CN218047339U - Open promptly and stop formula sulphuric acid on-line mixing system promptly - Google Patents
Open promptly and stop formula sulphuric acid on-line mixing system promptly Download PDFInfo
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- CN218047339U CN218047339U CN202222128399.4U CN202222128399U CN218047339U CN 218047339 U CN218047339 U CN 218047339U CN 202222128399 U CN202222128399 U CN 202222128399U CN 218047339 U CN218047339 U CN 218047339U
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Abstract
The utility model provides an open promptly and stop formula sulphuric acid online mixing system promptly, include: the device comprises a sulfuric acid diluter, a water inlet pipeline, a water outlet pipeline, a concentrated sulfuric acid pipeline and a flow meter, wherein the sulfuric acid diluter is communicated with the dilution water pipeline and the concentrated sulfuric acid pipeline; the online sulfuric acid using end is communicated with the sulfuric acid diluter; and the control system is in signal connection with the flowmeter and the regulating valve. The utility model discloses an open on-line hybrid system of formula sulphuric acid promptly stops, the small investment, area are little, and dilute sulphuric acid concentration preparation is accurate, efficient.
Description
Technical Field
The utility model relates to a sulphuric acid field of diluting especially relates to an open on-line hybrid system of formula of stopping promptly.
Background
Sulfuric acid is an inorganic compound with a chemical formula of H2SO4, can be used for manufacturing fertilizers, drugs, explosives, pigments, detergents, storage batteries and the like, is widely applied to industries of purifying petroleum, metal smelting, dyes and the like, is commonly used as a chemical reagent, and can be used as a dehydrating agent and a sulfonating agent in organic synthesis. In actual production, concentrated sulfuric acid needs to be prepared into dilute sulfuric acid with a specific concentration according to actual needs, for example, the pH adjustment of various synthesis and wastewater treatment methods generally adopts about 20% -30% of dilute sulfuric acid.
In the related art, the sulfuric acid dilution system generally includes a dilution tank and a dilute sulfuric acid storage tank connected to each other, wherein a stirrer is disposed in the dilution tank, and an opening is disposed at the top of the dilution tank. Concentrated sulfuric acid is manually measured, dilution water is put into a dilution tank, after the stirrer stirs for a certain time, the obtained dilute sulfuric acid is transferred to a dilute sulfuric acid storage tank for volume storage, and the obtained dilute sulfuric acid is prepared for continuous use of subsequent processes. The sulfuric acid dilution system is manually calculated and fed, the precision of dilute sulfuric acid is difficult to control, a dilute sulfuric acid storage tank is additionally arranged, and the investment is increased. It is therefore particularly important to provide an economical sulfuric acid dilution system that can accurately control the concentration of dilute sulfuric acid, i.e., start-stop.
Disclosure of Invention
Based on the above object, the utility model provides an open promptly and stop formula sulphuric acid online mixing system to solve or partially solve above-mentioned technical problem:
an on-line mixing system of sulfuric acid which is on-line and on-line, comprising:
the sulfuric acid diluter is communicated with a dilution water pipeline and a concentrated sulfuric acid pipeline, and the dilution water pipeline and the concentrated sulfuric acid pipeline are respectively provided with a flow meter and an adjusting valve;
the online sulfuric acid using end is communicated with the sulfuric acid diluter;
and the control system is in signal connection with the flowmeter and the regulating valve.
Further, the sulfuric acid diluter comprises a shell, an upper cover plate, a dilution cooling section and a lower bottom plate, wherein the upper cover plate, the dilution cooling section and the lower bottom plate are arranged from top to bottom;
a transverse plate is arranged at the upper part of the dilution cooling section, the transverse plate divides the dilution cooling section into a dilution chamber and a cooling chamber, and a plurality of openings are formed in the transverse plate;
the diluting chamber is communicated with the diluting water pipeline and the concentrated sulfuric acid pipeline, the cooling chamber is communicated with the online using end of the sulfuric acid, and the cooling cavity is used for inputting cooling water.
Furthermore, a dilution water inlet and a concentrated sulfuric acid inlet are formed in the upper cover plate, the dilution chamber is communicated with the dilution water pipeline through the dilution water inlet, and the dilution chamber is communicated with the concentrated sulfuric acid pipeline through the concentrated sulfuric acid inlet; and a dilute sulfuric acid outlet is formed in the lower bottom plate, and the cooling chamber is communicated with the online using end of the sulfuric acid through the dilute sulfuric acid outlet.
Further, the cooling tower is further included and communicated with the cooling cavity.
Furthermore, the shell is provided with a cooling water inlet and a cooling water outlet which are communicated with the cooling cavity, the water cooling tower is provided with a hot water inlet and a cold water outlet, the cooling water inlet is communicated with the cold water outlet, and the cooling water outlet is communicated with the hot water inlet.
Furthermore, a centrifugal pump, an on-site flowmeter and an on-site thermometer are arranged on a pipeline between the cooling water inlet and the cooling water outlet.
Further, a water replenishing port is also arranged on the water cooling tower.
Furthermore, the flowmeter on the concentrated sulfuric acid pipeline is a fluorine-lined flowmeter, and the regulating valve is a fluorine-lined regulating valve.
Further, the sulfuric acid diluter is a graphite sulfuric acid diluter.
Furthermore, the material of dilution water pipeline is stainless steel, the material of concentrated sulfuric acid pipeline is plastics.
From the above, it can be seen that the on-line mixing system of sulfuric acid that the utility model provides a stop promptly has following beneficial effect:
1. the sulfuric acid on-line mixing system is started and stopped immediately, and the safety is high. The dilution of concentrated sulfuric acid in the sulfuric acid diluter is started and stopped along with the start and stop of the online use end of the sulfuric acid, no storage tank with the function of storing the dilute sulfuric acid is arranged between the dilute sulfuric acid diluter and the sulfuric acid, the dilute sulfuric acid is prepared and used on line, the accumulation and the buffer storage of the dilute sulfuric acid are avoided, the equipment investment and the occupied area are reduced, and the preparation efficiency and the process safety are improved.
2. The dilution precision is high, and the concentration of dilute sulfuric acid is accurate. The flow correlation is adopted by the dilution water flow automatic control system and the concentrated sulfuric acid flow control system to carry out double-loop closed-loop regulation, so that the proportion of dilution water and concentrated sulfuric acid is effectively controlled, and the concentration stability of dilute sulfuric acid is ensured. The flow of the dilution water and the flow of the concentrated sulfuric acid can be directly set through a control system so as to meet the requirements of different concentrations of the dilute sulfuric acid.
3. The sulfuric acid preparation device has high preparation efficiency and good heat dissipation effect. The sulfuric acid preparation device comprises a dilution chamber and a cooling chamber which are separated by a transverse plate, and the transverse plate is provided with a plurality of openings. Concentrated sulfuric acid in the diluting chamber is mixed with diluting water to form dilute sulfuric acid, the dilute sulfuric acid is dispersed into strands through the openings and flows into the cooling chamber, the downstream flow speed of the dilute sulfuric acid is reduced, the dilute sulfuric acid has enough time to be cooled, and the temperature of the dilute sulfuric acid is effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of an on-line mixing system of sulfuric acid with a function of stopping immediately according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sulfuric acid diluter according to an embodiment of the present invention.
In the figure: 1-sulfuric acid diluter; 11-an upper cover plate; 111-dilution water inlet; 112-concentrated sulfuric acid inlet; 12-a dilution cooling section; 121-a transverse plate; 122-a dilution chamber; 123-a cooling chamber; 13-lower base plate; 131-dilute sulfuric acid outlet; 14-a housing; 141-cooling water inlet; 142-a cooling water outlet; 15-a cooling chamber; 2-dilution water pipeline; 3-concentrated sulfuric acid pipeline; 4-a flow meter; 5-adjusting the valve; 6-sulfuric acid on-line using end; 7-a control system; 8-a water cooling tower; 81-hot water inlet; 82-a cold water outlet; 83-centrifugal pump; 84-water replenishing port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. As used herein, the terms "first," "first," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. "communication" or "communicating" and like terms are not limited to physical or mechanical communication, but may include electrical communication, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the related art, the sulfuric acid dilution system comprises a dilution tank and a dilute sulfuric acid storage tank which are connected, wherein a stirrer is arranged in the dilution tank, and an opening is formed in the top of the dilution tank. And (3) dilution process: closing a channel between the dilution tank and a dilute sulfuric acid storage tank, manually calculating the use amount of concentrated sulfuric acid and the use amount of dilution water, measuring the dilution water, sequentially adding the concentrated sulfuric acid into the sulfuric acid dilution tank, and starting a stirrer to stir for a certain time to obtain dilute sulfuric acid; opening a channel between the dilution tank and the dilute sulfuric acid storage tank, and transferring the dilute sulfuric acid to the dilute sulfuric acid storage tank to finish the preparation and storage of a batch of dilute sulfuric acid; and then repeating the steps to finish the preparation and storage of a plurality of batches of dilute sulfuric acid, so that enough dilute sulfuric acid is stored in the dilute sulfuric acid storage tank for continuous use in the subsequent process production.
The above system has the following problems:
(1) The system does not contain an electric control instrument such as a flowmeter, an adjusting valve and the like, the concentrated sulfuric acid dosage and the dilution water dosage need to be manually calculated, and manual metering and manual feeding are needed, so that the preparation efficiency is low, and the accuracy and the stability of the concentration and the preparation quantity of the dilute sulfuric acid are difficult to ensure.
(2) The dilute sulfuric acid storage tank is arranged, the volume of the dilute sulfuric acid storage tank is far larger than that of the dilution tank, the dilute sulfuric acid storage tank is also provided with instruments such as a liquid level meter, and the like, so that the occupied area of equipment is large, and the investment is high. The concentrated sulfuric acid in the dilution tank and the dilution water are stirred into the dilute sulfuric acid for a certain time, and the subsequent process production using the dilute sulfuric acid is continuously operated, so that a dilute sulfuric acid storage tank is required to be arranged, enough dilute sulfuric acid is stored in advance, and the dilute sulfuric acid cannot be used immediately after being started. In addition, the storage of a large amount of dilute sulfuric acid has potential safety hazards, and is not beneficial to production.
(3) The dilution tank top sets up the opening, and concentrated sulfuric acid produces the acid mist with the dilution water stirring in-process, can diffuse to the air through the opening in, the polluted environment. During the dilution, want to close the passageway between dilution tank and the dilute sulfuric acid storage tank, the dilution tank is equivalent to the enclosure space, if do not set up the opening intercommunication air at the dilution tank top, concentrated sulfuric acid and dilution water can't be squeezed into.
In conclusion, the sulfuric acid dilution system in the related technology has the problems of poor stability of the concentration and the accuracy of the preparation amount of the dilute sulfuric acid, large equipment investment, environmental pollution and the like.
In view of the above, one or more embodiments of the present invention provide an on-line mixing system for sulfuric acid that is on-line and off-line.
The technical solutions of one or more embodiments of the present invention will be described in detail below with reference to specific embodiments.
An on-line mixing system of sulfuric acid which can be started and stopped immediately comprises:
referring to fig. 1, a dilution water pipeline 2 and a concentrated sulfuric acid pipeline 3 are communicated with a sulfuric acid diluter 1, and a flow meter 4 and an adjusting valve 5 are respectively arranged on the dilution water pipeline 2 and the concentrated sulfuric acid pipeline 3; the sulfuric acid on-line use end 6 is communicated with the sulfuric acid diluter 1; and the control system 7 is in signal connection with the flowmeter 4 and the regulating valve 5.
The control system 7 is a PLC control system, and the relationship among the flow and the concentration of dilution water, concentrated sulfuric acid and dilute sulfuric acid is embedded in the system. Dilution water flow and concentrated sulfuric acid flow can be input on a panel of the PLC control system 7, and the opening and closing degree of the regulating valve is continuously regulated by the PLC control system 7 until the dilution water flow and the concentrated sulfuric acid flow reach input values. The flow correlation is adopted by the dilution water flow automatic control system and the concentrated sulfuric acid flow control system to carry out double-loop closed-loop adjustment, so that the proportion of dilution water and concentrated sulfuric acid is effectively controlled, and the concentration stability of dilute sulfuric acid is ensured. The one-key automatic start-stop system is configured on line and has high response speed.
Referring to fig. 2, in some embodiments, the sulfuric acid diluter 1 includes a housing 14, an upper cover plate 11, a dilution cooling section 12, and a lower bottom plate 13, wherein the housing 14 is enclosed outside the dilution cooling section 12, and forms a cooling cavity 15 with the dilution cooling section 12. The upper cover plate 11 is bolted to the opening at the upper end of the dilution cooling section 12, and the lower base plate 13 is bolted to the opening at the lower end of the dilution cooling section 12.
The dilution cooling section 12 is used for preparing cooled dilute sulfuric acid. Concentrated sulfuric acid, when mixed with dilution water, can give off a large amount of heat, if the heat is not removed, the product can be volatilized and lost, and equipment can be damaged. Therefore, a cooling cavity 15 is formed between the shell 14 and the dilution cooling section 12, and cooling water is introduced into the cooling cavity 15 for removing heat released by mixing concentrated sulfuric acid and dilution water to reduce the temperature of the dilute sulfuric acid. The water inlet temperature of the cooling water is 37 ℃, and the water return temperature is 32 ℃.
More specifically, a transverse plate 121 is disposed at an upper portion of the dilution cooling section 12, the transverse plate 121 divides the dilution cooling section 12 into a dilution chamber 122 and a cooling chamber 123, and a plurality of openings are disposed on the transverse plate 121. The cooling chamber 123 is dedicated for cooling the dilute sulfuric acid, and the transverse plate 121 is provided with a plurality of openings. The dilute sulfuric acid in the dilution chamber 122 enters the cooling chamber 123 through the open holes and is split, so that the downstream flow speed of the dilute sulfuric acid is reduced, and the dilute sulfuric acid is ensured to have enough time for cooling. The upper part of the dilution cooling section 12 is provided with a transverse plate 121, so that the height of the cooling chamber 123 is larger than that of the mixing chamber 122, the sufficient heat exchange area can be ensured, and the temperature of dilute sulfuric acid can be effectively reduced.
The dilution chamber 122 is communicated with the dilution water pipeline 2 and the concentrated sulfuric acid pipeline 3, that is, the dilution water in the dilution water pipeline 2 and the concentrated sulfuric acid in the concentrated sulfuric acid pipeline 3 are input into the dilution chamber 122 for mixing.
In some embodiments, the upper cover plate 11 is provided with a dilution water inlet 111 and a concentrated sulfuric acid inlet 112, the dilution chamber 122 is communicated with the dilution water pipeline 2 through the dilution water inlet 111, and the dilution chamber 122 is communicated with the concentrated sulfuric acid pipeline 3 through the concentrated sulfuric acid inlet 112.
In some embodiments, the cooling chamber 123 is in communication with the sulfuric acid in-line use end 6, and the cooled dilute sulfuric acid from the cooling chamber 123 is passed into the sulfuric acid in-line use end 6 for use. It is important to note that any storage tank, storage chamber, etc. having a function of storing dilute sulfuric acid is not provided between the cooling chamber 123 and the sulfuric acid line using end 6.
In some embodiments, a dilute sulfuric acid outlet 131 is provided on the lower base plate 13, and the cooling chamber 123 is communicated with the sulfuric acid on-line using end 6 through the dilute sulfuric acid outlet 131.
In some embodiments, a water cooling tower 8 is also included for recirculating the supply of cooling water, the water cooling tower 8 being in communication with the cooling chamber 15.
In some embodiments, the housing 14 is provided with a cooling water inlet 141 and a cooling water outlet 142 which are communicated with the cooling chamber 15, the cooling water tower 8 is provided with a hot water inlet 81 and a cooling water outlet 82, the cooling water inlet 141 is communicated with the cooling water outlet 82, and the cooling water outlet 142 is communicated with the hot water inlet 81, so as to cool the cooling water after absorbing heat and then input the cooling water into the sulfuric acid diluter 11 again.
In some embodiments, a centrifugal pump 83 and an in situ flow meter are provided in the piping between the cooling water inlet 141 and the cooling water outlet 82. The centrifugal pump 83 is used for inputting the cooled cooling water in the water cooling tower 8 into the cooling chamber 123. The on-site flow meter is used for displaying the flow rate of the cooling water so as to confirm whether the amount of the cooling water in the cooling chamber 123 is enough to ensure the cooling requirement of the cooling chamber 123.
In some embodiments, the water cooling tower 8 is provided with a water replenishing port 84 for replenishing external water to ensure sufficient cooling water.
In some embodiments, the flow meter on the concentrated sulfuric acid pipeline 3 is a fluorine-lined flow meter, and the regulating valve is a fluorine-lined regulating valve. The fluorine-lined flow meter 4 and the fluorine-lined regulating valve 5 are effectively resistant to concentrated sulfuric acid corrosion and long in service life.
In some embodiments, the sulfuric acid diluter 1 is a graphite sulfuric acid diluter 1, the dilution water pipeline 2 is made of stainless steel, and the concentrated sulfuric acid pipeline 3 is made of plastic.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides an open promptly and stop formula sulphuric acid on-line mixing system which characterized in that includes:
the device comprises a sulfuric acid diluter, a water inlet pipeline, a water outlet pipeline, a concentrated sulfuric acid pipeline and a flow meter, wherein the sulfuric acid diluter is communicated with the dilution water pipeline and the concentrated sulfuric acid pipeline;
the online sulfuric acid using end is communicated with the sulfuric acid diluter;
and the control system is in signal connection with the flowmeter and the regulating valve.
2. The on-line mixing system of the sulfuric acid as claimed in claim 1, wherein the sulfuric acid diluter comprises a housing, an upper cover plate, a dilution cooling section and a lower bottom plate, the upper cover plate, the dilution cooling section and the lower bottom plate are arranged from top to bottom, the housing is wrapped outside the dilution cooling section, and a cooling cavity is formed between the housing and the dilution cooling section;
a transverse plate is arranged at the upper part of the dilution cooling section, the transverse plate divides the dilution cooling section into a dilution chamber and a cooling chamber, and a plurality of openings are formed in the transverse plate;
the diluting chamber is communicated with the diluting water pipeline and the concentrated sulfuric acid pipeline, the cooling chamber is communicated with the online using end of the sulfuric acid, and the cooling cavity is used for inputting cooling water.
3. The on-line mixing system of claim 2, wherein the upper cover plate is provided with a dilution water inlet and a concentrated sulfuric acid inlet, the dilution chamber is communicated with the dilution water pipeline through the dilution water inlet, and the dilution chamber is communicated with the concentrated sulfuric acid pipeline through the concentrated sulfuric acid inlet; and a dilute sulfuric acid outlet is formed in the lower bottom plate, and the cooling chamber is communicated with the online use end of the sulfuric acid through the dilute sulfuric acid outlet.
4. The on-line sulfuric acid mixing system as recited in claim 2, further comprising a water cooling tower in communication with the cooling chamber.
5. The on-line mixing system of sulfuric acid as set forth in claim 4, wherein the housing is provided with a cooling water inlet and a cooling water outlet communicating with the cooling chamber, the cooling tower is provided with a hot water inlet and a cooling water outlet, the cooling water inlet is communicated with the cooling water outlet, and the cooling water outlet is communicated with the hot water inlet.
6. The on-line mixing system of sulfuric acid as set forth in claim 5 wherein a centrifugal pump, an on-site flow meter and an on-site thermometer are disposed on the pipeline between the cooling water inlet and the cooling water outlet.
7. The on-line mixing system of sulfuric acid as set forth in claim 4 wherein the water cooling tower is further provided with a water replenishing port.
8. The on-line mixing system of sulfuric acid as set forth in claim 1 wherein the flow meter on the concentrated sulfuric acid pipeline is a fluorine lined flow meter and the regulating valve is a fluorine lined regulating valve.
9. The on-line sulfuric acid mixing system as recited in claim 1, wherein the sulfuric acid diluter is a graphite sulfuric acid diluter.
10. The on-line mixing system for sulfuric acid as set forth in claim 1 wherein the diluting water pipeline is made of stainless steel and the concentrated sulfuric acid pipeline is made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222128399.4U CN218047339U (en) | 2022-08-14 | 2022-08-14 | Open promptly and stop formula sulphuric acid on-line mixing system promptly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222128399.4U CN218047339U (en) | 2022-08-14 | 2022-08-14 | Open promptly and stop formula sulphuric acid on-line mixing system promptly |
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| CN218047339U true CN218047339U (en) | 2022-12-16 |
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| CN202222128399.4U Active CN218047339U (en) | 2022-08-14 | 2022-08-14 | Open promptly and stop formula sulphuric acid on-line mixing system promptly |
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