CN213668265U - Recovery processing device of waste sulfuric acid - Google Patents
Recovery processing device of waste sulfuric acid Download PDFInfo
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- CN213668265U CN213668265U CN202021608496.8U CN202021608496U CN213668265U CN 213668265 U CN213668265 U CN 213668265U CN 202021608496 U CN202021608496 U CN 202021608496U CN 213668265 U CN213668265 U CN 213668265U
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Abstract
The utility model relates to a recovery processing device of waste sulfuric acid belongs to dangerous waste liquid treatment technical field. The recovery processing device includes: the device comprises a resolver, a filter and a first-stage to N-stage multistage hedging concentrator, wherein the first-stage to N-stage hedging concentrator are sequentially connected in series, an atomizer for liquid inlet and an air injection part for air inlet are respectively arranged on the opposite inner side wall of each stage of hedging concentrator, and a demister is also arranged on each hedging concentrator; the analyzer, the filter and the atomizer of the first-stage hedging concentrator are connected in sequence. The utility model discloses the relative traditional processing apparatus of recovery processing device invests in for a short time, and ton raw materials processing cost is low to friendly to equipment, it is little to corrode, can prolong device life greatly, carries out concentrated processing through high temperature dry gas to the sulphuric acid after the atomizing, and sulphuric acid after the atomizing is big with high temperature dry gas contact area, and heat transfer effect is good, helps accelerating sulphuric acid concentration rate, and is high-efficient convenient.
Description
Technical Field
The utility model belongs to the technical field of dangerous waste liquid treatment, in particular to a recovery processing device of waste sulfuric acid.
Background
Sulfuric acid is a basic chemical raw material and is widely applied to the industries of chemical industry, metallurgy and the like. The traditional industry can generate a large amount of waste sulfuric acid, wherein the high-concentration waste sulfuric acid containing tar has the most serious harm degree, and the amount of waste sulfuric acid generated in China is about two thousand to ten thousand tons according to statistics.
At present, the traditional waste sulfuric acid treatment mode is to adopt an incineration method for treatment, namely, the waste sulfuric acid is added into an incinerator for high-temperature pyrolysis to generate sulfur dioxide, carbon dioxide and the like, and the sulfur dioxide, the carbon dioxide and the like are further purified, converted and absorbed to generate concentrated sulfuric acid, the process is thorough in treatment, but the incineration method has the defects of huge investment, high energy consumption, high operation cost, incapability of achieving the purpose of comprehensive utilization and poor operation condition; meanwhile, part of the waste sulfuric acid is discharged without being fully treated, so that water or soil is easily acidified, the ecological environment is greatly harmed, a large amount of resources are wasted, and the continuous development of modern green chemical industry is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned technical problem and provide a processing and comprehensive utilization device of waste sulfuric acid, for burning technology, this application simple process, investment are little, the running cost is low and can reach comprehensive utilization's purpose.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a recovery processing device of waste sulfuric acid comprises: a resolver, a filter and a one-stage to N-stage multistage hedging concentrator, wherein,
the first-stage to N-stage hedging concentrators are sequentially connected in series, an atomizer used for liquid inlet and an air injection part used for air inlet are respectively arranged on the opposite inner side walls of each stage of the hedging concentrators, and a demister is also arranged on each hedging concentrator;
the liquid outlet of resolver pass through first pipeline with the inlet of filter is connected, the liquid outlet of filter pass through the second pipeline with the atomizer inlet of one-level hedging concentrator is connected.
The utility model has the advantages that:
(1) the utility model adopts the method of introducing high-temperature dry gas to concentrate the atomized sulfuric acid, the contact area of the atomized sulfuric acid and the high-temperature dry gas is large, the heat transfer effect is good, the raw material treatment cost is low, the concentration speed of the sulfuric acid is favorably accelerated, and the device is efficient and convenient;
(2) the recovery processing device of the utility model is friendly to the equipment, has little corrosion, and can greatly prolong the service life of the device;
(3) macromolecular compounds and tar substances in the waste sulfuric acid can be removed through the filter, and a foundation is laid for improving the quality of the concentrated sulfuric acid;
(4) the analyzer can separate and separate sulfuric acid and tar;
(5) the utility model discloses can realize simple process, small investment, working costs are low under reaching sulphuric acid treatment retrieval and utilization as the prerequisite.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, a second shunt pipe with a control valve is arranged on the first pipeline.
The beneficial effect of adopting the further scheme is that: through the second shunt tubes, the asphaltenes can be conveyed out, so that the tar can be recycled.
Further, still including being located the filter with the extractor between the one-level hedging concentrator, the inlet of extractor pass through the third pipeline with the liquid outlet of filter is connected, the liquid outlet of extractor pass through the fourth pipeline with the atomizer inlet of one-level hedging concentrator is connected.
The beneficial effect of adopting the further scheme is that: the sulfuric acid and the valuable organic matters can be separated by the extractor, so that the waste sulfuric acid is treated, and a material foundation is laid for recovering thiophene.
Further, a first shunt pipe with a control valve is arranged on the third pipeline.
The beneficial effect of adopting the further scheme is that: through the first shunt tubes, the waste extracting agent containing thiophenesulfonic acid can be conveyed to the extracting agent regeneration tower, and thiophenesulfonic acid undergoes hydrolysis reaction at a certain temperature to generate thiophene, so that the extracting agent and thiophene are conveniently recovered.
The liquid outlet of the absorber is connected with the liquid inlet of the extractor through a sixth pipeline.
The beneficial effect of adopting the further scheme is that: through the adsorber, tar quality can be further treated, and the pigment of the waste sulfuric acid, especially the substance containing iron ions, is removed, so that the treatment of the waste sulfuric acid is realized.
Further, the N level is three levels or four levels.
The beneficial effect of adopting the further scheme is that: by limiting the treatment times of the hedging concentrator, the treatment quality of the waste sulfuric acid can be ensured, and the production cost can be effectively controlled.
Further, be provided with the buffer tank between the offset concentrator of adjacent two-stage, the inlet of buffer tank passes through the sixth pipeline and higher level the offset concentrator liquid outlet is connected, the liquid outlet of buffer tank passes through the seventh pipeline and subordinate the offset concentrator liquid inlet is connected.
The beneficial effect of adopting the further scheme is that: the buffer tank can protect the impact concentrator, and the production safety is improved.
Further, the gas injection part consists of a plurality of gas injection pipes, and the gas injection pipes are arranged on the opposite impact concentrator at intervals.
The beneficial effect of adopting the further scheme is that: through a plurality of gas ejector pipes, the coverage area of high-temperature dry gas can be enlarged, and the gas-liquid contact area is increased, so that the treatment efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the recycling device of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
2. a first-stage hedging concentrator; 4. an atomizer; 6. a gas injection part; 8. a gas ejector tube; 10. a demister; 12. a filter; 14. an adsorber; 16. an extractor; 18. a resolver; 20. a buffer tank; 22. a first shunt pipe; 24. a second shunt pipe; 26. a pump; 201. a second-stage hedging concentrator; 202. three-stage hedging concentrator.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be further described with reference to fig. 1:
in a first mode
This mode provides a recovery processing device of waste sulfuric acid, as shown in fig. 1, it includes: a resolver 18, a filter 12, a first-stage opposed-flow concentrator 2, a second-stage opposed-flow concentrator 201, and a third-stage opposed-flow concentrator 202, wherein,
the first-stage hedging concentrator 2, the second-stage hedging concentrator 201 and the third-stage hedging concentrator 202 are sequentially connected in series, an atomizer 4 for liquid inlet and an air injection part 6 for air inlet are respectively arranged on the opposite inner side walls of each stage of the hedging concentrator, and a demister 10 is further arranged on each hedging concentrator;
the liquid outlet of the analyzer 18 is connected with the liquid inlet of the filter 12 through a first pipeline, and the liquid outlet of the filter 12 is connected with the liquid inlet of the atomizer 4 of the first-stage hedging concentrator 2 through a second pipeline.
The method can solve the technical problems of high investment cost, low return and incapability of achieving the purpose of comprehensive utilization of the waste sulfuric acid treated by the incineration method.
The recovery processing device is friendly to equipment, has little corrosion, can achieve the aim of processing and recycling the sulfuric acid, and has the outstanding characteristics of simple process, low investment and low operating cost, and can greatly prolong the service life of the device, wherein the atomized sulfuric acid is concentrated by adopting a method of introducing high-temperature dry gas, the contact area of the atomized dilute sulfuric acid and the high-temperature dry gas is large, the heat transfer effect is good, the concentration speed of the dilute sulfuric acid is accelerated, the cost of raw materials per ton is low, and the treatment is efficient and convenient; macromolecular compounds in the waste sulfuric acid can be removed through the filter 12, and a foundation is laid for improving the quality of the concentrated sulfuric acid.
It will be appreciated that a pump may be provided between adjacent apparatus, for example between the filter 12 and the adsorber 14, the first conduit being connected to the pump 26 so as to enable the transfer of process fluid.
Further, a second shunt pipe 24 with a control valve is arranged on the first pipeline.
In this way, the second shunt tube 24 can transport tar and reuse asphaltene.
Further, still including being located filter 12 with between one-level hedging concentrator 2 extractor 16, the inlet of extractor 16 pass through the third pipeline with the liquid outlet of filter 12 is connected, the liquid outlet of extractor 16 pass through the fourth pipeline with the atomizer 4 inlet of one-level hedging concentrator 2 is connected.
Thus, sulfuric acid and thiophenesulfonic acid can be extracted and separated by the extractor 16, which not only realizes the treatment of waste sulfuric acid, but also lays a material foundation for recovering the valuable organic compound thiophene (thiophenesulfonic acid is hydrolyzed at a certain temperature to generate thiophene).
Further, a first shunt pipe 22 with a control valve is provided on the third pipe.
Thus, thiophene sulfonic acid can be conveyed to the extractant regeneration tower through the first shunt pipe 22, and the extractant and thiophene are conveniently recovered.
Further, the device also comprises an adsorber 14 positioned between the filter 12 and the extractor 16, wherein a liquid inlet of the filter 12 is connected with a liquid outlet of the adsorber 14 through a fifth pipeline, and a liquid outlet of the adsorber 14 is connected with a liquid inlet of the extractor 16 through a sixth pipeline.
In this way, the adsorption device 14 can further treat tar and remove the pigment of the waste sulfuric acid, thereby realizing the treatment of the waste sulfuric acid.
Further, the N level is three levels.
Therefore, the treatment quality of the waste sulfuric acid can be ensured and the production cost can be effectively controlled by limiting the treatment times of the hedging concentrator.
Further, a buffer tank 20 is arranged between the opposite flushing concentrators of the two adjacent stages, a liquid inlet of the buffer tank 20 is connected with a liquid outlet of the upper-level opposite flushing concentrator through a sixth pipeline, and a liquid outlet of the buffer tank 20 is connected with a liquid inlet of the lower-level opposite flushing concentrator through a seventh pipeline.
Like this, can play the guard action to the offset concentrator through setting up buffer tank 20, improve the production security.
Further, the gas injection part 6 is composed of a plurality of gas injection pipes 8, and the plurality of gas injection pipes 8 are arranged on the opposite impact concentrator at intervals.
The working steps and the principle are as follows:
s1, analysis treatment: injecting the waste sulfuric acid into an analyzer 18, adding water for analysis, standing and separating to obtain analyzed waste sulfuric acid and asphaltene; then, injecting the resolved waste sulfuric acid into a filter 12, and discharging the asphaltene from a second shunt pipe 24;
s2, filtering: the waste sulfuric acid analyzed in the step S1 is injected into the filter 12 to filter the tar in the dilute sulfuric acid;
s3, adsorption treatment: injecting the waste sulfuric acid filtered in the step S2 into an adsorber 14, wherein activated carbon is filled in the adsorber to further adsorb and filter tar and the like in the waste sulfuric acid to obtain dilute sulfuric acid;
s4, extraction treatment: injecting the dilute sulfuric acid adsorbed in the step S3 into an extractor 16, adding phenol for extraction, standing and separating to obtain extracted dilute sulfuric acid and waste extract; then, injecting the dilute sulfuric acid into a Venturi atomizer 4 of a first-stage hedging concentrator 2, discharging the waste extracting agent from a first shunt pipe 22, and regenerating;
s5, primary concentration treatment, namely injecting the dilute sulfuric acid extracted in the step S4 into a Venturi atomizer 4 of a primary hedging concentrator 2, and introducing dry high-temperature gas into the primary hedging concentrator 2 through a gas injection part 6; starting the Venturi atomizer 4, injecting the dilute sulfuric acid extracted in the step S4 into the primary hedging concentrator 2, and contacting the dilute sulfuric acid extracted in the step S4 with the dry high-temperature gas to form primary concentrated sulfuric acid liquid and primary evaporated gas;
s6, secondary-level to tertiary-level concentration treatment: sequentially adding the primary concentrated sulfuric acid solution obtained in the step S5 into a secondary and a tertiary hedging concentrators in the contact mode of the step S5, and performing secondary and tertiary concentration respectively to obtain concentrated sulfuric acid;
the above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A recovery processing device of waste sulfuric acid is characterized by comprising: a resolver (18), a filter (12) and a one-stage to N-stage multistage opposed-flow concentrator, wherein,
the first-stage to N-stage hedging concentrators are sequentially connected in series, an atomizer (4) for liquid inlet and an air injection component (6) for air inlet are respectively arranged on the opposite inner side walls of each stage of the hedging concentrators, and a demister (10) is also arranged on each hedging concentrator;
the liquid outlet of the resolver (18) is connected with the liquid inlet of the filter (12) through a first pipeline, and the liquid outlet of the filter (12) is connected with the liquid inlet of the atomizer (4) of the first-stage hedging concentrator (2) through a second pipeline.
2. The apparatus for recycling waste sulfuric acid as set forth in claim 1, wherein a second branch pipe (24) having a control valve is provided on said first pipe.
3. The recycling device of waste sulfuric acid as claimed in claim 1, further comprising an extractor (16) located between the filter (12) and the primary opposed concentrator (2), wherein a liquid inlet of the extractor (16) is connected with a liquid outlet of the filter (12) through a third pipeline, and a liquid outlet of the extractor (16) is connected with a liquid inlet of the atomizer (4) of the primary opposed concentrator (2) through a fourth pipeline.
4. The apparatus for recycling waste sulfuric acid as set forth in claim 3, wherein said third pipeline is provided with a first branch pipe (22) having a control valve.
5. The recovery processing device of waste sulfuric acid as claimed in claim 3, further comprising an adsorber (14) between the filter (12) and the extractor (16), wherein the liquid inlet of the filter (12) is connected to the liquid outlet of the adsorber (14) through a fifth pipeline, and the liquid outlet of the adsorber (14) is connected to the liquid inlet of the extractor (16) through a sixth pipeline.
6. The apparatus for recovering and treating waste sulfuric acid as claimed in claim 1, wherein the N-stage is a third stage or a fourth stage.
7. The recovery processing device of waste sulfuric acid according to claim 1, wherein a buffer tank (20) is arranged between the two adjacent stages of the countercurrent concentrators, a liquid inlet of the buffer tank (20) is connected with a liquid outlet of the higher stage countercurrent concentrator through a sixth pipeline, and a liquid outlet of the buffer tank (20) is connected with a liquid inlet of the lower stage countercurrent concentrator through a seventh pipeline.
8. The recovery processing device of the waste sulfuric acid according to claim 1, wherein the gas injection part (6) is composed of a plurality of gas injection pipes (8), and the plurality of gas injection pipes (8) are arranged on the opposite flushing concentrator at intervals.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111888831A (en) * | 2020-06-24 | 2020-11-06 | 刘发业 | Waste sulfuric acid recovery processing device and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111888831A (en) * | 2020-06-24 | 2020-11-06 | 刘发业 | Waste sulfuric acid recovery processing device and application thereof |
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