CN106148981A - A kind of device using chemical method to clean phosphoric acid pipeline scale - Google Patents
A kind of device using chemical method to clean phosphoric acid pipeline scale Download PDFInfo
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- CN106148981A CN106148981A CN201510131984.1A CN201510131984A CN106148981A CN 106148981 A CN106148981 A CN 106148981A CN 201510131984 A CN201510131984 A CN 201510131984A CN 106148981 A CN106148981 A CN 106148981A
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- Prior art keywords
- sulphuric acid
- thinning tank
- pipeline
- tank
- heat exchanger
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- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of device using chemical method to clean phosphoric acid pipeline scale, including sulphuric acid thinning tank, it is arranged over sulphuric acid holding vessel and water tank, sulphuric acid thinning tank is externally provided with inner cycle channel and outer circulation passage, circulating pump is installed on inner cycle channel, outer circulation passage uses pipeline to be sequentially connected with the discharging opening of sulphuric acid thinning tank, heat exchanger, delivery pump, pipeline to be cleaned, is eventually connected to the discharging opening of sulphuric acid thinning tank.The present invention uses hot sulfuric acid solution to carry out scale removal, so that potassium, sodium class phosphate and fluosilicate are rapidly dissolved in dilute sulfuric acid, reaches cleaning effect；And dilute sulfuric acid can carry out circulation repeatedly, cleaning effect is good, safety and environmental protection, and this apparatus structure is simple, reasonable in design, easy to use, is suitable for promoting.
Description
Technical field
The invention belongs to chemical mechanical equipment field, be specifically related to a kind of device using chemical method to clean phosphoric acid pipeline scale.
Background technology
At present, phosphorus chemical industry is the most, and the grade of phosphate rock resource is more and more lower.With low-grade phosphate ore stone produce scaling in process phosphoric acid, pipeline scale can be more serious, the method relying on labor cleaning is to can not meet far away production system to need all the time, phosphoric acid production device is perplexed by pipeline scale, badly influence the consecutive production of whole device, cause phosphoric acid can not meet the needs of whole phosphatic compound fertilizer device., in concrete operating process, there is certain risk factor, also can damage pipeline and equipment in the method using labor cleaning.
Summary of the invention
It is an object of the invention to for problem above, it is provided that a kind of device using chemical method to clean phosphoric acid pipeline scale, can effectively remove the dirt in pipeline by dilute sulfuric acid.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of device using chemical method to clean phosphoric acid pipeline scale, including sulphuric acid thinning tank, it is arranged over sulphuric acid holding vessel and water tank, sulphuric acid thinning tank is externally provided with inner cycle channel and outer circulation passage, being provided with circulating pump on inner cycle channel, outer circulation passage uses pipeline to be sequentially connected with the discharging opening of sulphuric acid thinning tank, heat exchanger, delivery pump, pipeline to be cleaned, is eventually connected to the discharging opening of sulphuric acid thinning tank.
Described heat exchanger is graphite heat exchanger, and heat transferring medium is low-pressure steam.By low-pressure steam, the dilute sulfuric acid in pipeline is heated indirectly, after making temperature reach 55-65 DEG C, can efficiently remove the dirt in pipeline to be cleaned.
It is additionally provided with agitating device inside described sulphuric acid thinning tank, it is possible to ensure that sulphuric acid can dilute uniformly, and the dilute sulfuric acid returned from outer circulation passage can also recycle after carrying out again mixing preparation.
The present invention uses said structure to design, first diluting concentrated sulfuric acid is become the dilute sulfuric acid of 5-8%, mixing preparation can be carried out by the agitating device within sulphuric acid thinning tank and inner cycle channel, stir, then the material stirred uses after heat exchanger heats delivery pump squeeze into pipeline to be cleaned carries out scale removal, finally it is recovered to sulphuric acid thinning tank, completes cleaning.The present invention uses hot sulfuric acid solution to carry out scale removal, so that potassium, sodium class phosphate and fluosilicate are rapidly dissolved in dilute sulfuric acid, reaches cleaning effect.And dilute sulfuric acid can carry out circulation repeatedly, cleaning effect is good, safety and environmental protection, and this apparatus structure is simple, reasonable in design, easy to use, is suitable for promoting.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention.
Detailed description of the invention
Further illustrate the present invention below in conjunction with embodiment, but the scope of protection of present invention is not limited to the scope of embodiment statement.
As shown in Figure 1, a kind of device using chemical method to clean phosphoric acid pipeline scale, including sulphuric acid thinning tank 1, it is arranged over sulphuric acid holding vessel 2 and water tank 3, sulphuric acid thinning tank 1 is externally provided with inner cycle channel 4 and outer circulation passage 5, being provided with circulating pump 41 on inner cycle channel 4, outer circulation passage 5 uses pipeline to be sequentially connected with the discharging opening 11 of sulphuric acid thinning tank 1, heat exchanger 51, delivery pump 52, pipeline to be cleaned 53, is eventually connected to the discharging opening 12 of sulphuric acid thinning tank 1.
Described heat exchanger 51 is graphite heat exchanger, and heat transferring medium is low-pressure steam.
Described sulphuric acid thinning tank 1 is internal is additionally provided with agitating device.
When using the present invention, sulphuric acid holding vessel 2 deposits the concentrated sulphuric acid that mass concentration is 98%, it is diluted in sulphuric acid thinning tank 1 dilute sulfuric acid of 5-8%, heat exchange is carried out again through graphite heat exchanger and low-pressure steam, temperature to dilution heat of sulfuric acid improves to 55-65 DEG C, by delivery pump dilution heat of sulfuric acid is driven in pipeline 53 to be cleaned and is carried out, iterative cycles, can reach quickly to go the effect of dirt.
Claims (1)
1. one kind uses the device that chemical method cleans phosphoric acid pipeline scale, it is characterized in that: include sulphuric acid thinning tank (1), it is arranged over sulphuric acid holding vessel (2) and water tank (3), sulphuric acid thinning tank (1) is externally provided with inner cycle channel (4) and outer circulation passage (5), circulating pump (41) is installed on inner cycle channel (4), outer circulation passage (5) uses pipeline to be sequentially connected with the discharging opening (11) of sulphuric acid thinning tank (1), heat exchanger (51), delivery pump (52), pipeline to be cleaned (53), it is eventually connected to the discharging opening (12) of sulphuric acid thinning tank (1)；Described heat exchanger (51) is graphite heat exchanger, and heat transferring medium is low-pressure steam；Described sulphuric acid thinning tank (1) is internal is additionally provided with agitating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131984.1A CN106148981A (en) | 2015-03-25 | 2015-03-25 | A kind of device using chemical method to clean phosphoric acid pipeline scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131984.1A CN106148981A (en) | 2015-03-25 | 2015-03-25 | A kind of device using chemical method to clean phosphoric acid pipeline scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106148981A true CN106148981A (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510131984.1A Pending CN106148981A (en) | 2015-03-25 | 2015-03-25 | A kind of device using chemical method to clean phosphoric acid pipeline scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106148981A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063987A (en) * | 2020-07-20 | 2020-12-11 | 江西江钨硬质合金有限公司 | Circulating water cooling system for PVD coating furnace and cleaning method thereof |
| CN113385492A (en) * | 2020-06-12 | 2021-09-14 | 湖北大峪口化工有限责任公司 | Cleaning method for phosphogypsum slag yard water return pipeline |
-
2015
- 2015-03-25 CN CN201510131984.1A patent/CN106148981A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113385492A (en) * | 2020-06-12 | 2021-09-14 | 湖北大峪口化工有限责任公司 | Cleaning method for phosphogypsum slag yard water return pipeline |
| CN112063987A (en) * | 2020-07-20 | 2020-12-11 | 江西江钨硬质合金有限公司 | Circulating water cooling system for PVD coating furnace and cleaning method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
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| WD01 | Invention patent application deemed withdrawn after publication |