CN115365238B - Lime emulsion feeding pipeline cleaning process - Google Patents
Lime emulsion feeding pipeline cleaning process Download PDFInfo
- Publication number
- CN115365238B CN115365238B CN202211103860.9A CN202211103860A CN115365238B CN 115365238 B CN115365238 B CN 115365238B CN 202211103860 A CN202211103860 A CN 202211103860A CN 115365238 B CN115365238 B CN 115365238B
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- Prior art keywords
- dosing
- valve
- citric acid
- pipeline
- lime
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 70
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 70
- 239000004571 lime Substances 0.000 title claims abstract description 70
- 238000004140 cleaning Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 25
- 239000000839 emulsion Substances 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000008267 milk Substances 0.000 claims abstract description 31
- 210000004080 milk Anatomy 0.000 claims abstract description 31
- 235000013336 milk Nutrition 0.000 claims abstract description 31
- 238000011010 flushing procedure Methods 0.000 claims abstract description 29
- 239000003814 drug Substances 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000005406 washing Methods 0.000 claims abstract description 20
- 239000002253 acid Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 12
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 169
- 238000005554 pickling Methods 0.000 claims description 20
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 230000003211 malignant effect Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 231100001010 corrosive Toxicity 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to the technical field of industrial pipeline cleaning, in particular to a lime emulsion feeding pipeline cleaning process, which comprises the following steps: lime powder in the lime bin is conveyed to a dissolving tank through a conveyor to be stirred, and then conveyed to a medicine storage tank from the dissolving tank to be stirred, so that lime milk is formed, and the medicine storage tank is communicated with a total medicine adding valve; in the initial state, a dosing main valve is opened, a dosing valve A is opened, a dosing liquid outlet valve A is opened, all other valves are closed, a lime milk conveying pump A works, and lime milk is added through a dosing pipeline A; carrying out cyclic acid washing on the dosing pipeline A; acid washing and water flushing are started on the dosing pipeline B. The full-automatic cleaning device can dredge impurities in the pipeline, keep the pipeline smooth, repeatedly and circularly clean, pay attention to cleaning quality, improve the conveying efficiency of the pipeline, reduce energy consumption and material consumption, smoothly and continuously process flow, effectively operate equipment and avoid malignant accidents.
Description
Technical Field
The invention relates to the technical field of industrial pipeline cleaning, in particular to a lime emulsion feeding pipeline cleaning process.
Background
Under the physical and chemical actions of different temperatures, pressures and media, high-temperature polymers, coking, scale, oil scale, sediment, corrosives and the like are often generated in the pipeline in the industrial production field. The generation of the dirt obviously affects the benefit and the safety of the pipeline operation, so that the pipeline conveying efficiency is reduced, the energy consumption and the material consumption are increased, the process flow is interrupted, the equipment is invalid, and the serious accidents occur, so that the pipeline needs to be cleaned.
Disclosure of Invention
The invention aims to provide a lime emulsion feeding pipeline cleaning process, which aims to solve the problem that the pipeline is required to be cleaned and dredged due to the use in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a lime emulsion adding pipeline cleaning process comprises the following steps:
1) The flushing water tank is automatically filled with water, the citric acid dosing tank is provided with a citric acid water inlet valve and a citric acid emptying valve, a stirrer is arranged in the citric acid dosing tank, lime powder in the lime bin is conveyed to the dissolving tank through the conveyor to be stirred, and then is conveyed to the medicine storage tank from the dissolving tank to be stirred to form lime milk, and the medicine storage tank is communicated with the total dosing valve;
2) In an initial state, a dosing main valve is opened, a dosing valve A is opened, a dosing liquid outlet valve A is opened, all other valves are closed, a lime milk conveying pump A works, and lime milk is added through a dosing pipeline A;
3) After N days from the operation of the step 2), closing a dosing valve A and a dosing liquid outlet valve A, stopping the lime milk delivery pump A, opening a dosing valve B and a dosing liquid outlet valve B, starting the lime milk delivery pump B, switching a dosing pipeline B to dose lime milk, and simultaneously starting a citric acid water inlet valve of a citric acid dosing box and a stirrer in the citric acid dosing box, wherein the dosing liquid outlet valve A and the dosing liquid outlet valve B are communicated to a lime milk dosing branch pipe;
4) Manually feeding 4 bags of 25kg of citric acid powder into a citric acid dosing tank, closing a citric acid water inlet valve when the citric acid dosing tank reaches a high liquid level, simultaneously opening an acid washing total valve, an acid washing liquid outlet valve A and an acid washing reflux valve A, synchronously starting a citric acid dosing pump, and circularly washing the dosing pipeline A;
5) After 1 hour of cyclic pickling, the citric acid dosing pump and the pickling liquid outlet valve A are closed, the flushing water pump, the water pickling liquid outlet valve A and the citric acid emptying valve on the citric acid dosing tank are opened, the operation of flushing the dosing pipeline A is started, after 6 minutes, the flushing operation is stopped, and the flushing water pump, the water pickling liquid outlet valve A, the pickling reflux valve A and the citric acid emptying valve on the citric acid dosing tank are closed;
6) And switching to the dosing pipeline A to work after the dosing pipeline B works for M days, starting a cleaning system, and starting acid washing and water flushing on the dosing pipeline B.
As a further description of the above technical solution:
and the dissolving tank and the medicine storage tank are internally provided with a stirrer.
As a further description of the above technical solution:
the flushing water tank is provided with a floating ball automatic valve for automatic water supplementing.
As a further description of the above technical solution:
the citric acid water inlet valve and the citric acid emptying valve are electric valves.
As a further description of the above technical solution:
the N days are 3 to 15 days.
As a further description of the above technical solution:
the M days are 5 to 15 days.
Compared with the prior art, the invention provides a lime emulsion feeding pipeline cleaning process, which has the following beneficial effects:
1. according to the invention, the full-automatic cleaning can be performed, so that impurities in the pipeline can be dredged, and the pipeline is kept smooth;
2. in the invention, repeated and cyclic cleaning is carried out, the cleaning quality is focused, the conveying efficiency is improved, the energy consumption and material consumption is reduced, the process flow is smooth and uninterrupted, the equipment can effectively operate, and the occurrence of malignant accidents is avoided.
Drawings
FIG. 1 is a schematic diagram of the process flow of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
referring to fig. 1, the invention provides a lime emulsion feeding pipeline cleaning process, which comprises the following steps:
1) The flushing water tank is automatically filled with water, the citric acid dosing tank is provided with a citric acid water inlet valve and a citric acid emptying valve, a stirrer is arranged in the citric acid dosing tank, lime powder in the lime bin is conveyed to the dissolving tank through the conveyor to be stirred, and then is conveyed to the medicine storage tank from the dissolving tank to be stirred to form lime milk, and the medicine storage tank is communicated with the total dosing valve;
2) In an initial state, a dosing main valve is opened, a dosing valve A is opened, a dosing liquid outlet valve A is opened, all other valves are closed, a lime milk conveying pump A works, and lime milk is added through a dosing pipeline A;
3) After N days from the operation of the step 2), closing a dosing valve A and a dosing liquid outlet valve A, stopping the lime milk delivery pump A, opening a dosing valve B and a dosing liquid outlet valve B, starting the lime milk delivery pump B, switching a dosing pipeline B to dose lime milk, and simultaneously starting a citric acid water inlet valve of a citric acid dosing box and a stirrer in the citric acid dosing box, wherein the dosing liquid outlet valve A and the dosing liquid outlet valve B are communicated to a lime milk dosing branch pipe;
4) Manually feeding 4 bags of 25kg of citric acid powder into a citric acid dosing tank, closing a citric acid water inlet valve when the citric acid dosing tank reaches a high liquid level, simultaneously opening an acid washing total valve, an acid washing liquid outlet valve A and an acid washing reflux valve A, synchronously starting a citric acid dosing pump, and circularly washing the dosing pipeline A;
5) After 1 hour of cyclic pickling, the citric acid dosing pump and the pickling liquid outlet valve A are closed, the flushing water pump, the water pickling liquid outlet valve A and the citric acid emptying valve on the citric acid dosing tank are opened, the operation of flushing the dosing pipeline A is started, after 6 minutes, the flushing operation is stopped, and the flushing water pump, the water pickling liquid outlet valve A, the pickling reflux valve A and the citric acid emptying valve on the citric acid dosing tank are closed;
6) And switching to the dosing pipeline A to work after the dosing pipeline B works for M days, starting a cleaning system, and starting acid washing and water flushing on the dosing pipeline B.
Specifically, the dissolving tank and the medicine storage tank are internally provided with a stirrer.
Specifically, the flushing water tank is provided with a floating ball automatic valve for automatic water supplementing.
Specifically, the citric acid water inlet valve and the citric acid emptying valve are electric valves.
Specifically, N days are 3 to 15 days.
Specifically, M days are 5 to 15 days.
Working principle:
lime is sent into the silo through a feed pipe by compressed air carried by the transport vehicle; when the mixture of the powder and the compressed air enters the lime bin, the mixture is filtered by a dust remover at the top of the lime bin, the air is discharged, the powder shakes down into the lime bin, and an electric control cabinet is provided with a material level alarm function, so that an operator can grasp the material level condition;
the high material level and the low material level are displayed on an electric control cabinet panel and an alarm is given by a buzzer, an alarm signal is output to a central control room PLC, when the material level in a lime silo reaches the set low material level, a transport vehicle is informed to feed, a feed pipe is connected, an air pump of the transport vehicle is started, lime powder is pumped into the lime silo, a dust remover is started at the same time, when the material level in the lime silo reaches the set high material level, an audible and visual alarm is given, and the alarm signal is output to the central control room PLC, at the moment, the air pump of the transport vehicle is closed, the feed pipe is disconnected, and the transport vehicle is started; meanwhile, the top dust remover is closed (time is adjustable) after 5 minutes, when the material level in the lime bin silo reaches the set empty material level, an audible and visual alarm is given, and an alarm signal is output to a central control room PLC; if the lime powder is not replenished into the lime silo after a delay of 30 minutes, the PLC will shut down the whole system (time adjustable).
Lime powder stored in the silo is conveyed into a medicine dissolving tank by a vibrating hopper, an electric gate valve, a star discharger and a screw conveyor, a water inlet electric valve of the medicine dissolving tank and a built-in stirrer are simultaneously opened, lime powder dry powder is prepared into lime emulsion with a certain concentration, and the prepared lime emulsion overflows to a medicine storage tank to wait for a conveying pump to be added to a medicine adding point;
under normal working conditions, the delivery pump continuously pumps the emulsion from the medicine storage tank; when the liquid level in the medicine storage tank is at a set low position, the liquid level meter sends a signal to the PLC, the PLC sends an instruction to start the vibration hopper, the electric gate valve, the star discharger and the screw conveyor, meanwhile, a built-in stirrer of the medicine storage tank is started, a water inlet electric valve of the medicine storage tank is opened for water inlet, and the dispensing process is started; when the liquid level in the medicine storage tank gradually rises to a high position, the liquid level meter sends a signal to the PLC, the PLC sends an instruction to stop vibrating hopper, electric gate valve, star discharger and screw conveyor, simultaneously stops the work of the stirrer of the medicine storage tank, closes the water inlet electric valve to stop water inlet, and the dispensing process is stopped, and the working cycle is continued;
the flushing water tank is automatically filled with water, the citric acid dosing tank is provided with a citric acid water inlet valve and a citric acid emptying valve, a stirrer is arranged in the citric acid dosing tank, lime powder in the lime bin is conveyed to the dissolving tank through the conveyor to be stirred, and then is conveyed to the medicine storage tank from the dissolving tank to be stirred to form lime milk, and the medicine storage tank is communicated with the total dosing valve;
in the initial state, a dosing main valve is opened, a dosing valve A is opened, a dosing liquid outlet valve A is opened, all other valves are closed, a lime milk conveying pump A works, and lime milk is added through a dosing pipeline A;
after 3 to 15 days, closing a dosing valve A and a dosing liquid outlet valve A, stopping the lime milk delivery pump A, opening a dosing valve B and a dosing liquid outlet valve B, starting the lime milk delivery pump B, switching a dosing pipeline B to dose lime milk, and simultaneously starting a citric acid water inlet valve of a citric acid dosing tank and a stirrer in the citric acid dosing tank, wherein the dosing liquid outlet valve A and the dosing liquid outlet valve B are communicated to a lime milk dosing branch pipe;
manually feeding 4 bags of 25kg of citric acid powder into a citric acid dosing tank, closing a citric acid water inlet valve when the citric acid dosing tank reaches a high liquid level, simultaneously opening an acid washing total valve, an acid washing liquid outlet valve A and an acid washing reflux valve A, and synchronously starting a citric acid dosing pump to circularly acid-wash a dosing pipeline A;
after 1 hour of cyclic pickling, a citric acid dosing pump and a pickling liquid outlet valve A are closed, a flushing water pump, a water pickling liquid outlet valve A and a citric acid emptying valve on a citric acid dosing tank are opened, the operation of flushing the dosing pipeline A is started, after 6 minutes, the flushing operation is stopped, and the flushing water pump, the water pickling liquid outlet valve A, the pickling reflux valve A and the citric acid emptying valve on the citric acid dosing tank are closed, so that the cyclic flushing is one cycle of conveying and cleaning;
and switching to the dosing pipeline A to work after the dosing pipeline B works for 5 to 15 days, starting a cleaning system, and starting acid cleaning and water flushing on the dosing pipeline B.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The lime emulsion adding pipeline cleaning process is characterized by comprising the following steps of:
1) The flushing water tank is automatically filled with water, the citric acid dosing tank is provided with a citric acid water inlet valve and a citric acid emptying valve, a stirrer is arranged in the citric acid dosing tank, lime powder in the lime bin is conveyed to the dissolving tank through the conveyor to be stirred, and then is conveyed to the medicine storage tank from the dissolving tank to be stirred to form lime milk, and the medicine storage tank is communicated with the total dosing valve;
2) In an initial state, a dosing main valve is opened, a dosing valve A is opened, a dosing liquid outlet valve A is opened, all other valves are closed, a lime milk conveying pump A works, and lime milk is added through a dosing pipeline A;
3) After N days from the operation of the step 2), closing a dosing valve A and a dosing liquid outlet valve A, stopping the lime milk delivery pump A, opening a dosing valve B and a dosing liquid outlet valve B, starting the lime milk delivery pump B, switching a dosing pipeline B to dose lime milk, and simultaneously starting a citric acid water inlet valve of a citric acid dosing box and a stirrer in the citric acid dosing box, wherein the dosing liquid outlet valve A and the dosing liquid outlet valve B are communicated to a lime milk dosing branch pipe;
4) Manually feeding 4 bags of 25kg of citric acid powder into a citric acid dosing tank, closing a citric acid water inlet valve when the citric acid dosing tank reaches a high liquid level, simultaneously opening an acid washing total valve, an acid washing liquid outlet valve A and an acid washing reflux valve A, synchronously starting a citric acid dosing pump, and circularly washing the dosing pipeline A;
5) After 1 hour of cyclic pickling, the citric acid dosing pump and the pickling liquid outlet valve A are closed, the flushing water pump, the water pickling liquid outlet valve A and the citric acid emptying valve on the citric acid dosing tank are opened, the operation of flushing the dosing pipeline A is started, after 6 minutes, the flushing operation is stopped, and the flushing water pump, the water pickling liquid outlet valve A, the pickling reflux valve A and the citric acid emptying valve on the citric acid dosing tank are closed;
6) And switching to the dosing pipeline A to work after the dosing pipeline B works for M days, starting a cleaning system, and starting acid washing and water flushing on the dosing pipeline B.
2. The lime emulsion dosing pipeline cleaning process according to claim 1, wherein the process comprises the following steps: and the dissolving tank and the medicine storage tank are internally provided with a stirrer.
3. The lime emulsion dosing pipeline cleaning process according to claim 1, wherein the process comprises the following steps: the flushing water tank is provided with a floating ball automatic valve for automatic water supplementing.
4. The lime emulsion dosing pipeline cleaning process according to claim 1, wherein the process comprises the following steps: the citric acid water inlet valve and the citric acid emptying valve are electric valves.
5. The lime emulsion dosing pipeline cleaning process according to claim 1, wherein the process comprises the following steps: the N days are 3 to 15 days.
6. The lime emulsion dosing pipeline cleaning process according to claim 1, wherein the process comprises the following steps: the M days are 5 to 15 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211103860.9A CN115365238B (en) | 2022-09-09 | 2022-09-09 | Lime emulsion feeding pipeline cleaning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211103860.9A CN115365238B (en) | 2022-09-09 | 2022-09-09 | Lime emulsion feeding pipeline cleaning process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115365238A CN115365238A (en) | 2022-11-22 |
| CN115365238B true CN115365238B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211103860.9A Active CN115365238B (en) | 2022-09-09 | 2022-09-09 | Lime emulsion feeding pipeline cleaning process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204778997U (en) * | 2015-07-10 | 2015-11-18 | 上海华强环保设备工程有限公司 | Intelligence lime slurry throws feeder apparatus |
| CN111503521A (en) * | 2020-03-24 | 2020-08-07 | 大唐林州热电有限责任公司 | Lime milk conveying system with cleaning device and cleaning method thereof |
| KR102258357B1 (en) * | 2021-04-01 | 2021-05-28 | 창녕군시설관리공단 | Liquid slaked lime supply pump and pipe cleaning device for incineration facilities |
| CN114440135A (en) * | 2022-02-23 | 2022-05-06 | 深圳能源环保股份有限公司 | Lime slurry pipeline conveying system of waste incineration plant |
| CN114956285A (en) * | 2022-06-06 | 2022-08-30 | 华能(福建漳州)能源有限责任公司 | Lime milk pipeline system capable of being cleaned on line and use method thereof |
-
2022
- 2022-09-09 CN CN202211103860.9A patent/CN115365238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204778997U (en) * | 2015-07-10 | 2015-11-18 | 上海华强环保设备工程有限公司 | Intelligence lime slurry throws feeder apparatus |
| CN111503521A (en) * | 2020-03-24 | 2020-08-07 | 大唐林州热电有限责任公司 | Lime milk conveying system with cleaning device and cleaning method thereof |
| KR102258357B1 (en) * | 2021-04-01 | 2021-05-28 | 창녕군시설관리공단 | Liquid slaked lime supply pump and pipe cleaning device for incineration facilities |
| CN114440135A (en) * | 2022-02-23 | 2022-05-06 | 深圳能源环保股份有限公司 | Lime slurry pipeline conveying system of waste incineration plant |
| CN114956285A (en) * | 2022-06-06 | 2022-08-30 | 华能(福建漳州)能源有限责任公司 | Lime milk pipeline system capable of being cleaned on line and use method thereof |
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| Publication number | Publication date |
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| CN115365238A (en) | 2022-11-22 |
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