CN201662492U - Multifunctional slurry property measuring device - Google Patents
Multifunctional slurry property measuring device Download PDFInfo
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- CN201662492U CN201662492U CN2010201691201U CN201020169120U CN201662492U CN 201662492 U CN201662492 U CN 201662492U CN 2010201691201 U CN2010201691201 U CN 2010201691201U CN 201020169120 U CN201020169120 U CN 201020169120U CN 201662492 U CN201662492 U CN 201662492U
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- pipe
- meter
- measurement mechanism
- sampling cabinet
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Abstract
The utility model relates to a multifunctional slurry property measuring device, which comprises a sampling box with the bottom communicated with a slurry tank. A cover board with a hole, and a pH meter are arranged at the upper end of the sampling box, and the pH meter is clamped into the hole of the cover board. The multifunctional slurry property measuring device can be used to directly measure pH value of slurry, can directly make samples, simultaneously calculates concentration of the slurry by measuring pressure changes, is adaptable to desulfurization technique of wet limestone-gypsum, and has the advantages of low energy consumption, low equipment investment, low running expense and the like.
Description
Technical field
The utility model relates to the measurement mechanism field, the multi-functional size performance measurement mechanism that relates in particular to a kind of pH value, density of energy measurement slurries and be convenient to take a sample.
Background technology
Generating plant, cogeneration plant or other, can produce and be rich in SO in a large number as combustion apparatus such as the employed boilers of the energy with fire coal
2The sulfur-bearing harmful smoke, be one of important pollution source that cause atmospheric pollution.Along with progressively carrying out many SO in the minimizing atmospheric pollution of carrying out on a large scale, the environmental protection activity of creating clear water blue sky or engineering in the whole world
2The discharging rich and influential family implementing the flue gas desulfurization project, especially particularly outstanding with coal fired thermal power plant flue gas desulfurization.No matter be power plant and other coal-fired SO newly-built or that reconstruct, extend
2Discharging enterprise is in the flue gas desulfurization project of being implemented, to adopt the comparatively general of limestone-gypsum wet fuel gas desulfurizing technology.
In the limestone-gypsum wet fuel gas desulfurizing technology, by the circulation of calcium plaster, in the absorption tower, flue gas is absorbed and oxidation, promptly by carrying out following process: SO continuously
2To the dissolving of water → with CaCO
3The process of (gas phase and liquid phase) → utilize of neutralizing oxygen in the exhaust (or be blown in the liquid phase oxygen composition) carries out oxidation, absorbs SO
2In general, gypsum purity is very high in the desulfurated plaster that flue gas desulfurization produces, and the raw material that can be used as cement setting retarder or other gypsum product uses.Yet free water content is generally in 8～10% these scopes in the desulfurated plaster that contains free water that produces in the flue gas desulfurization technique process, still can't directly use, need to solve the technical matters of dehydration again, making desulfurated plaster be transformed into the free water water percentage at last is 3～4% product, can be used as cement setting retarder like this, perhaps further part or all of tie water is removed in calcining, become the semi-hydrated gypsum or the anhydrite of usefulness such as building, can directly be utilized again, reached the requirement that the secondary product resource of wet desulphurization is utilized again.The factor that influences the gypsum water percentage is more, as particle shape and size, the gypsum dehydration equipment running status of the pH value of the degree of supersaturation of gypsum in slurries, slurries, gypsum crystallization body and to participate in the factors such as accuracy of instrument of reaction control procedure relevant.In the generative process of gypsum, if process conditions control is bad, tend to generate especially acicular crystal of stratiform, further to sheet, bunch shape or petal development, its viscosity is difficult to dehydration greatly, as CaSO
31/2H
2The O crystal.And desirable gypsum crystal (CaSO
42H
2O) should be short cylinder, bigger than the former particle, be easy to dehydration.
So, control chemical reaction condition in the absorption tower well, the running status of adjusting system equipment is the assurance of gypsum quality.The pH measured value of absorption tower liquid is an important parameter that participates in reaction control, its output valve and some other signal, as the load of boiler, the concentration value of FGD inlet sulphuric dioxide and the density of fresh limestone slurries, integrate the flow that is used for determining to be transported to the fresh reactant slurries of fume desulfurating absorption tower.The pH value raises, and helps the raising of desulfuration efficiency, but the oxidation of gypsum slurries is affected, and oxidation is insufficient, and residual lime stone increases, and directly causing is high-quality decline.Otherwise the pH value reduces, and help the carrying out of oxidation, but desulfuration efficiency can't guarantee.So the pH value is the crucial controlling factor of desulphurization system, the accuracy of its measurement affects the performance of whole system, and its reliability effect the reliability of whole system.
PH value measuring technique in the at present domestic limestone-gypsum wet desulphurization technology has following characteristics and problem separately respectively.
1) flue gas desulfurization technique of Japanese weak source company, its pH meter be from directly being inserted into more than the liquid level in the stock tank of absorption tower, the fairly simple convenience of this method, but the position is higher, need add platform in addition.
2) flue gas desulfurization technique of Kawasaki, Japan heavy industry, the spray column pH meter system measurement method of Kawasaki then adopt from extraction pump outlet recirculatory pipe and get a branch, with 8m per hour
3The flow velocity of/h enters the pH measure case, then pH meter is inserted in the measure case, and same Kawasaki also is to adopt two to get one metering system.This measuring method is more loaded down with trivial details, and the flow process more complicated because position is higher, need add platform simultaneously equally in addition.Like this except the cost of pH meter own, expense is also corresponding increases considerably for other pipeline valve and platform etc.
3) Germany is than the flue gas desulfurization technique of Xiao Fu company, the design of its pH meter returns in the absorption tower pulse suspension system that (towards suspension system is the special technology of Germany than Xiao Fu company on the pipeline of absorption tower, realize the self-loopa of slurries in the tower by the pulse suspension pump, replace other family's absorption tower stirrer, reach evenly mixed, stock tank bottom slurries do not precipitate, and realize the abundant oxidation purpose of calcium sulfite), the fairly simple practicality of this mentality of designing.
4) flue gas desulfurization technique of this smooth Miller company of Germany, scheme (one) extracts take-off pipe and adds two restriction orifices from gypsum extraction pump discharge pipe, reduce its pressure, reduce serous granule to the abrasion of pH probe, pH is inserted in the vertical pipe of take-off line, and add the wash-down water system, so that regularly pH meter is washed.Take-off line turns back in the absorption tower at last.Scheme (two) adds a restriction orifice from gypsum extraction pump discharge pipe, reducing its main pipe pressure is convenient to take-off line and returns person in charge's (is 0.02MPa such as setting the restriction orifice pressure drop), before restriction orifice, extract take-off pipe then and add two butterfly valves, pH meter is inserted in the vertical pipe of take-off line between two butterfly valves, and add the wash-down water system, so that regularly pH meter is washed.Take-off line turns back in the person in charge behind the restriction orifice at last.This scheme is simple, but flow velocity is higher, and is more serious to the probe abrasion.
5) flue gas desulfurization technique of U.S. Marsulex Environmental Technology AS, the design of U.S. Marsulex company pH meter is very simple, directly be connected on the discharge pipe of plaster slurry pump, in order to prevent directly washing away of slurries, pH interface pipeline in fluid in the same way, so promptly can reduce of the abrasion of gypsum slurries particle, can not form non-current slurries in can avoiding again taking over the pH meter probe; Reached the purpose of real-time monitoring pH value.
6) U.S. Ba Wei (B﹠amp; W) flue gas desulfurization technique of company, U.S. Ba Wei company and MarsulexpH meter design concept are closely similar, also are directly to be connected on the discharge pipe of plaster slurry pump, have just increased the online flushing of fresh water (FW), and have cancelled ball valve.There is practical application in the Xuzhou prosperous power plant of China;
7) flue gas desulfurization technique of Austria Energy and Environment joint-stock company (AEE), the flue gas desulfurization technique pH meter design concept of Austrian AEE are to extract a take-off pipe from the plaster slurry pump discharge pipe, connect the two-way pH meter then, turn back to the absorption tower after the merging; And pH meter added clean-up line.
8) flue gas desulfurization technique of French Alstom (ALSTON) company, France ALSTON company flue gas desulfurization technique pH meter design of measuring system is on the sidewall of absorption tower, this method of testing is simple and practical, but may pH meter needs prophylactic repair to safeguard or occur slurries water clock situation during flushing easily.
In sum, each tame pH value measurement mechanism respectively has characteristics, but exists because the apparatus structure complexity causes measuring method more loaded down with trivial details, flow process more complicated, cost height, problems such as serious wear, function singleness.
The utility model content
The utility model provides a kind of simple in structure at above-mentioned the deficiencies in the prior art, measures multi-functional easily size performance measurement mechanism.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of multi-functional size performance measurement mechanism, this measurement mechanism include the sampling cabinet that the bottom is communicated with the slurries pond; Described sampling cabinet upper end is provided with cover plate with holes and pH meter, and described pH meter is fastened in the hole of cover plate.
Preferably, described sampling cabinet bottom is made as taper, and the tip of this taper is communicated with the slurries pond.
Preferably, the angle bottom the described taper is less than 60 degree.
Preferably, the pipeline in connection sampling cabinet and slurries pond is made as two sections: take-off pipe and small takeover; Described sampling cabinet, small takeover, take-off pipe are communicated with successively with the slurries pond; The internal diameter of described take-off pipe is more than 2.5 times of small takeover.
Preferably, the internal diameter of described take-off pipe is 150mm; The internal diameter of described small takeover is 20mm.
Preferably, described take-off pipe is provided with valve.
Preferably, the upper side wall of described sampling cabinet is provided with the run-down pipe that is communicated with sampling cabinet top.
Preferably, the sidewall of described sampling cabinet is provided with two pressure units, and difference in height is at least 200mm.
Compared with prior art, the advantage that the utlity model has: the utility model size performance measurement mechanism is used for measuring serum density, pH value and sampling in desulphurization system; This measurement mechanism comprises the sampling cabinet that the bottom is communicated with the slurries pond, is provided with cover plate with holes and pH meter on sampling cabinet, and described pH meter is fastened in the hole of cover plate; And the pipeline that sampling cabinet is communicated with the slurries pond is made as two sections: take-off pipe and small takeover, and take-off pipe is provided with valve; Sampling cabinet is stored stock tank is drawn in the tower slurries and sampling; PH meter is inserted into the measurement of carrying out the pH value in the case; Run-down pipe gets rid of slurries to melt pit, guarantees the freshness of slurries in the sampling cabinet and prevent that slurries from overflowing from casing, in addition, the differential pressure measurement device is installed on the sampling pipe, is used to calculate serum density.
According to the utility model, because sampling cabinet is located at the below in slurries pond, thereby pH meter also is arranged in low level, and absolute altitude is below 1.5 meters, not only is convenient to flushing but also is convenient to operation maintenance; It is slower that pH meter is measured the rate of flow of fluid of slurries, and the flow velocity in the casing is because the little internal diameter of small takeover causes being generally less than 1m/s, and is less to washing away of pH probe like this.This scheme pipeline design is quite simple, only needs a small amount of valve and pipeline.This scheme is not because the low level layout needs to be provided with inspection platform.By this device, can conveniently carry out the slurries sampling simultaneously, leave the density measure interface and can adopt the differential pressure method density measurement.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Description of reference numerals:
Slurries pond, 1-absorption tower
2-butterfly valve or diaphragm valve
The 3-take-off pipe
The 4-small takeover
5-semicircle cover plate
The 6-sampling cabinet
The 7-pH meter
The 8-run-down pipe
The 9-first pressure unit interface
The 10-second pressure unit interface.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model multifunction measuring set is further specified, to help understanding content of the present invention.Should be understood that the utility model is not limited to following embodiment, can carry out numerous variations within the scope of the claims.
A kind of multi-functional size performance measurement mechanism comprises sampling cabinet 6, and its bottom is communicated with slurries pond, absorption tower 1; Sampling cabinet 6 upper ends are provided with semicircle cover plate 5 with holes and are fastened on pH meter 7 in the hole of cover plate 5.Sampling cabinet 6 is preferably conical bottom, and awl end angle is less than 60 degree, diameter 500mm, high 1.2m.PH meter 7 can use the industrial online pH meter of selling on the market.PH meter 7 directly is inserted in the sampling cabinet 6, sampling cabinet 6 is connected with slurries pond, absorption tower 1 by take-off pipe 3, in case of necessity pH meter 7 is extracted out from sampling cabinet 6, to its periodic flushing, the position of pH meter 7 is lower, does not need to be provided with in addition platform, has saved recondition expense, and its pipeline design is quite simple, has saved a large amount of operating costs.
The pipeline that is communicated with sampling cabinet 6 and slurries pond 1 is made as two sections: take-off pipe 3 and small takeover 4; Sampling cabinet 6, small takeover 4, take-off pipe 3 are communicated with successively with slurries pond 1; The internal diameter of take-off pipe 3 is more than 2.5 times of small takeover 4.Take-off pipe 3 is provided with valve 2; Valve 2 is preferably butterfly valve or diaphragm valve.In the present embodiment, the internal diameter of take-off pipe is 150mm; The internal diameter of small takeover is 20mm.
In above-mentioned multi-functional size performance measurement mechanism, when to pH meter flushing or maintenance, pH meter 7 to be extracted out simultaneously, valve 2 can not cut out, and package unit can continue on for sampling.Because slurries flow to melt pit through run-down pipe 8, the preferred diameter of the run-down pipe size identical with take-off pipe, for energy-conservation consideration, preferred small takeover 4 is selected the wear-resistant ceramic short tube of diameter 20mm for use, sampling cabinet 6 can be used carbon steel line with rubber material, preferred glass-reinforced plastic material or the polyurethane material used, thus cost reduced.Shut-off valve 2 when maintenance can be changed package unit fast.The rate of flow of fluid of pH meter measurement slurries is slower, and the flow velocity of absorption tower run-down pipe is generally less than 1m/s, and is less to washing away of pH probe like this.
Sampling cabinet leaves two pressure units: the first pressure unit interface 9 and the second pressure unit interface 10, both differences in height are 200mm, can pass through the differential pressure measurement serum density.
Multi-functional size performance measurement mechanism of the present utility model is applicable to that limestone-gypsum wet desulfurizing process and other need measure in the chemical technology of pH value, density measurement.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a multi-functional size performance measurement mechanism is characterized in that: the sampling cabinet that is communicated with the slurries pond bottom this measurement mechanism includes; Described sampling cabinet upper end is provided with cover plate with holes and pH meter, and described pH meter is fastened in the hole of cover plate.
2. measurement mechanism as claimed in claim 1 is characterized in that: described sampling cabinet bottom is made as taper, and the tip of this taper is communicated with the slurries pond.
3. measurement mechanism as claimed in claim 2 is characterized in that: the angle of described taper bottom is less than 60 degree.
4. measurement mechanism as claimed in claim 2 is characterized in that: the pipeline that is communicated with sampling cabinet and slurries pond is made as two sections: take-off pipe and small takeover; Described sampling cabinet, small takeover, take-off pipe are communicated with successively with the slurries pond; The internal diameter of described take-off pipe is more than 2.5 times of small takeover.
5. measurement mechanism as claimed in claim 4 is characterized in that: the internal diameter of described take-off pipe is 150mm; The internal diameter of described small takeover is 20mm.
6. measurement mechanism as claimed in claim 4 is characterized in that: described take-off pipe is provided with valve.
7. measurement mechanism as claimed in claim 1 is characterized in that: the upper side wall of described sampling cabinet is provided with the run-down pipe that is communicated with sampling cabinet top.
8. measurement mechanism as claimed in claim 1 is characterized in that: the sidewall of described sampling cabinet is provided with two pressure units, and difference in height is at least 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201691201U CN201662492U (en) | 2010-04-20 | 2010-04-20 | Multifunctional slurry property measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201691201U CN201662492U (en) | 2010-04-20 | 2010-04-20 | Multifunctional slurry property measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662492U true CN201662492U (en) | 2010-12-01 |
Family
ID=43232911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201691201U Expired - Lifetime CN201662492U (en) | 2010-04-20 | 2010-04-20 | Multifunctional slurry property measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662492U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221513A (en) * | 2011-03-31 | 2011-10-19 | 成都山江岩土科技有限责任公司 | Slurry density sensor |
| CN102692361A (en) * | 2012-06-15 | 2012-09-26 | 南通水山环保设备有限公司 | Slurry comprehensive component tester for flue gas desulphurization system of thermal power plant |
| CN102759494A (en) * | 2012-07-25 | 2012-10-31 | 北京中新国能环保科技有限公司 | Source obtaining device and method in slurry density measurement of desulfurization tower |
| CN108088531A (en) * | 2017-12-07 | 2018-05-29 | 中国恩菲工程技术有限公司 | The detection method and device of separating interface |
-
2010
- 2010-04-20 CN CN2010201691201U patent/CN201662492U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221513A (en) * | 2011-03-31 | 2011-10-19 | 成都山江岩土科技有限责任公司 | Slurry density sensor |
| CN102692361A (en) * | 2012-06-15 | 2012-09-26 | 南通水山环保设备有限公司 | Slurry comprehensive component tester for flue gas desulphurization system of thermal power plant |
| CN102759494A (en) * | 2012-07-25 | 2012-10-31 | 北京中新国能环保科技有限公司 | Source obtaining device and method in slurry density measurement of desulfurization tower |
| CN108088531A (en) * | 2017-12-07 | 2018-05-29 | 中国恩菲工程技术有限公司 | The detection method and device of separating interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |