CN210664122U - Cleaning device for mother liquid heat exchanger - Google Patents
Cleaning device for mother liquid heat exchanger Download PDFInfo
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- CN210664122U CN210664122U CN201921624544.XU CN201921624544U CN210664122U CN 210664122 U CN210664122 U CN 210664122U CN 201921624544 U CN201921624544 U CN 201921624544U CN 210664122 U CN210664122 U CN 210664122U
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- heat exchanger
- water inlet
- tube side
- mother liquor
- water outlet
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Abstract
The utility model provides a mother liquor heat exchanger cleaning device, which comprises a mother liquor heat exchanger unit and a heat exchanger, and also comprises a tube side cleaning pipeline and a shell side cleaning pipeline, wherein the tube side cleaning pipeline comprises a tube side water inlet and a tube side water outlet of the mother liquor heat exchanger unit, and a hot water tank A connected with the tube side water inlet and the tube side water outlet through pipelines; the shell pass cleaning pipeline comprises a shell pass water inlet and a shell pass water outlet of the mother liquor heat exchanger unit and a hot water tank B connected with the shell pass water inlet and the shell pass water outlet through pipelines, wherein a steam inlet pipe and a fresh water inlet pipe are arranged on the hot water tank A and the hot water tank B. The device provides a pipe/shell side cleaning pipeline for the mother liquor heat exchanger unit, solves the scab problem in the pipe/shell side of the mother liquor heat exchanger unit in a hot water circulation mode, and does not influence the joint alkali production and the repair progress. Simple structure is practical, and two pipelines wash mother liquor heat exchanger simultaneously and shorten the scavenging period, raises the efficiency.
Description
Technical Field
The utility model relates to a ally oneself with alkali production field, concretely relates to mother liquor heat exchanger belt cleaning device.
Background
Ca in the production of combined alkali for a long time2+、Mg2+With CaCO in the mother liquor system3、MgCO3The deposit of the form is attached to the inner walls of equipment and pipelines, so that the drift diameter of the pipelines is reduced, and the normal conveying capacity and cold recovery of mother liquor are influenced. The mother liquor conveying (circulating amount) is limited every year, and the system is forced to reduce the load or stop the production, so that the long-period stable operation of the production is restricted.
The existing alkali-associated mother liquor heat exchanger is only designed with an acid pickling process, but the acid pickling process is basically not used in the alkali-associated industry because waste acid is difficult to treat and the acid pickling effect is poor. In the production process, the tube pass and shell pass of the mother liquor heat exchanger are seriously scabbed, which affects the production, and the mother liquor heat exchanger can be dredged only by adopting a water jet during the shutdown maintenance period in the past, but the mode consumes a large amount of manpower and material resources.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a mother liquor heat exchanger belt cleaning device, the main content is as follows:
the device comprises a mother liquor heat exchanger unit, a heat exchanger, a tube side cleaning pipeline and a shell side cleaning pipeline, wherein the tube side cleaning pipeline comprises a tube side water inlet and a tube side water outlet of the mother liquor heat exchanger unit, and a hot water tank A connected with the tube side water inlet and the tube side water outlet through pipelines; the shell pass cleaning pipeline comprises a shell pass water inlet and a shell pass water outlet of the mother liquor heat exchanger unit and a hot water tank B connected with the shell pass water inlet and the shell pass water outlet through pipelines, wherein a steam inlet pipe and a fresh water inlet pipe are arranged on the hot water tank A and the hot water tank B.
Preferably, the water outlet of the hot water tank A is connected with a tube side water inlet of a first mother liquid heat exchanger in a mother liquid heat exchanger unit through a first circulating pump, the tube side water outlet of the first mother liquid heat exchanger is connected with a tube side water inlet of a second mother liquid heat exchanger, the tube side water outlet of the second mother liquid heat exchanger is connected with a tube side water inlet of a third mother liquid heat exchanger, the tube side water outlet of the third mother liquid heat exchanger is connected with a tube side water inlet of a fourth mother liquid heat exchanger, the tube side water outlet of the fourth mother liquid heat exchanger is connected with a heater water inlet, and the heater water outlet is connected with the hot water tank A.
Preferably, the water outlet of the hot water tank B is connected with a shell pass water inlet of a fourth mother liquid heat exchanger in the mother liquid heat exchanger unit through a second circulating pump, the shell pass water outlet of the fourth mother liquid heat exchanger is connected with a shell pass water inlet of a third mother liquid heat exchanger, the shell pass water outlet of the third mother liquid heat exchanger is connected with a shell pass water inlet of a second mother liquid heat exchanger, the shell pass water outlet of the second mother liquid heat exchanger is connected with a shell pass water inlet of the first mother liquid heat exchanger, and the shell pass water outlet of the first mother liquid heat exchanger is connected with the water inlet of the hot water tank B.
Preferably, the hot water tank A and the hot water tank B are both provided with sampling ports for collecting circulating water in the cleaning device.
Preferably, control valves are arranged in front of a tube side water inlet of the mother liquor heat exchanger unit and behind a water outlet of the heater, and control valves are also arranged in front of a shell side water inlet of the mother liquor heat exchanger unit and behind a shell side water outlet.
The utility model has the advantages that;
1. the device provides a pipe/shell side cleaning pipeline for the mother liquor heat exchanger unit, solves the scab problem in the pipe/shell side of the mother liquor heat exchanger unit in a hot water circulation mode, and can not influence the joint alkali production and the repair progress.
2. This device simple structure is practical, and two pipelines wash mother liquor heat exchanger simultaneously and shorten the scavenging period, raises the efficiency.
Drawings
FIG. 1 is a schematic diagram of a tube-side cleaning circuit;
FIG. 2 is a schematic view of a shell side cleaning circuit;
1. the system comprises a mother liquor heat exchanger unit, 101, a first mother liquor heat exchanger, 102, a second mother liquor heat exchanger, 103, a third mother liquor heat exchanger, 104, a fourth mother liquor heat exchanger, 2, a heat exchanger, 3, a tube side cleaning pipeline, 4, a shell side cleaning pipeline, 5, hot water tanks A and 6, hot water tanks B and 7, a first circulating pump, 8 and a second circulating pump.
Detailed Description
The invention will be further explained with reference to the following detailed description and embodiments in conjunction with the accompanying drawings:
as can be seen with reference to fig. 1-2, the apparatus comprises a mother liquor heat exchanger unit 1 and a heat exchanger 2, and further comprises a tube side cleaning pipeline 3 and a shell side cleaning pipeline 4, wherein the tube side cleaning pipeline 3 comprises a tube side water inlet and a tube side water outlet of the mother liquor heat exchanger unit 1, and a hot water tank a5 connected with the tube side water inlet and the tube side water outlet through a pipeline; the shell side cleaning pipeline 4 comprises a shell side water inlet and a shell side water outlet of the mother liquid heat exchanger unit 1 and a hot water tank B6 connected with the shell side water inlet and the shell side water outlet through pipelines, wherein a steam inlet pipe and a fresh water inlet pipe are arranged on the hot water tank A5 and the hot water tank B6.
In this embodiment, the water outlet of the hot water tank a5 is connected with the tube pass water inlet of the first mother liquor heat exchanger 101 in the mother liquor heat exchanger unit 1 through the first circulating pump 7, the tube pass water outlet of the first mother liquor heat exchanger 101 is connected with the tube pass water inlet of the second mother liquor heat exchanger 102, the tube pass water outlet of the second mother liquor heat exchanger 102 is connected with the tube pass water inlet of the third mother liquor heat exchanger 103, the tube pass water outlet of the third mother liquor heat exchanger 103 is connected with the tube pass water inlet of the fourth mother liquor heat exchanger 104, the tube pass water outlet of the fourth mother liquor heat exchanger 104 is connected with the heater water inlet, and the heater water outlet is connected with the hot water tank a 5.
In this embodiment, a water outlet of the hot water tank B6 is connected with a shell pass water inlet of a fourth mother liquid heat exchanger 104 in the mother liquid heat exchanger unit 1 through a second circulation pump 8, a shell pass water outlet of the fourth mother liquid heat exchanger 104 is connected with a shell pass water inlet of a third mother liquid heat exchanger 103, a shell pass water outlet of the third mother liquid heat exchanger 103 is connected with a shell pass water inlet of a second mother liquid heat exchanger 102, a shell pass water outlet of the second mother liquid heat exchanger 102 is connected with a shell pass water inlet of a first mother liquid heat exchanger 101, and a shell pass water outlet of the first mother liquid heat exchanger 101 is connected with a hot water tank B6 water inlet.
In this embodiment, the hot water tank a5 and the hot water tank B6 are both provided with sampling ports for collecting circulating water in the cleaning device.
In this embodiment, control valves are respectively disposed before a tube side water inlet of the mother liquor heat exchanger unit 1 and after a water outlet of the heater 2, and control valves are also respectively disposed before a shell side water inlet and after a shell side water outlet of the mother liquor heat exchanger unit 1.
When the mother liquor heat exchanger unit 1 needs cleaning, firstly, circulating water in a hot water tank A5 and a hot water tank B6 is heated by introducing steam through a steam inlet pipe, then a control valve of a pipe/shell side cleaning pipeline is opened, so that the heated circulating water enters a pipe/shell side water inlet of the mother liquor heat exchanger unit 1 to clean the pipeline, and the circulating water after cleaning the pipeline returns to the hot water tank A5 and the hot water tank B6 through a pipe/shell side water outlet respectively, so that the aim of cleaning the mother liquor heat exchanger unit 1 is achieved repeatedly in a circulating manner.
In addition, the T in the circulating water is sampled and detected from the sampling port every two hours in the cleaning processCL、FNH3、CNH3、CO2Content of when CO2If the content is more than 40tt or other indexes are more than 60tt, the water is required to be changed through a fresh water inlet, and the T in the washing water is analyzed continuously twiceCL、FNH3、CNH3、 CO2The content is not increased, and the cleaning of the mother liquor heat exchanger unit 1 is finished.
Claims (5)
1. The utility model provides a mother liquor heat exchanger belt cleaning device, includes mother liquor heat exchanger unit and heater, its characterized in that: the cleaning device also comprises a tube side cleaning pipeline and a shell side cleaning pipeline, wherein the tube side cleaning pipeline comprises a tube side water inlet and a tube side water outlet of the mother liquid heat exchanger unit, and a hot water tank A connected with the tube side water inlet and the tube side water outlet through pipelines; the shell pass cleaning pipeline comprises a shell pass water inlet and a shell pass water outlet of the mother liquor heat exchanger unit and a hot water tank B connected with the shell pass water inlet and the shell pass water outlet through pipelines, wherein a steam inlet pipe and a fresh water inlet pipe are arranged on the hot water tank A and the hot water tank B.
2. The mother liquor heat exchanger cleaning apparatus as claimed in claim 1, wherein: the hot water tank A is characterized in that a water outlet of the hot water tank A is connected with a tube side water inlet of a first mother liquid heat exchanger in a mother liquid heat exchanger unit through a first circulating pump, a tube side water outlet of the first mother liquid heat exchanger is connected with a tube side water inlet of a second mother liquid heat exchanger, a tube side water outlet of the second mother liquid heat exchanger is connected with a tube side water inlet of a third mother liquid heat exchanger, a tube side water outlet of the third mother liquid heat exchanger is connected with a tube side water inlet of a fourth mother liquid heat exchanger, a tube side water outlet of the fourth mother liquid heat exchanger is connected with a heater water inlet, and a heater water outlet is connected with the hot water tank A.
3. The mother liquor heat exchanger cleaning apparatus as claimed in claim 1, wherein: the water outlet of the hot water tank B is connected with a shell pass water inlet of a fourth mother liquid heat exchanger in the mother liquid heat exchanger unit through a second circulating pump, a shell pass water outlet of the fourth mother liquid heat exchanger is connected with a shell pass water inlet of a third mother liquid heat exchanger, a shell pass water outlet of the third mother liquid heat exchanger is connected with a shell pass water inlet of the second mother liquid heat exchanger, a shell pass water outlet of the second mother liquid heat exchanger is connected with a shell pass water inlet of the first mother liquid heat exchanger, and a shell pass water outlet of the first mother liquid heat exchanger is connected with a water inlet of the hot water tank B.
4. The mother liquor heat exchanger cleaning apparatus as claimed in any one of claims 1 to 3, wherein; and the hot water tank A and the hot water tank B are both provided with sampling ports for collecting circulating water in the cleaning device.
5. The mother liquor heat exchanger cleaning apparatus as claimed in any one of claims 1 to 3, wherein; control valves are arranged in front of a tube side water inlet of the mother liquor heat exchanger unit and behind a water outlet of the heater, and control valves are arranged in front of a shell side water inlet of the mother liquor heat exchanger unit and behind a shell side water outlet of the mother liquor heat exchanger unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921624544.XU CN210664122U (en) | 2019-09-27 | 2019-09-27 | Cleaning device for mother liquid heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921624544.XU CN210664122U (en) | 2019-09-27 | 2019-09-27 | Cleaning device for mother liquid heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210664122U true CN210664122U (en) | 2020-06-02 |
Family
ID=70811344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921624544.XU Active CN210664122U (en) | 2019-09-27 | 2019-09-27 | Cleaning device for mother liquid heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210664122U (en) |
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2019
- 2019-09-27 CN CN201921624544.XU patent/CN210664122U/en active Active
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