CN211537590U - Mixed liquid preparation system - Google Patents
Mixed liquid preparation system Download PDFInfo
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- CN211537590U CN211537590U CN201922170924.7U CN201922170924U CN211537590U CN 211537590 U CN211537590 U CN 211537590U CN 201922170924 U CN201922170924 U CN 201922170924U CN 211537590 U CN211537590 U CN 211537590U
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Abstract
A mixed liquid preparation system comprises a liquid preparation kettle, wherein a liquid outlet is formed in the bottom of the liquid preparation kettle, a feeding pipe is arranged in the liquid preparation kettle, the feeding pipe is connected with a feeding valve inlet through a pipeline, a feeding valve inlet is connected with a second-stage mixer outlet through a pipeline, a second-stage mixer inlet is connected with a first-stage mixer outlet through a pipeline, a first-stage mixer inlet is connected with a circulating pump outlet through a pipeline, and a circulating pump inlet is connected with the liquid outlet in the bottom of the liquid preparation kettle through a pipeline; the inlet of the first-stage mixer is respectively communicated with the heavy aromatic hydrocarbon feeding device and the trioctyl phosphate feeding device; and the inlet of the second-stage mixer is respectively communicated with the pure water feeding device and the liquid caustic soda feeding device. The system can uniformly mix all components in a short time, and greatly shortens the preparation time of the working solution.
Description
Technical Field
The utility model belongs to the technical field of the liquid is joined in marriage in the mixture, in particular to liquid system is joined in marriage in mixture.
Background
The preparation process of the existing hydrogen peroxide device mainly comprises the steps of preparing fresh working solution and cleaning old working solution, wherein the main components of the working solution comprise anthraquinone, trioctyl phosphate and heavy aromatic hydrocarbon (trimethylbenzene or tetramethylbenzene), wherein the anthraquinone is solid, the trioctyl phosphate and the heavy aromatic hydrocarbon are liquid, and pure water, liquid caustic soda and the like are required to be used in the preparation and cleaning processes of the working solution. In traditional preparation and cleaning process, solid anthraquinone generally throws the material from cauldron top manhole, and in liquid material directly carried to the cauldron through the pipeline, with each material misce bene through the stirring rake, it needs 4~5h to prepare the fresh working solution of single cauldron, washs the old working solution of single cauldron and also needs 3~4h, and most of valves also adopt the manual work to carry out the switch. Particularly, a large amount of working solution needs to be prepared before a newly built hydrogen peroxide device operates, for example, a 15-ten-thousand-ton/year device needs to prepare 1200-1500 m3 of new working solution before the device operates, the liquid preparation amount of a single kettle is calculated according to 10m3, the working solution can be prepared and completed by adopting double kettles for 24h continuous operation and 10-15 days, and the labor intensity of field operators is directly high due to long period.
The liquid preparation mode is commonly used at present for mixing multiple components by adopting a preparation kettle, materials are mixed by adopting stirring paddles, different stirring paddle forms can be selected according to the properties of the materials, but the traditional mode of only depending on stirring and mixing is difficult to mix the materials very uniformly or needs quite long stirring and mixing time, so that the production period of a single kettle is longer, the energy consumption in the stirring period is higher, and the productivity is not improved.
Disclosure of Invention
In view of the technical problem that the background art exists, the utility model provides a liquid system is joined in marriage in mixture can make each component misce bene in the short term, shortens working solution preparation time greatly.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a mixed liquid preparation system comprises a liquid preparation kettle, wherein a liquid outlet is formed in the bottom of the liquid preparation kettle, a feeding pipe is arranged in the liquid preparation kettle, the feeding pipe is connected with a feeding valve inlet through a pipeline, a feeding valve inlet is connected with a second-stage mixer outlet through a pipeline, a second-stage mixer inlet is connected with a first-stage mixer outlet through a pipeline, a first-stage mixer inlet is connected with a circulating pump outlet through a pipeline, and a circulating pump inlet is connected with the liquid outlet in the bottom of the liquid preparation kettle through a pipeline; the inlet of the first-stage mixer is respectively communicated with the heavy aromatic hydrocarbon feeding device and the trioctyl phosphate feeding device; and the inlet of the second-stage mixer is respectively communicated with the pure water feeding device and the liquid caustic soda feeding device.
In a preferred scheme, the heavy aromatic hydrocarbon feeding device comprises a heavy aromatic hydrocarbon feeding valve, an outlet of the heavy aromatic hydrocarbon feeding valve is communicated with an inlet of the first-stage mixer through a pipeline, an inlet of the heavy aromatic hydrocarbon feeding valve is used for pumping heavy aromatic hydrocarbon, and a heavy aromatic hydrocarbon flowmeter is arranged at an inlet of the heavy aromatic hydrocarbon feeding valve.
In a preferable scheme, the trioctyl phosphate feeding device comprises a trioctyl phosphate feeding valve, an outlet of the trioctyl phosphate feeding valve is communicated with an inlet of the primary mixer through a pipeline, an inlet of the trioctyl phosphate feeding valve is used for pumping trioctyl phosphate, and a trioctyl phosphate flow meter is arranged at the inlet of the trioctyl phosphate feeding valve.
In the preferred scheme, the pure water feeding device comprises a pure water feeding valve, an outlet of the pure water feeding valve is communicated with an inlet of the second-stage mixer through a pipeline, an inlet of the pure water feeding valve is used for pumping pure water, and a pure water flowmeter is arranged at the inlet of the pure water feeding valve.
In a preferable scheme, the liquid caustic soda feeding device comprises a liquid caustic soda feeding valve, an outlet of the liquid caustic soda feeding valve is communicated with an inlet of the second-stage mixer through a pipeline, an inlet of the liquid caustic soda feeding valve is used for pumping pure water, and a liquid caustic soda flow meter is arranged at the inlet of the liquid caustic soda feeding valve.
In the preferred scheme, the feeding pipe is a feeding ring pipe, and a plurality of discharging holes are formed in the feeding ring pipe.
In a preferred scheme, the inlet and the outlet of the circulating pump are respectively provided with a circulating material inlet valve and a circulating material outlet valve.
In the preferred scheme, a stirring paddle is arranged in the liquid preparation kettle and is driven to rotate by a stirring motor, and the stirring motor is arranged at the top of the liquid preparation kettle.
In a preferable scheme, the output end of the circulating material outlet valve is connected with a material returning valve through a pipeline.
This patent can reach following beneficial effect:
1. the two-stage pipeline mixer can realize that a plurality of liquid materials enter the liquid preparation kettle after being rapidly and uniformly mixed.
2. The arrangement of the feeding ring pipe with the opening in the liquid preparation kettle ensures that the mixed liquid material is more fully contacted with the solid material input from the manhole after being sprayed out from the opening, and the dissolving time can be greatly shortened; compared with the traditional process, the liquid preparation time is saved.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a system connection diagram of the present invention;
in the figure: the system comprises a liquid preparation kettle 1, a feed valve 2, a stirring paddle 3, a feed ring pipe 4, a solid anthraquinone feeding hole 5, a secondary mixer 6, a liquid caustic soda feed valve 7, a liquid caustic soda flow meter 8, a pure water feed valve 9, a pure water flow meter 10, a primary mixer 11, a trioctyl phosphate feed valve 12, a trioctyl phosphate flow meter 13, a heavy aromatic hydrocarbon feed valve 14, a heavy aromatic hydrocarbon flow meter 15, a return valve 16, a circulating material outlet valve 17, a circulating pump 18, a circulating material inlet valve 19 and an automatic control system 20.
Detailed Description
A preferable scheme is as shown in fig. 1, a mixed liquid preparation system comprises a liquid preparation kettle 1, wherein a liquid outlet is arranged at the bottom of the liquid preparation kettle 1, a feeding pipe is arranged in the liquid preparation kettle 1, the feeding pipe is connected with an inlet of a feeding valve 2 through a pipeline, an inlet of the feeding valve 2 is connected with an outlet of a second-stage mixer 6 through a pipeline, an inlet of the second-stage mixer 6 is connected with an outlet of a first-stage mixer 11 through a pipeline, an inlet of the first-stage mixer 11 is connected with an outlet of a circulating pump 18 through a pipeline, and an inlet of the circulating pump 18 is connected with the liquid outlet; an inlet of the first-stage mixer 11 is respectively communicated with a heavy aromatic hydrocarbon feeding device and a trioctyl phosphate feeding device; the inlet of the second-stage mixer 6 is respectively communicated with a pure water feeding device and a liquid caustic soda feeding device.
The number of the mixers is 2, namely a secondary mixer 6 and a primary mixer 11, and the models are the same: SV-5/80-500 (SV is a type of mixer, and is a cylinder assembled by corrugated plates with certain specifications, and has nominal diameter DN =80mm, hydraulic diameter dh =5mm, length 500mm, and fluid flow range of 9-18 m3/h）。
The mark 5 is a solid feeding port (manhole), solid anthraquinone (2-ethyl anthraquinone) is added in the scheme, and the feeding port is closed after the feeding is finished.
Further, the heavy aromatics feeding device comprises a heavy aromatics feeding valve 14, an outlet of the heavy aromatics feeding valve 14 is communicated with an inlet of the first-stage mixer 11 through a pipeline, an inlet of the heavy aromatics feeding valve 14 is used for pumping heavy aromatics, and a heavy aromatics flow meter 15 is arranged at an inlet of the heavy aromatics feeding valve 14.
Further, the trioctyl phosphate feeding device comprises a trioctyl phosphate feeding valve 12, an outlet of the trioctyl phosphate feeding valve 12 is communicated with an inlet of the primary mixer 11 through a pipeline, an inlet of the trioctyl phosphate feeding valve 12 is used for pumping trioctyl phosphate, and a trioctyl phosphate flow meter 13 is arranged at an inlet of the trioctyl phosphate feeding valve 12.
Further, the pure water feeding device comprises a pure water feeding valve 9, an outlet of the pure water feeding valve 9 is communicated with an inlet of the second-stage mixer 6 through a pipeline, an inlet of the pure water feeding valve 9 is used for pumping pure water, and a pure water flowmeter 10 is arranged at an inlet of the pure water feeding valve 9.
Further, liquid caustic soda feed arrangement includes liquid caustic soda feed valve 7, and the export of liquid caustic soda feed valve 7 passes through the pipeline intercommunication with the entry of second grade blender 6, and 7 entrances of liquid caustic soda feed valve are used for the pump sending pure water, and 7 entrances of liquid caustic soda feed valve are equipped with liquid caustic soda flowmeter 8.
When preparing fresh working solution, the materials in the solution preparation kettle 1 enter the circulating pump 18 through the circulating material inlet valve 19, and return to the solution preparation kettle 1 through the circulating material outlet valve 17, the first-stage mixer 11, the second-stage mixer 6 and the feed valve 2 for circulating mixing. Quantitatively adding heavy aromatics into the system through a heavy aromatics flow meter 15 and a heavy aromatics feed valve 14; the trioctyl phosphate is quantitatively added into the system through a trioctyl phosphate flowmeter 13 and a trioctyl phosphate feed valve 12, and can be uniformly mixed with working solution components such as heavy aromatics and the like in a first-stage mixer 11; pure water is quantitatively added into the system through a pure water flowmeter 10 and a pure water feeding valve 9, and liquid caustic soda is quantitatively added into the system through a liquid caustic soda flowmeter 8 and an alkaline liquor feeding valve 7; the pure water or the liquid caustic soda and the working liquid components can be uniformly mixed in the second-stage mixer 6.
Furthermore, the feeding pipe is a feeding ring pipe 4, and a plurality of discharging holes are arranged on the feeding ring pipe 4.
Further, the inlet and outlet of the circulation pump 18 are provided with a circulation material inlet valve 19 and a circulation material outlet valve 17, respectively.
Further, be equipped with stirring rake 3 in joining in marriage liquid cauldron 1, stirring rake 3 passes through agitator motor drive and rotates, and agitator motor sets up at joining in marriage liquid cauldron 1 top.
Further, the output end of the circulating material outlet valve 17 is connected with the material returning valve 16 through a pipeline.
When old working solution is cleaned, the working solution of the production device is pushed into the solution preparation kettle 1 through the material returning valve 16, components can be supplemented to the old working solution through the heavy aromatic hydrocarbon feed valve 14 and the trioctyl phosphate feed valve 12 in the cleaning process, and the old working solution is cleaned by adding alkali and water through the liquid alkali feed valve 7 and the pure water feed valve 9. All the liquid materials can be automatically fed after data setting is carried out by the automatic control system 20.
A flow meter: 4 material flow meters, namely a liquid caustic soda flow meter 8, a pure water flow meter 10, a trioctyl phosphate flow meter 13 and a heavy aromatic hydrocarbon flow meter 15, the selection forms of the material flow meters are many, the scheme selects a turbine flow meter, the model is selected from LWY-40 (or 50) -B, the pipe diameter DN =40 or 50mm is represented, B represents explosion-proof (belonging to organic application occasions), and the metering range of the model flow meter is as follows:DN40 is 1-20 m3The DN50 is 2-40 m3H is used as the reference value. The flowmeter can display flow data through a display screen of the flowmeter on site for a site operator to check, and the data is synchronously transmitted to a control room computer DCS display interface for an indoor operator to check.
The automatic control system 20 is a DCS control system and mainly controls the addition of 4 materials (a material feeding valve 2 is opened, and the material feeding valve 2 is closed after the flow is controlled to a set flow), and comprises liquid caustic soda (a liquid caustic soda feeding valve 7 and a liquid caustic soda flow meter 8), pure water (a pure water feeding valve 9 and a pure water flow meter 10), trioctyl phosphate (a trioctyl phosphate feeding valve 12 and a trioctyl phosphate flow meter 13), heavy aromatic hydrocarbon (a heavy aromatic hydrocarbon feeding valve 14 and a heavy aromatic hydrocarbon flow meter 15) and a material returning valve 16 (16 is opened during cleaning and material returning to return the device to a liquid preparation kettle, and 16 is in a closed state during preparation of fresh working liquid). The automatic control system displays the data of the required quantity of each material, the data of the flow meter, the opening and closing state of the automatic control valve, the volume of the prepared liquid and the like on a liquid preparation interface of a computer DCS (distributed control System) in a control room in a centralized manner, and can set and control the liquid preparation amount, the state of the automatic control valve and the time through the DCS. For example, inputting the amount of prepared fresh working fluid (10 m) on the DCS liquid preparation interface3) The automatic control system can automatically display the material anthraquinone addition of 1.40 t/heavy aromatic hydrocarbon addition of 6.51m through internal logic calculation3Trioctyl phosphate addition 2.17m3188L of liquid caustic soda/5 m of pure water3。
The utility model discloses a premixing of liquid material has just been realized to the raw materials before getting into to join in marriage liquid cauldron 1 to the jet-flow that joins in marriage 1 inside increase trompil ring canal 4 of liquid cauldron realizes that liquid is solid to dissolve fast, therefore can shorten and join in marriage liquid material mixing time.
The working principle of the whole system is introduced by specific data as follows:
for example, it is necessary to prepare 10m3Working fluid:
1.40t of solid material anthraquinone (manual hoisting is carried out from a manhole of a liquid preparation kettle, and the completion is carried out within 30-50 min), 6.51m3 (completion is carried out within 40-45 min) of heavy aromatic hydrocarbon of liquid material/2.17 m3 (completion is carried out within 40-45 min)/188L of liquid alkali (concentration is 31%) (average addition is carried out for 5 times, and completion is carried out within 15-20 min)/5 m3 of pure water (average addition is carried out for 5 times, and completion is carried out within 15-20 min).
Material adding sequence and equipment running state:
firstly, liquid preparation: the material returning valve 16 is in a closed state, the feeding valve 2 is opened, heavy aromatic hydrocarbon and trioctyl phosphate are simultaneously fed through the primary mixer 11 (the heavy aromatic hydrocarbon feeding valve 14 is automatically started, flow accumulated data are fed back to the automatic control system 20 through the heavy aromatic hydrocarbon flow meter 15 to control the opening and closing state of the heavy aromatic hydrocarbon feeding valve 14, the trioctyl phosphate material valve state is similar to that of the heavy aromatic hydrocarbon), the circulating pump 18 is started after the circulating material inlet valve 19 is opened, the circulating material outlet valve 17 is opened, materials in the liquid preparation kettle 1 are mixed by internal jet flow and forced mixing of an external circulating pipeline mixer, and solid anthraquinone feeding is completed (completed in 45 min).
Alkali washing and water washing: automatically starting a liquid caustic soda flow meter 8 and a caustic soda feed valve 7, adding caustic soda for the first time through a secondary mixer 6 to be used for alkali washing working solution, continuously mixing for 5min after adding the caustic soda, stopping stirring paddles 3 and a circulating pump 18, standing the working solution to realize oil-water separation, and discharging bottom water phase caustic soda and impurities through a drain valve (the drain valve is positioned on a pipeline between a circulating material inlet valve 19 and the circulating pump 18, and is not shown in the attached drawing); and starting a circulating pump 18, a pure water flowmeter 10 and a pure water feeding valve 9, adding water for washing the alkaline working solution for the first time through a secondary mixer 6, continuously mixing for 5min after washing, performing the subsequent operation similar to alkaline washing, and performing 4 times of cross alkaline washing-water washing according to the steps (finishing 50 min). The complete completion time of the liquid preparation step and the alkali washing and water washing step can be controlled within 2 h.
Claims (9)
1. The utility model provides a mix and join in marriage liquid system, is equipped with the liquid outlet including joining in marriage liquid cauldron (1) bottom, joins in marriage and is provided with the inlet pipe in liquid cauldron (1), and the inlet pipe passes through pipe connection, its characterized in that with feed valve (2) entry: an inlet of the feed valve (2) is connected with an outlet of the second-stage mixer (6) through a pipeline, an inlet of the second-stage mixer (6) is connected with an outlet of the first-stage mixer (11) through a pipeline, an inlet of the first-stage mixer (11) is connected with an outlet of the circulating pump (18) through a pipeline, and an inlet of the circulating pump (18) is connected with a liquid outlet at the bottom of the liquid preparation kettle (1) through a pipeline; the inlet of the first-stage mixer (11) is respectively communicated with a heavy aromatic hydrocarbon feeding device and a trioctyl phosphate feeding device; the inlet of the second-stage mixer (6) is respectively communicated with the pure water feeding device and the liquid caustic soda feeding device.
2. The mixed liquid dispensing system of claim 1, wherein: heavy aromatics feed arrangement includes heavy aromatics feed valve (14), and pipeline intercommunication is passed through with one-level blender (11) entry to heavy aromatics feed valve (14) export, and heavy aromatics feed valve (14) entry is used for the pump to send heavy aromatics, and is equipped with heavy aromatics flowmeter (15) at heavy aromatics feed valve (14) entry.
3. The mixed liquid dispensing system of claim 1, wherein: the trioctyl phosphate feeding device comprises a trioctyl phosphate feeding valve (12), an outlet of the trioctyl phosphate feeding valve (12) is communicated with an inlet of the first-stage mixer (11) through a pipeline, an inlet of the trioctyl phosphate feeding valve (12) is used for pumping trioctyl phosphate, and a trioctyl phosphate flow meter (13) is arranged at an inlet of the trioctyl phosphate feeding valve (12).
4. The mixed liquid dispensing system of claim 1, wherein: the pure water feeding device comprises a pure water feeding valve (9), an outlet of the pure water feeding valve (9) is communicated with an inlet of the second-stage mixer (6) through a pipeline, an inlet of the pure water feeding valve (9) is used for pumping pure water, and a pure water flowmeter (10) is arranged at an inlet of the pure water feeding valve (9).
5. The mixed liquid dispensing system of claim 1, wherein: the liquid caustic soda feeding device comprises a liquid caustic soda feeding valve (7), an outlet of the liquid caustic soda feeding valve (7) is communicated with an inlet of the second-stage mixer (6) through a pipeline, an inlet of the liquid caustic soda feeding valve (7) is used for pumping pure water, and a liquid caustic soda flow meter (8) is arranged at an inlet of the liquid caustic soda feeding valve (7).
6. The mixed liquid dispensing system of claim 1, wherein: the feeding pipe is a feeding ring pipe (4), and a plurality of discharging holes are arranged on the feeding ring pipe (4).
7. The mixed liquid dispensing system of claim 1, wherein: the inlet and the outlet of the circulating pump (18) are respectively provided with a circulating material inlet valve (19) and a circulating material outlet valve (17).
8. The mixed liquid dispensing system of claim 1, wherein: be equipped with stirring rake (3) in joining in marriage liquid cauldron (1), stirring rake (3) are rotated through the driving of agitator motor, and agitator motor sets up at joining in marriage liquid cauldron (1) top.
9. The mixed liquid dispensing system of claim 7, wherein: the output end of the circulating material outlet valve (17) is connected with a material returning valve (16) through a pipeline.
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| CN201922170924.7U CN211537590U (en) | 2019-12-06 | 2019-12-06 | Mixed liquid preparation system |
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| CN201922170924.7U CN211537590U (en) | 2019-12-06 | 2019-12-06 | Mixed liquid preparation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144960A (en) * | 2021-04-23 | 2021-07-23 | 承德石油高等专科学校 | Automatic liquid preparation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144960A (en) * | 2021-04-23 | 2021-07-23 | 承德石油高等专科学校 | Automatic liquid preparation device |
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