CN212128309U

CN212128309U - Pipeline alkali washing device convenient for acid washing system equipment

Info

Publication number: CN212128309U
Application number: CN201921912058.8U
Authority: CN
Inventors: 邹峰
Original assignee: Wuhan Hualipu Anticorrosion Engineering Co ltd
Current assignee: Wuhan Hualipu Anticorrosion Engineering Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-12-11
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a pipeline alkaline washing device convenient for acid washing system equipment, which comprises an acid tank, an alkaline washing tank and an acid tank, wherein a first pipeline, a second pipeline, a third pipeline and a fourth pipeline are communicated between the acid tank and the alkaline washing tank, a first connecting pipe is communicated between the first pipeline and the fourth pipeline, circulating pumps are respectively arranged on the two end parts of the first connecting pipe, the second connecting pipe and the third connecting pipe, the acid tank and the alkaline washing tank are respectively communicated with a liquid outlet pipe of the acid tank through a fifth pipeline and a sixth pipeline, the acid tank is communicated with the first connecting pipe through a liquid inlet pipe, valves and heat exchangers are respectively arranged on the fourth connecting pipe and the liquid inlet pipe, alkali liquor which is well proportioned from outside is injected into the alkaline washing tank, is heated through the heat exchanger on a production line, and is pumped into the acid tank through the original circulating pump for repeated washing, thereby achieving the purpose of clearing silica mud in the acid washing equipment and the pipeline, achieving the effect of chemical washing.

Description

Pipeline alkali washing device convenient for acid washing system equipment

Technical Field

The utility model relates to the technical field of chemistry, specifically be a pipeline alkali wash device convenient to pickling system equipment.

Background

The production quantity of the high-strength steel of the acid rolling production line is higher and higher, a large amount of deposition is easily formed in equipment and pipelines in an acid washing circulating system due to the fact that the strip steel contains a large amount of silicon elements, the pasty deposition is called as silicon sludge, and the silicon sludge is gradually hardened to form silicon scale. The existence and the deposition adsorbability of the silicon sludge seriously block acid washing equipment such as a jet beam, a graphite heater, a pipeline, a filter, an acid analyzer and the like, the flow of a system is influenced, the acid washing efficiency is reduced, the acid washing automatic procedure is unbalanced once, strip steel is not acid-washed, and the bottleneck restricting the acid washing effect and the smooth production of the acid rolling is formed.

The graphite heat exchanger and the pipelines nearby the graphite heat exchanger are most easily blocked in the acid circulating system, so that the heat exchange capacity and the circulation capacity of the system are influenced, the temperature and the flow of acid liquor cannot be matched with the normal speed, the pickling speed cannot be increased, the capacity of a unit is seriously restricted, and therefore the pipeline alkaline washing device convenient for pickling system equipment is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline alkali wash device convenient to pickling system device injects into the alkali wash jar with the good alkali lye of external ratio, heats through producing the heat exchanger on the line, squeezes into the acid vat the inside by original circulating pump again and washes repeatedly to reach the purpose of cleaing away the silicon mud in pickling installation and the pipeline, reach the effect that chemistry was washed, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a pipeline alkaline washing device convenient for acid washing system equipment comprises an acid tank, an alkaline washing tank and an acid tank, wherein a first pipeline, a second pipeline, a third pipeline and a fourth pipeline are communicated between the acid tank and the alkaline washing tank, valves are respectively arranged at two end parts of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline, a first connecting pipe is communicated between the first pipeline and the fourth pipeline, the second pipeline is communicated with the first connecting pipe through a second connecting pipe, the third pipeline is communicated with the first connecting pipe through a third connecting pipe, circulating pumps are respectively arranged at two end parts of the first connecting pipe, the second connecting pipe and the third connecting pipe, the acid tank and the alkaline washing tank are respectively communicated with a first liquid outlet pipe of the acid tank through a fifth pipeline and a sixth pipeline, valves are respectively arranged on the fifth pipeline and the sixth pipeline, the first liquid outlet pipe is communicated with the first connecting pipe through a fourth connecting pipe, the acid tank is communicated with the first connecting pipe through two groups of liquid inlet pipes, the fourth connecting pipe and the two groups of liquid inlet pipes are both provided with a valve and a heat exchanger, and the top of the alkaline washing tank is provided with a liquid adding pipe.

Preferably, the valve is a butterfly valve.

Preferably, the heat exchanger is a graphite heat exchanger.

Preferably, the feeding pipe is glued and connected with an elastic rubber gasket, and the feeding pipe is in threaded connection with a sealing cover.

Preferably, a connecting rope is arranged between the side wall of the sealing cover and the side wall of the liquid feeding pipe.

Preferably, the bottoms of the acid tank and the alkaline washing tank are communicated with the outside through second liquid outlet pipes, and valves are arranged on the two groups of second liquid outlet pipes.

Compared with the prior art, the beneficial effects of the utility model are that:

the alkali liquor with good external proportion is injected into the alkali washing tank, is heated through the heat exchanger on the production line, and is pumped into the acid tank by the original circulating pump to be repeatedly washed, so that the purpose of removing silicon sludge in the acid washing equipment and the pipeline is achieved, and the chemical washing effect is achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the sectional structure of the sealing cover of the present invention.

In the figure: 1. an acid tank; 2. an alkaline washing tank; 3. an acid tank; 4. a first conduit; 5. a second conduit; 6. a third pipeline; 7. a fourth conduit; 8. a valve; 9. a first connecting pipe; 10. a second connecting pipe; 11. a third connecting pipe; 12. a circulation pump; 13. a fifth pipeline; 14. a sixth pipeline; 15. a first liquid outlet pipe; 16. A fourth connecting pipe; 17. a liquid inlet pipe; 18. a heat exchanger; 19. a liquid feeding pipe; 20. an elastic rubber gasket; 21. a sealing cover; 22. connecting ropes; 23. a second liquid outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a pipeline alkaline washing device convenient for acid washing system equipment comprises an acid tank 1, an alkaline washing tank 2 and an acid tank 3, wherein the bottoms of the acid tank 1 and the alkaline washing tank 2 are communicated with the outside through second liquid outlet pipes 23, valves 8 are arranged on the two groups of second liquid outlet pipes 23, and the valves 8 are butterfly valves;

a first pipeline 4, a second pipeline 5, a third pipeline 6 and a fourth pipeline 7 are communicated between the acid tank 1 and the alkaline tank 2, valves 8 are respectively arranged at the two upper end parts of the first pipeline 4, the second pipeline 5, the third pipeline 6 and the fourth pipeline 7, a first connecting pipe 9 is communicated between the first pipeline 4 and the fourth pipeline 7, the second pipeline 5 is communicated with the first connecting pipe 9 through a second connecting pipe 10, the third pipeline 6 is communicated with the first connecting pipe 9 through a third connecting pipe 11, circulating pumps 12 are respectively arranged at the two end parts of the first connecting pipe 9, the second connecting pipe 10 and the third connecting pipe 11, and the start and stop of circulation are controlled through four groups of circulating pumps 12;

the acid tank 1 and the alkali tank 2 are respectively communicated with a first liquid outlet pipe 15 of the acid tank 3 through a fifth pipeline 13 and a sixth pipeline 14, valves 8 are respectively arranged on the fifth pipeline 13 and the sixth pipeline 14, the first liquid outlet pipe 15 is communicated with a first connecting pipe 9 through a fourth connecting pipe 16, the acid tank 3 is communicated with the first connecting pipe 9 through two groups of liquid inlet pipes 17, the valves 8 and a heat exchanger 18 are respectively arranged on the fourth connecting pipe 16 and the two groups of liquid inlet pipes 17, and the heat exchanger 18 is a graphite heat exchanger;

the top of the alkaline washing tank 2 is provided with a liquid feeding pipe 19, the liquid feeding pipe 19 is glued with an elastic rubber gasket 20, the liquid feeding pipe 19 is screwed with a sealing cover 21, the elastic rubber gasket 20 is arranged to enhance the connection tightness, and meanwhile, in order to fix the sealing cover 21, a connecting rope 22 is arranged between the side wall of the sealing cover 21 and the side wall of the liquid feeding pipe 19.

The working principle is as follows: emptying the acid solution in the acid tank 1, adding desalination water into the tank to reach 80% of liquid level, starting an acid circulation large circulation system, fully cleaning the acid tank 3, the pipelines and the residual acid solution in the acid tank 1, starting the large circulation for about 5min, stopping circulation to completely discharge the solution in the acid tank 1, and cleaning the residual acid solution in the system; continuously injecting desalted water into the acid tank 1 until 50 percent of desalted water is injected into the acid tank 1, and using a crown block to make 10 barrels have the volume of 1m³NaOH solution with the concentration of 30% is filled into the acid tank, then a liquid discharge valve of the alkaline tank 2 is opened, alkali liquor flows into the acid tank 1 through the acid tank 3 to be diluted with water, the diluted alkali liquor is prepared into NaOH solution with the concentration of about 10%, and the preparation of flushing solution is finished; starting the acid circulation small circulation system to heat the alkali liquor to 70 ℃, switching the large circulation to start washing the acid washing circulation system, wherein the planned washing time is 4 hours, monitoring the injection pressure during the planned washing time, taking the pressure of an injection beam reaching a set value of 0.3Mpa as a node for stopping the alkali washing, enabling the solution after the alkali washing to flow back to the acid tank 1, and emptying the alkali liquor in the acid tank 1; adding desalted water into the acid tank 1 again to reach 70% of the liquid level, starting a small cycle, heating to 60 ℃, switching a large cycle to clean the residual alkali liquor in the circulating system, planning the cleaning time to be 5min, repeatedly washing the link twice, and completing the cleaning of the system pipeline; and finally, emptying the solution in the acid tank 1, and arranging personnel to open the acid tank 3, the acid tank 1, the heat exchanger 18, each pipeline and the filter to check whether residual massive silicon sludge exists or not, and cleaning in time.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pipeline alkali wash device convenient to pickling system device, includes acid tank (1), alkali wash jar (2) and acid vat (3), its characterized in that: the acid cleaning device is characterized in that a first pipeline (4), a second pipeline (5), a third pipeline (6) and a fourth pipeline (7) are communicated between the acid cleaning tank (1) and the alkaline cleaning tank (2), valves (8) are respectively installed at two end parts of the first pipeline (4), the second pipeline (5), the third pipeline (6) and the fourth pipeline (7), a first connecting pipe (9) is communicated between the first pipeline (4) and the fourth pipeline (7), the second pipeline (5) is communicated with the first connecting pipe (9) through a second connecting pipe (10), the third pipeline (6) is communicated with the first connecting pipe (9) through a third connecting pipe (11), circulating pumps (12) are respectively installed at two end parts of the first connecting pipe (9), the second connecting pipe (10) and the third connecting pipe (11), and the acid cleaning tank (1) and the alkaline cleaning tank (2) are respectively communicated through a fifth pipeline (13), Sixth pipeline (14) and first drain pipe (15) intercommunication of acid tank (3), all install valve (8) on fifth pipeline (13) and sixth pipeline (14), first drain pipe (15) are through fourth connecting pipe (16) and first connecting pipe (9) intercommunication, acid tank (3) are through two sets of feed liquor pipes (17) and first connecting pipe (9) intercommunication, all install valve (8) and heat exchanger (18) on fourth connecting pipe (16) and two sets of feed liquor pipes (17), alkali wash tank (2) top is provided with liquid feeding pipe (19).

2. The pipeline alkaline washing device convenient for the pickling system equipment as recited in claim 1, wherein: the valve (8) is a butterfly valve.

3. The pipeline alkaline washing device convenient for the pickling system equipment as recited in claim 1, wherein: the heat exchanger (18) is a graphite heat exchanger.

4. The pipeline alkaline washing device convenient for the pickling system equipment as recited in claim 1, wherein: the rubber-covered liquid feeding device is characterized in that an elastic rubber gasket (20) is glued on the liquid feeding pipe (19), and a sealing cover (21) is in threaded connection with the liquid feeding pipe (19).

5. The pipeline alkaline washing device convenient for the pickling system equipment as recited in claim 4, wherein: and a connecting rope (22) is arranged between the side wall of the sealing cover (21) and the side wall of the liquid feeding pipe (19).

6. The pipeline alkaline washing device convenient for the pickling system equipment as recited in claim 1, wherein: the bottoms of the acid tank (1) and the alkaline washing tank (2) are communicated with the outside through second liquid outlet pipes (23), and valves (8) are arranged on the two groups of second liquid outlet pipes (23).