CN102519280A - Anode protection plate shell type acid cooler - Google Patents
Anode protection plate shell type acid cooler Download PDFInfo
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- CN102519280A CN102519280A CN2011104196991A CN201110419699A CN102519280A CN 102519280 A CN102519280 A CN 102519280A CN 2011104196991 A CN2011104196991 A CN 2011104196991A CN 201110419699 A CN201110419699 A CN 201110419699A CN 102519280 A CN102519280 A CN 102519280A
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- heat exchanger
- exchanger plates
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- acid
- anode
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Abstract
The invention relates to a heat exchanger and anode protection anti-corrosion technology, in particular to an anode protection plate shell type acid cooler for concentrated sulfuric acid cooling. A heat exchange unit has an all-welded plate bundle structure. The plate pass medium is water, and the shell pass medium is acid. The shell pass is provided with a main cathode, a stainless steel plate serves as an anode, a control reference electrode and a monitor reference electrode are arranged, and concentrated sulfuric acid acts as conducting medium, to form anode protection, to therefore form a relatively stable passivation film on the plate. At the same time, the plate bundle is easily drawn out, and the plate pass and the shell pass can be conveniently cleaned. The inventive acid cooler has the advantages of a plate type heat exchanger such as high heat transfer efficiency, compact structure and light weight, and the advantages of a shell type heat exchanger such as high pressure bearing capacity, high temperature resistance, good sealing performance, high safety and reliability, convenient repair and low price.
Description
Technical field
The present invention relates to heat exchanger and anodic protection aseptic technic, relate in particular to a kind of anodic protection shell-and-plate acid cooler that is mainly used in concentrated sulfuric acid cooling.
Background technology
Concentrated sulfuric acid cooler is the visual plant in the sulphuric acid process, is mainly used in the cooling of recycle acid.Acid cooler is mainly used in concentration at 93-98%, and temperature is less than 130 ℃ sulfuric acid cooling procedure.Concentrated sulfuric acid cooler mainly contains sprinkle formula cooler, anodic protection shell and tube cooler, panel cooler and anodic protection panel cooler at present.
What early stage cooler generally adopted is fountain cast iron comb cooler; Because cooling coil exists that cooling effectiveness is low, floor space is big, installation and maintenance workload greatly, many characteristics such as security reliability is poor, environmental pollution is serious, low temperature exhaust heat can't utilize, cooling coil is replaced by the novel concentrated sulfuric acid cooler of various types gradually.
Board-like acid cooler is general to adopt corrosion resistant Hastelloy material to make, and its advantage is that heat transfer coefficient is high, floor space is little, material is corrosion-resistant, but equipment price is expensive; And because distance is little between the plate; Higher to requirements in water quality, resistance drop is big, and operating cost and maintenance cost are very high.
The anodic protection stainless steel shell-and-tube chiller applications is the most ripe and extensive; Anodic protection shell-and-tube acid cooler advantage is a corrosion resistance and good, and equipment resistance is less, but its heat transfer coefficient is low; Floor space is bigger; Heat exchanger tube was easy to generate vibration when the recycle acid amount was excessive, caused equipment to reveal, and worked as the circulation water side deposition and clean very difficulty.
China's patent 96237330.3 disclosed " the board-like acid cooler of anodic protection " is adorned main cathode at acid inlet with going out in the acid mouth, but when plate is long, is prone to cause the incomplete or excessive passivation of plate passivation.Adopt pad to need import simultaneously between plate, cost an arm and a leg, and difficult in maintenance.
More than several kinds of concentrated sulfuric acid coolers except its above-mentioned deficiency and drawback, when water quality was relatively poor, fouling was serious, was difficult to clean, when the recycle acid flow increases or after inlet temperature improves, more is difficult to satisfy the actual condition needs.
Summary of the invention
For overcoming the problems referred to above that existing cooler exists, the objective of the invention is to propose a kind of anodic protection shell-and-plate acid cooler.
The object of the invention is realized through following technical scheme: a kind of anodic protection shell-and-plate acid cooler, described acid cooler are provided with housing and in housing, have the heat exchanger plates bundle, and described heat exchanger plates bundle is made up of a plurality of cavity plate pipes of metal material; A plurality of cavity plate pipes of said heat exchanger plates bundle constitute the passage that cooling circulating water passes through; Described heat exchanger plates bundle and the shell side between the housing are the passage of high temperature sulfuric acid; Between said heat exchanger plates bundle and housing, the baffling circle is set, nearly sour import in the two ends that described baffling circle is positioned at the heat exchanger plates bundle and sour exit make the acid that gets in the housing evenly distribute at shell side, along the gap concurrent flow mistake between a plurality of cavity plate pipes of heat exchanger plates bundle; Described acid cooler is equipped with anode protection device; Potentiostat in the anode protection device is provided with anode, negative electrode, anode signal end, control ginseng electrode, prison ginseng electrode and instrument external tapping; Said anode links to each other with housing with the anode signal end; Said negative electrode through lead be arranged on that the cathode filament in the sour passage is connected described cathode filament and heat exchanger plates Shu Tongchang between plate bundle and the housing; Said control ginseng electrode is connected to sour import department, and prison ginseng electrode is connected to sour exit.
In sum: the present invention has following advantage: a kind of anodic protection shell-and-plate acid cooler, heat exchange unit are the plate bundle structure of full weldering.Its plate journey medium is a water, and the shell side medium is acid.At shell side main cathode is set, stainless steel plate is made anode, and control ginseng electrode, prison ginseng electrode are set, and the concentrated sulfuric acid is made conducting medium, forms anodic protection, thereby on plate, forms more stable passivating film.Simultaneously, the plate bundle is easy to extract out, and plate journey, shell side clean very convenient.Said acid cooler has plate type heat exchanger heat transfer efficiency height, compact conformation, lightweight advantage, simultaneously has shell-and-tube heat exchanger to hold high pressure and high temperature resistant again, good seal performance, safe and reliable, easy access and advantage such as cheap.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1, cathode filament, 2, cooling medium inlet, 3, the cooling medium outlet; 4, heat exchanger plates bundle, 5, the baffling circle, 6, sour import, 7, housing; 8, acid outlet, 9, potentiostat, 10, prison ginseng electrode, 11, control ginseng electrode; 12,, the anode signal end, 13, anode, 14, negative electrode, 15, end socket.
The specific embodiment
In conjunction with accompanying drawing and embodiment the present invention is explained.
As shown in Figure 1, a kind of anodic protection shell-and-plate acid cooler is provided with heat exchanger plates bundle 4 in the housing 7 of acid cooler, and described heat exchanger plates bundle 4 is formed by a plurality of cavity plate pipe assembly weldings; The cavity plate pipe of heat exchanger plates bundle 4 adopts stainless steel plate to be welded; Has the gap between a plurality of cavity plate pipes of said formation heat exchanger plates bundle 4; A plurality of cavity plate pipes of said heat exchanger plates bundle 4 have cooling medium inlet 2 and cooling medium outlet 3, constitute the passage of cooling circulating water; An outer end socket 15 of heat exchanger plates bundle 4 one ends and housing 7 connects together, and the other end links to each other with inner blind plate, and whole heat exchanger plates bundle 4 can wholely be extracted out in housing 7; The two ends of housing 7 are respectively arranged with sour import 6 and acid outlet 8, and the shell side between heat exchanger plates bundle 4 and the housing 7 is the passage of high temperature sulfuric acid; Between said heat exchanger plates bundle 4 and housing 7, baffling circle 5 is set; Nearly sour import 6 in the two ends that described baffling circle 5 is positioned at heat exchanger plates bundle 4 and acid outlet 8 places; The acid that gets in the housing 7 is evenly distributed, along the gap concurrent flow mistake between a plurality of cavity plate pipes of heat exchanger plates bundle 4 at shell side; Described acid cooler is equipped with anode protection device; Potentiostat 9 in the anode protection device is provided with anode 13, negative electrode 14, anode signal end 12, control ginseng electrode 11, prison ginseng electrode 10 and instrument external tapping; Said anode 13 links to each other with housing 7 with anode signal end 12; Negative electrode 14 links to each other with cathode filament 1 through lead, and cathode filament 1 is arranged in the sour passage between heat exchanger plates bundle 4 and the housing 7, and cathode filament 1 is long together with heat exchanger plates bundle 4.Cathode filament 1 adopts the fluorine plastic tube of 316L wire rod overcoat porous, according to the specification of equipment, considers the quantity of cathode filament.Said control ginseng electrode 11 is connected to sour import 6 places, and prison ginseng electrode 10 is connected to acid outlet 8 places.
Claims (1)
1. anodic protection shell-and-plate acid cooler, it is characterized in that: described acid cooler is provided with housing (7) and in housing, has heat exchanger plates bundle (4), and described heat exchanger plates bundle (4) is made up of a plurality of cavity plate pipes of metal material; A plurality of cavity plate pipes of said heat exchanger plates bundle (4) constitute the passage that cooling circulating water passes through; Described heat exchanger plates bundle (4) and the shell side between the housing (7) are the passage of high temperature sulfuric acid; Between said heat exchanger plates bundle (4) and housing (7), baffling circle (5) is set; Described baffling circle (5) is positioned at the nearly sour imports in two ends (6) and the acid outlet (8) of heat exchanger plates bundle (4) and locates; The acid that gets in the housing (7) is evenly distributed, along the gap concurrent flow mistake between a plurality of cavity plate pipes of heat exchanger plates bundle 4 at shell side; Described acid cooler is equipped with anode protection device; Potentiostat in the anode protection device (9) is provided with anode (13), negative electrode (14), anode signal end (12), control ginseng electrode (11), prison ginseng electrode (10) and instrument external tapping; Said anode (13) links to each other with housing (7) with anode signal end (12); Said negative electrode (14) through lead be arranged on that the cathode filament (1) in the sour passage is connected between heat exchanger plates bundle (4) and the housing (7), described cathode filament (1) and heat exchanger plates bundle (4) are with growing; Said control ginseng electrode (11) is connected to sour import (6) and locates, and prison ginseng electrode (10) is connected to acid outlet (8) and locates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104196991A CN102519280A (en) | 2011-12-15 | 2011-12-15 | Anode protection plate shell type acid cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104196991A CN102519280A (en) | 2011-12-15 | 2011-12-15 | Anode protection plate shell type acid cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102519280A true CN102519280A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104196991A Pending CN102519280A (en) | 2011-12-15 | 2011-12-15 | Anode protection plate shell type acid cooler |
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| CN (1) | CN102519280A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2210373Y (en) * | 1994-02-19 | 1995-10-18 | 吕志元 | Vortex flow plate type and plate-shell type heat exchanger with automatic scale removing function |
| CN2266603Y (en) * | 1996-08-13 | 1997-11-05 | 佛山市澜石传热设备厂 | Anodic protection plate type acid cooler |
| CN101949016A (en) * | 2010-11-03 | 2011-01-19 | 南京高源环保工程有限公司 | Anodic protection baffle rod type acid cooler |
| CN202382618U (en) * | 2011-12-15 | 2012-08-15 | 洛阳隆华传热科技股份有限公司 | Anodic-protection plate-and-shell acid cooler |
-
2011
- 2011-12-15 CN CN2011104196991A patent/CN102519280A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2210373Y (en) * | 1994-02-19 | 1995-10-18 | 吕志元 | Vortex flow plate type and plate-shell type heat exchanger with automatic scale removing function |
| CN2266603Y (en) * | 1996-08-13 | 1997-11-05 | 佛山市澜石传热设备厂 | Anodic protection plate type acid cooler |
| CN101949016A (en) * | 2010-11-03 | 2011-01-19 | 南京高源环保工程有限公司 | Anodic protection baffle rod type acid cooler |
| CN202382618U (en) * | 2011-12-15 | 2012-08-15 | 洛阳隆华传热科技股份有限公司 | Anodic-protection plate-and-shell acid cooler |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |