanged (FLGD) left tube sheet (41) water side, flanged (FLGD) right tube sheet (42) water side and the inboard water flow passage of forming of heat-exchanging tube bundle (80) pipe, other are carbon steel to their material except that the three master stainless steel of back, are carbon steel with the material of the concentrated sulfuric acid and all discontiguous left water tank flange of water (21) and right water tank flange (22).
Fig. 2 be the present invention designed be applicable to dry acid and common absorb sour a kind of " thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower " and structural representation.It is made up of shell side, tube side and anodic protection system; shell side is walked concentrated acid; flow through between import acid tube 52, outlet acid tube 51, thin tubesheet 91 sour sides, right thin tubesheet 92 sour sides, shell-side cylinder 60 inboards, heat-exchanging tube bundle 80 pipes and the concentrated sulfuric acid runner of deflection plate 111 compositions; add the anode protection device 101,102 that places shell side, their material is stainless steel.Tube side is walked cooling water, flows through by import water pipe 31, outlet water pipe 32, left water tank flat cover 11 water sides, right water tank flat cover 12 water sides, left water tank cylindrical shell 71 inboards.The water flow passage of right water tank cylindrical shell 72 inboards, left thin tubesheet 91 water sides, right thin tubesheet 92 water sides and the inboard composition of heat-exchanging tube bundle 80 pipes, other are carbon steel to their material for the stainless steel except that the back three.Be carbon steel with the material of the concentrated sulfuric acid and all discontiguous left water tank flange 21 of water and right water tank flange 22.
The new design of the present invention is as follows with the technical scheme of saving stainless steel material and carbon steel material:
1. new design adopts the thin tubesheet 91,92 of tens millimeter thickness to replace the common tube plate 41,42 of flange, and thin tubesheet 91,92 is solded in the shell-side cylinder 60 two ends inwalls, described thin tubesheet is positioned at the outer of the cylindrical shell 60 two ends inwalls of shell side, and the outer part that reserves is for being connected with water tank 71,72 butt welding.The stainless weight of thin tubesheet 91,92 usefulness only is the 20-30% that flanged (FLGD) common tube plate 41,42 used stainless steels weigh, stainless steel material and the corresponding processing charges that can save 70-80%.
2. new design is connected the connected mode of shell-side cylinder 60 and water tank cylindrical shell 71,72 and changes shell-side cylinder 60 into and water tank cylindrical shell 71,72 directly is welded to connect by the bolted of left water tank flange 23 and left tube sheet flange 41, right water tank flange and right tube sheet flange 42, can save two water tank flanges, 23,24 materials and processing charges accordingly.
When the present invention formed train, by high and low high temperature section, the low-temperature zone of being divided into of temperature, two sections isometric or not isometric.High temperature section and low-temperature zone can only be made of two series connection, referring to the syndeton of Fig. 3.Under the situation of high temperature more, if high temperature section and low-temperature zone have enough length, then can also be with high temperature section and low-temperature zone again by using after many platform independent operation units in series.The shell side length that described each series connection independently moves the unit is arranged to different length as required.
Claims (3)
1, a kind of thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower, it is by shell side, and tube side and anodic protection parts are formed one and are independently moved the unit, and the cylindrical shell two ends of described shell side are connected with the water tank cylindrical shell that belongs to the tube side part; It is characterized in that: be positioned at the cylindrical shell two ends inwall of shell side,, forming the fixedly sealing device of heat-exchanging tube bundle and shell side two ends by the welding fixed tube sheet; Described tube sheet is positioned at the inboard, outer of the cylindrical shell two ends inwall of shell side, and the cylindrical shell of described shell side adopts welded seal to be connected with the water tank cylindrical shell; Independently move units in series by above-mentioned two or several,, be divided into high temperature section, low-temperature zone operational system that single or multiple quantity equate or do not wait by the height of temperature.
2, a kind of described thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler as claimed in claim 1 is characterized in that: the shell side length that described each series connection independently moves the unit is arranged to different length as required.
3, a kind of described thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooler as claimed in claim 1 is characterized in that: tube sheet adopts the thin tubesheet of tens millimeters thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910135701A CN101526318A (en) | 2009-04-27 | 2009-04-27 | Thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910135701A CN101526318A (en) | 2009-04-27 | 2009-04-27 | Thin-tube-plate segment anodic protection stainless steel shell-and-tube concentrated sulfuric acid cooling tower |
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| CN101526318A true CN101526318A (en) | 2009-09-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801902A (en) * | 2015-04-20 | 2015-07-29 | 骏马石油装备制造有限公司 | Welding workstation for tube plate of cylinder fire tube and tube plate of smoke tube on production line of heating furnace |
| CN109668455A (en) * | 2017-10-13 | 2019-04-23 | 天华化工机械及自动化研究设计院有限公司 | Purposes of the Mo-contained alloy in concentrated sulfuric acid equipment |
| CN116294710A (en) * | 2023-04-25 | 2023-06-23 | 无锡宝丰石化装备有限公司 | Sectional type heat exchanger for chemical industry |
-
2009
- 2009-04-27 CN CN200910135701A patent/CN101526318A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801902A (en) * | 2015-04-20 | 2015-07-29 | 骏马石油装备制造有限公司 | Welding workstation for tube plate of cylinder fire tube and tube plate of smoke tube on production line of heating furnace |
| CN104801902B (en) * | 2015-04-20 | 2017-07-28 | 骏马石油装备制造有限公司 | The fiery cylinder of the cylinder of heating furnace production line and smoke pipe Tube-sheet Welding work station |
| CN109668455A (en) * | 2017-10-13 | 2019-04-23 | 天华化工机械及自动化研究设计院有限公司 | Purposes of the Mo-contained alloy in concentrated sulfuric acid equipment |
| CN116294710A (en) * | 2023-04-25 | 2023-06-23 | 无锡宝丰石化装备有限公司 | Sectional type heat exchanger for chemical industry |
| CN116294710B (en) * | 2023-04-25 | 2023-09-22 | 无锡宝丰石化装备有限公司 | Sectional type heat exchanger for chemical industry |
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