CN104259156B - Stoving oven supply lines automatic cleaning system and purging method - Google Patents
Stoving oven supply lines automatic cleaning system and purging method Download PDFInfo
- Publication number
- CN104259156B CN104259156B CN201410523348.9A CN201410523348A CN104259156B CN 104259156 B CN104259156 B CN 104259156B CN 201410523348 A CN201410523348 A CN 201410523348A CN 104259156 B CN104259156 B CN 104259156B
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- CN
- China
- Prior art keywords
- salted water
- stoving oven
- supply lines
- oven supply
- automatic cleaning
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
Abstract
The present invention relates to a kind of stoving oven supply lines automatic cleaning system and purging method, utilize existing stoving oven supply lines and set up de-salted water pipeline, by controlling the opening and closing of respective valves, form the circulation path of de-salted water, it is achieved the automatic cleaning of stoving oven supply lines. The invention has the beneficial effects as follows: when systematic failures stops, this stoving oven supply lines automatic cleaning system energy very first time starts, stoving oven supply lines can be made to reach good maintenance effects, and make pipeline-cleaning effect reach optimization by arranging de-salted water heating unit; While process problem, automatic wash procedure greatly reduces the operation of personnel in cleaning process, reduces pipeline equipment and damages, saves maintenance cost.
Description
Technical field
The present invention relates to steel rolling spent acid solution regeneration system rapidly technical field, it is specifically related to stoving oven supply lines automatic cleaning system and purging method.
Background technology
The spent acid solution that cold rolling mill pickled steel strip produces, has extremely strong corrodibility. If do not processed, environment will be caused serious pollution, simultaneously due to the discharge that hydrochloric acid is a large amount of, also result in the raising of pickling cost. Now for the process major part employing spray roasting technique of spent pickle liquor, and stoving oven system is one of core subsystem in spray roasting technique.
In spray roasting technique, first spent acid is pumped in Venturi preconcentrator by spent acid, fully mixes with the high-temperature roasting gas of the identical flow direction at aditus laryngis place, and a part of water and hydrochloric acid evaporation in spent acid solution form concentrating waste acid. Stoving oven charging pump is sprayed onto in stoving oven with certain pressure chemical reaction occurs by furnace roof acid rifle by through concentrated spent acid, produces free HCl and brown iron oxide.
But due to the easy crystallization of concentrating waste acid, easily deposit wall built-up; as run into the emergency situations such as the overall shutdown of acid purification system occur time; along with medium temperature in pipeline reduces; the crystalline polamer of concentrating waste acid in stoving oven supply lines often occurs; and once occur crystallization; this section of pipeline, by extremely difficult dredging, often causes conduit failure and needs to change. Even if operator are with utmost dispatch this stoving oven supply lines emptying, still lingering section concentrating waste acid crystallisate in pipeline, long-term accumulated needs finally causing line clogging to change.
It is therefore desirable to a kind of stoving oven supply lines automatic cleaning system of design and purging method, to overcome the problems referred to above.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that a kind of stoving oven supply lines automatic cleaning system and purging method, it is ensured that clean pipeline in the very first time.
The present invention is achieved in that
The present invention provides a kind of stoving oven supply lines automatic cleaning system, comprise stoving oven supply lines and de-salted water pipeline, described stoving oven supply lines comprises the main line being provided with stoving oven charging pump and some feed branch roads, and described de-salted water pipeline comprises the main line being provided with de-salted water supercharging device and de-salted water heating unit and some de-salted water branch roads; Every bar feed branch road is provided with a concentrating waste acid inlet valve and a stoving oven feed valve, and every bar feed branch road is connected with a de-salted water branch road between concentrating waste acid inlet valve with stoving oven feed valve, and every bar de-salted water branch road is provided with a de-salted water inlet valve; Being connected with drain line on stoving oven supply lines main line, described drain line is provided with tapping valve.
Further, described drain line is positioned at described stoving oven charging pump near the side of feed branch road.
Further, described drain line is positioned at the side of described stoving oven charging pump away from feed branch road, and described stoving oven charging pump comprises sour pump and the motor that pump impeller can reverse.
Further, described de-salted water heating unit is graphite heat exchanger, and described graphite heat exchanger is by high-temperature steam heat exchange.
Further, described de-salted water heating unit is electric heater.
Further, described de-salted water pipeline main line is also provided with a total valve of de-salted water.
Further, described drain line is cheated with passing to.
The present invention also provides a kind of method using this stoving oven supply lines automatic cleaning system to clean stoving oven supply lines, comprises the following steps:
S1: during acid purification system emergency shutdown, system closes stoving oven feed valve automatically, opens concentrating waste acid inlet valve, de-salted water inlet valve, tapping valve;
S2: starting de-salted water supercharging device and de-salted water heating unit, de-salted water enters de-salted water pipeline and heated;
S3: the de-salted water after heating successively flows through the main line of the main line of de-salted water pipeline, each de-salted water branch road, each feed branch road, stoving oven supply lines, discharges finally by drain line;
S4: wash procedure completes, by all valve closess, de-salted water supercharging device is shut down.
The present invention has following useful effect: when systematic failures stops every time, this stoving oven supply lines automatic cleaning system starts, automatically the operation of stoving oven supply lines is carried out cleaning, stoving oven supply lines can be made to reach good maintenance effects, and make pipeline-cleaning effect reach optimization by arranging de-salted water heating unit. While process problem, automatic wash procedure greatly reduces the operation of personnel in cleaning process, reduces pipeline equipment and damages, saves maintenance cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the stoving oven supply lines automatic cleaning system that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of protection of the invention.
Such as Fig. 1, the embodiment of the present invention provides a kind of stoving oven supply lines automatic cleaning system, comprise stoving oven supply lines 1 and de-salted water pipeline 2, described stoving oven supply lines 1 comprises the main line being provided with stoving oven charging pump 10 and some feed branch roads, and described de-salted water pipeline 2 comprises the main line being provided with de-salted water supercharging device 3 and de-salted water heating unit 4 and some de-salted water branch roads; Every bar feed branch road is provided with concentrating waste acid inlet valve 6 and a stoving oven feed valve 7, being connected with a de-salted water branch road between concentrating waste acid inlet valve 6 with stoving oven feed valve 7 on every bar feed branch road, every bar de-salted water branch road is provided with a de-salted water inlet valve 5; Being connected with drain line on stoving oven supply lines 1 main line, described drain line is provided with tapping valve 8. When stoving oven feed valve 7 close, other valves all open time, every bar feed branch road and the de-salted water branch road series connection being attached thereto, forms the passage branches that de-salted water circulates; After all passage branches parallel connections, its entrance is connected with the main line of de-salted water pipeline 2, and its outlet is connected with the main line of stoving oven supply lines 1, forms the circulation path of de-salted water.
In the present embodiment, when the pump impeller of described stoving oven charging pump 10 can not reverse, described drain line is positioned at the side of stoving oven charging pump 10 near feed branch road. When the sour pump that described stoving oven charging pump 10 can reverse for pump impeller, described drain line is positioned at the side of described stoving oven charging pump 10 away from feed branch road. After taking during a kind of structure, it is possible to stoving oven charging pump is together cleaned.
In the present embodiment, generally, the scene, acid regeneration station of steel rolling spent acid solution regeneration system rapidly can provide high-temperature steam, and at this moment, described de-salted water heating unit 4 is preferably graphite heat exchanger, and described graphite heat exchanger is by high-temperature steam heat exchange. Time bigger difficulty is existed for offer steam, it is possible to adopt the modes such as electric heater to be heated by de-salted water. Faster through the de-salted water of heating and the speed of response of crystallisate, it is possible to obtain better cleaning performance.
In the present embodiment, further, described de-salted water pipeline 2 main line is also provided with a total valve 9 of de-salted water, it is possible to better control the circulation of de-salted water in de-salted water pipeline 2.
In the present embodiment, described drain line is cheated with passing to.
The stoving oven supply lines automatic cleaning system using the present embodiment to provide cleans the method for stoving oven supply lines, comprises the following steps:
S1: during acid purification system emergency shutdown, system closes stoving oven feed valve 7 automatically, opens concentrating waste acid inlet valve 6, de-salted water inlet valve 5, tapping valve 8;
S2: starting de-salted water supercharging device 3 and de-salted water heating unit 4, de-salted water enters de-salted water pipeline 2 and heated;
S3: the de-salted water after heating successively flows through the main line of the main line of de-salted water pipeline 2, each de-salted water branch road, each feed branch road, stoving oven supply lines 1, discharges finally by drain line;
S4: wash procedure completes, by all valve closess, de-salted water supercharging device 3 is shut down.
During actual operation, when running into acid purification system emergency shutdown, remote auto control end immediate response, start dependent program and close and open above-mentioned respective valves to form the circulation path of de-salted water, and controlling de-salted water supercharging device 3 and de-salted water is processed by de-salted water heating unit 4 so that de-salted water can clean stoving oven supply lines preferably; When cleaning completes, remote auto control end closes all valves, it is achieved the controllability of scavenging period. Full process automatization controls, it is possible to carries out aforesaid operations in the very first time, effectively prevents the crystalline deposit of concentrating waste acid in stoving oven supply lines, reaches the effect safeguarding stoving oven supply lines preferably; Greatly reduce the operation of personnel in cleaning process simultaneously, reduce pipeline equipment and damage, save maintenance cost.
The foregoing is only the better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a stoving oven supply lines automatic cleaning system, comprise stoving oven supply lines (1) and de-salted water pipeline (2), described stoving oven supply lines (1) comprises the main line being provided with stoving oven charging pump (10) and some feed branch roads, and described de-salted water pipeline (2) comprises the main line being provided with de-salted water supercharging device (3) and de-salted water heating unit (4) and some de-salted water branch roads; Every bar feed branch road is provided with a concentrating waste acid inlet valve (6) and a stoving oven feed valve (7), being connected with a de-salted water branch road between concentrating waste acid inlet valve (6) with stoving oven feed valve (7) on every bar feed branch road, every bar de-salted water branch road is provided with a de-salted water inlet valve (5); Being connected with drain line on stoving oven supply lines (1) main line, described drain line is provided with tapping valve (8);
Described de-salted water pipeline (2) main line is also provided with the total valve of a de-salted water (9);
Described drain line is cheated with passing to.
2. stoving oven supply lines automatic cleaning system according to claim 1, it is characterised in that: described drain line is positioned at the side of described stoving oven charging pump (10) near feed branch road.
3. stoving oven supply lines automatic cleaning system according to claim 1, it is characterized in that: described drain line is positioned at the side of described stoving oven charging pump (10) away from feed branch road, and described stoving oven charging pump (10) comprises sour pump and the motor that pump impeller can reverse.
4. stoving oven supply lines automatic cleaning system according to claim 1, it is characterised in that: described de-salted water heating unit (4) is graphite heat exchanger, and described graphite heat exchanger is by high-temperature steam heat exchange.
5. stoving oven supply lines automatic cleaning system according to claim 1, it is characterised in that: described de-salted water heating unit (4) is electric heater.
6. use stoving oven supply lines automatic cleaning system as claimed in claim 1 to clean the method for stoving oven supply lines, comprise the following steps:
S1: during acid purification system emergency shutdown, system closes stoving oven feed valve (7) automatically, opens concentrating waste acid inlet valve (6), de-salted water inlet valve (5), tapping valve (8);
S2: starting de-salted water supercharging device (3) and de-salted water heating unit (4), de-salted water enters de-salted water pipeline (2) and heated;
S3: the de-salted water after heating successively flows through the main line of the main line of de-salted water pipeline (2), each de-salted water branch road, each feed branch road, stoving oven supply lines (1), discharges finally by drain line;
S4: wash procedure completes, by all valve closess, de-salted water supercharging device (3) is shut down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523348.9A CN104259156B (en) | 2014-10-08 | 2014-10-08 | Stoving oven supply lines automatic cleaning system and purging method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410523348.9A CN104259156B (en) | 2014-10-08 | 2014-10-08 | Stoving oven supply lines automatic cleaning system and purging method |
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| Publication Number | Publication Date |
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| CN104259156A CN104259156A (en) | 2015-01-07 |
| CN104259156B true CN104259156B (en) | 2016-06-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106310755B (en) * | 2016-08-15 | 2021-09-28 | 中冶南方工程技术有限公司 | Acid regeneration system, cleaning system, acid regeneration method and cleaning method thereof |
| CN113042481A (en) * | 2021-03-03 | 2021-06-29 | 广西柳州钢铁集团有限公司 | Method for on-line cleaning regular packing of absorption tower by hydrochloric acid regeneration system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1851320B (en) * | 2006-04-28 | 2010-05-12 | 中冶南方工程技术有限公司 | Hydrochloride waste regenerating process for spray roasting |
| CN101109088A (en) * | 2007-08-14 | 2008-01-23 | 邯郸钢铁股份有限公司 | Technique for cleaning acid dirty of acid reactivating machine group inner loop type pipeline |
| CN101126608A (en) * | 2007-09-30 | 2008-02-20 | 赫东波 | Calcining furnace feed pipe on-line cleaning device for preparing cobaltosic oxide |
| KR20130005388A (en) * | 2011-07-06 | 2013-01-16 | 나유집 | Cleaning method and cleaning apparatus |
| CN103663375B (en) * | 2012-08-30 | 2015-09-23 | 宝山钢铁股份有限公司 | The exempting from of a kind of preconcentrator nozzle disassembles online dredger and dredging method |
| CN103191594B (en) * | 2013-04-03 | 2015-02-25 | 马钢(集团)控股有限公司 | Acid scale removing device of filter press and acid scale removing process of filter press |
| CN204182641U (en) * | 2014-10-08 | 2015-03-04 | 中冶南方工程技术有限公司 | Roaster supply lines automatic cleaning system |
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