CN104807856A - Device for measuring pH value of seriflux in absorption tower - Google Patents
Device for measuring pH value of seriflux in absorption tower Download PDFInfo
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- CN104807856A CN104807856A CN201510198293.3A CN201510198293A CN104807856A CN 104807856 A CN104807856 A CN 104807856A CN 201510198293 A CN201510198293 A CN 201510198293A CN 104807856 A CN104807856 A CN 104807856A
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Abstract
The invention relates to a device for measuring the pH value of seriflux in an absorption tower. The device comprises an inclined connector pipe, a sampling valve, a washing three-way valve, electrode three-way valves, pH electrodes, electrode brackets, an overflow valve, a bent pipe, an overflow pipe and a washing water valve, wherein one end of the inclined connector pipe is communicated with the outlet in the lower part of a seriflux tank of the absorption tower, and is upwards obliquelyarranged on the outer side wall of the seriflux tank in the horizontal direction; the other end of the inclined connector pipe, the sampling valve, the washing three-way valve, the electrode three-way valves, the overflow valve and the bent pipe are communicated in sequence and are obliquely arranged in a sealed manner; the other end of the bent pipe is connected with the downwards arranged overflow pipe. The device has low possibility of blocking pipelines, is small in occupied field space, saves space, is simple and feasible in mounting, reduces the production cost of the equipment, is convenient to operate, has low possibility of breaking down, is convenient to operate and maintain, and can be widely applied to measurement of the pH value of seriflux in all types of absorption towers.
Description
Technical field
The invention belongs to environmental technology field, the measurement mechanism of slurry pH value in especially a kind of absorption tower.
Background technology
In wet desulfurization system, pH value is important controling parameters.PH value directly has influence on the desulfuration efficiency of desulphurization system, the dissolving of lime stone, the oxidation of sulphite, the crystallization of gypsum, the corrosion of desulphurization system.In Practical Project, pH optimum value is between 5.2 ~ 5.6.
In wet desulfurization system, the general pH value adopting the online pH analyser of industry to measure slurries in slurry pool of absorption tower.In initial design, pH electrode is arranged on gypsum slurries slurry pump pipeline by pH value determinator, mainly there is Railway Project: one, the flow velocity of slurry pump pipeline is comparatively large, relatively more serious to the erosion failure of pH electrode, shortens the life-span of pH electrode; Two, slurry pump must run continuously, wastes energy, if stop transport, not only cannot carry out sampling and measuring to slurries, and electrode is also easy because of the dry and astringent damage without slurries soak.
Along with the development of desulfur technology, designer improves the mounting means of pH value determinator.In design in recent years, generally outside absorption tower, arrange a pH meter baffle-box, arrange an injection point in the bottom of baffle-box, baffle-box top arranges two pH electrode interfaces, and baffle-box top outer wall arranges an overflow slurry interface.Baffle-box is hollow, closed casing, and in absorption tower, slurries are entered by baffle-box bottom interface, and the flush connection through top outer wall flows into trench.In this mensuration absorption tower, the determinator of slurry pH value is too loaded down with trivial details, arranges pH meter baffle-box and adds financial cost, and installation baffle-box needs certain space.In operational process because pipeline and valve quantity more, operation inconvenience, valve and the easy blockage phenomenon of pH meter baffle-box interface.
By retrieval, find the patent publication us relevant to patented claim of the present invention, the application number of the document is " 201320028434.3 ", and name is called " a kind of absorption tower pH measurement mechanism ".This device is provided with slurry inlet pipeline and vertical measuring tube, the serum outlet pipeline under measuring tube side is provided with and is tilted to, measuring tube upper end joint flange and a pH electrode of level installation.Mainly there is following problem in pH value measurement mechanism in the publication: one, the interface on measurement mechanism and absorption tower is the pipeline that level is installed, and the measuring tube installing pH electrode is vertically install, and this mounting means easily causes horizontal interface line clogging; Two, a pH electrode can only be installed in measurement mechanism, not meet the principle of important parameter redundant configuration in desulfurization design; Three, pH value measuring tube does not establish wash-down water, safeguards inconvenient in operational process; Four, slurries flow direction is just to pH electrode, and slurry flow rate controls bad, is formed impact electrode.
By contrast, there are the different of essence in patented claim of the present invention and above-mentioned patent publication us.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of measurement mechanism measuring slurry pH value in absorption tower is provided, this device utilizes fluid mechanics principle work, using method is easy, plant investment is low, preferably resolve produced problem in existing mensuration pH value device, this determinator can be applied to all types absorption tower and measure in the process of slurry pH value in tower.
The object of the invention is to be achieved through the following technical solutions:
The measurement mechanism of slurry pH value in a kind of absorption tower, described device comprises oblique mouth piece, sample valve, rinse threeway, electrode threeway, pH electrode, electrode suppor, surplus valve, elbow, run-down pipe and rinse water valve, described one end of oblique mouth piece is connected with the lower part outlet of the slurry pool on absorption tower, be inclined upwardly in the horizontal direction and be arranged on the lateral wall of slurry pool, the other end of this oblique mouth piece, sample valve, rinse threeway, electrode threeway, surplus valve and elbow be connected successively inclined seal arrange, the other end of described elbow connects the run-down pipe arranged downwards, the other end of described flushing threeway is connected and arranges rinse water valve, described electrode threeway external seal arranges electrode suppor, this electrode suppor is arranged pH electrode, this pH electrode stretches in this electrode threeway,
Described oblique mouth piece, sample valve, flushing threeway, electrode threeway, surplus valve and the elbow be connected successively forms oblique measuring tube, the liquid level of described slurry pool is higher than the most significant end of oblique measuring tube, and the most significant end liquid level difference of the minimum liquid level of slurry pool and oblique measuring tube must be greater than the whole drag losseses of slurries by oblique measuring tube.
And the quantity of described electrode threeway is multiple, the quantity of described pH electrode and electrode suppor is multiple.
And the quantity of described electrode threeway is 2 that are connected in series, the quantity of described pH electrode and electrode suppor is also 2.
And the angle α of the lateral wall of described oblique interface and slurry pool is 45-60 °.
And, caliber 1-2 the grade larger with the caliber rinsing threeway than oblique mouth piece of described electrode threeway.
And the slurry flow rate of described electrode threeway is 0.5-1.0m/s.
And the described pH electrode position stretched in this electrode threeway is the position that this pH electrode can touch the liquid in this electrode threeway.
And the connected mode of described oblique mouth piece, sample valve, flushing threeway, electrode threeway, surplus valve, elbow and run-down pipe is for adopting Flange joint.
The advantage that the present invention obtains and good effect are:
1, apparatus of the present invention only arrange the pipe fittings such as pH electrode, pipeline and valve, because pipeline is compared with short and pipe fitting is few, the resistance of system is very little, oblique mouth piece is inclined upwardly setting, not easily blocking pipeline, in addition, slurry pH value is directly measured on pipeline, does not need the casing of the buffer memory slurries separately establishing sampling and measuring, occupied ground space is little, saved space, and this device is installed, and reduces the production cost of equipment simple, operation is convenient, not easily break down, operation maintenance is convenient, can be widely used in the mensuration of slurry pH value in all types absorbing tower.
2, apparatus of the present invention are provided with flushing of pipeline water valve, when this measurement mechanism is stopped transport, pH value can be made to measure pipeline and keep clean; Time stoppage in transit in absorption tower, close sample valve, rinse oblique measuring tube, after rinsing well, closing outflow valve, be full of clear water in the oblique measuring tube of pH, emptying absorption tower can not produce any impact to pH electrode.
3, the electrode threeway caliber of apparatus of the present invention is large; flow velocity is low, and the pH electrode position stretched in electrode threeway is the position that this pH electrode can touch the liquid in this electrode threeway, and built-in length is shorter; therefore in threeway, liquid washes away less to pH electrode, effectively protects pH electrode.
4, apparatus of the present invention in use, closing outflow valve, opens sample valve and rinse water valve, can also carry out back flush to oblique interface, and the serous granule thing avoiding the situations such as absorption tower stoppage in transit to cause is piled up, and causes measurement mechanism entrance to block; In absorption tower, slurry pool has normal level, and this pH determinator can measure normal pH value, need not restart other power-equipments.
Accompanying drawing explanation
Fig. 1 is the anatomical connectivity schematic diagram of pH value measurement mechanism of the present invention.
Embodiment
For accompanying drawing embodiment, the invention will be further described below, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The equipment used in the present invention, if no special instructions, is the common equipment in this area, the method used in the present invention, if no special instructions, is the conventional method in this area.
The measurement mechanism of slurry pH value in a kind of absorption tower, as shown in Figure 1, described device comprises oblique mouth piece 12, sample valve 11, rinse threeway 10, electrode threeway 9, pH electrode 5, electrode suppor 4, surplus valve 6, elbow 7, run-down pipe 8 and rinse water valve 3, one end of described oblique mouth piece is connected with the lower part outlet (not shown) of the slurry pool 13 on absorption tower 2, be inclined upwardly in the horizontal direction and be arranged on the lateral wall of slurry pool, the other end of this oblique mouth piece, sample valve, rinse threeway, electrode threeway, surplus valve and elbow be connected successively inclined seal arrange, the other end of described elbow connects the run-down pipe arranged downwards, overflow slurry is discharged by this run-down pipe, the other end of described flushing threeway is connected and arranges rinse water valve, this rinse water valve can connect the wash tub pipe (not shown) of rinsing whole device, described electrode threeway external seal arranges electrode suppor, this electrode suppor is arranged pH electrode, this pH electrode stretches in this electrode threeway, in the present embodiment, the described pH electrode position stretched in this electrode threeway is the position that this pH electrode can touch the liquid in this electrode threeway, this pH electrode is for detecting the pH value of the slurries flowed through in this electrode threeway, slurries and the pH electrode contact be arranged in threeway, the pH value of slurries can be measured,
Described oblique mouth piece, sample valve, flushing threeway, electrode threeway, surplus valve and the elbow be connected successively forms oblique measuring tube, the liquid level 1 of described slurry pool is higher than the most significant end of oblique measuring tube, and the most significant end liquid level difference of the minimum liquid level of slurry pool and oblique measuring tube must be greater than the whole drag losseses of slurries by oblique measuring tube, ensure that slurries can bottom-uply overflow.
The quantity of described electrode threeway can be multiple, and the quantity of described pH electrode and electrode suppor also can be multiple, and in the present embodiment, the quantity of described electrode threeway is 2 that are connected in series, and the quantity of described pH electrode and electrode suppor is also 2.
For the ease of repair and maintenance, in the present embodiment, the valve adopted in described pH value measurement mechanism, threeway, elbow and pipeline all pass through Flange joint.
The angle α of the lateral wall of described oblique interface and slurry pool can be 45-60 °, and in the present embodiment, the angle α of the lateral wall of described oblique interface and slurry pool is 60 °.
In absorption tower, slurry pool has normal level, and this pH determinator can measure normal pH value, need not restart other power-equipments.
In the present embodiment, described electrode threeway needs reducing, and caliber 1-2 the grade larger with the caliber rinsing threeway than oblique mouth piece of this electrode threeway, makes the slurry flow rate flowing through pH electrode reduce, be 0.5-1.0m/s, reduce the impact to pH electrode.
In absorption tower of the present invention, the using method of the measurement mechanism of slurry pH value is as follows:
When absorption tower is normally run, sample valve and surplus valve are opened, rinse water valve is closed, absorption tower slurries flow out from slurry pool, arrive through oblique mouth piece and sample valve and rinse threeway, slurries and the pH electrode contact be arranged in electrode threeway, can measure the pH value of slurries, the slurries measured are discharged by run-down pipe after flowing through surplus valve and elbow, such as, enter trench.
When absorption tower or this pH value determinator repair and maintenance, close sample valve, open rinse water valve and surplus valve, rinse stopple coupon and pH electrode, the water after flushing is discharged by run-down pipe, such as, enter trench.
Claims (8)
1. the measurement mechanism of slurry pH value in an absorption tower, it is characterized in that: described device comprises oblique mouth piece, sample valve, rinse threeway, electrode threeway, pH electrode, electrode suppor, surplus valve, elbow, run-down pipe and rinse water valve, described one end of oblique mouth piece is connected with the lower part outlet of the slurry pool on absorption tower, be inclined upwardly in the horizontal direction and be arranged on the lateral wall of slurry pool, the other end of this oblique mouth piece, sample valve, rinse threeway, electrode threeway, surplus valve and elbow be connected successively inclined seal arrange, the other end of described elbow connects the run-down pipe arranged downwards, the other end of described flushing threeway is connected and arranges rinse water valve, described electrode threeway external seal arranges electrode suppor, this electrode suppor is arranged pH electrode, this pH electrode stretches in this electrode threeway,
Described oblique mouth piece, sample valve, flushing threeway, electrode threeway, surplus valve and the elbow be connected successively forms oblique measuring tube, the liquid level of described slurry pool is higher than the most significant end of oblique measuring tube, and the most significant end liquid level difference of the minimum liquid level of slurry pool and oblique measuring tube must be greater than the whole drag losseses of slurries by oblique measuring tube.
2. the measurement mechanism of slurry pH value in absorption tower according to claim 1, it is characterized in that: the quantity of described electrode threeway is multiple, the quantity of described pH electrode and electrode suppor is multiple.
3. the measurement mechanism of slurry pH value in absorption tower according to claim 2, it is characterized in that: the quantity of described electrode threeway is 2 that are connected in series, the quantity of described pH electrode and electrode suppor is also 2.
4. the measurement mechanism of slurry pH value in absorption tower according to claim 1, is characterized in that: the angle α of the lateral wall of described oblique interface and slurry pool is 45-60 °.
5. the measurement mechanism of slurry pH value in absorption tower according to claim 1, is characterized in that: the caliber of described electrode threeway is than oblique mouth piece and rinse large 1-2 the grade of the caliber of threeway.
6. the measurement mechanism of slurry pH value in absorption tower according to claim 5, is characterized in that: the slurry flow rate of described electrode threeway is 0.5-1.0m/s.
7. the measurement mechanism of slurry pH value in absorption tower according to claim 1, is characterized in that: the described pH electrode position stretched in this electrode threeway is the position that this pH electrode can touch the liquid in this electrode threeway.
8. the measurement mechanism of slurry pH value in the absorption tower according to any one of claim 1 to 7, is characterized in that: the connected mode of described oblique mouth piece, sample valve, flushing threeway, electrode threeway, surplus valve, elbow and run-down pipe is for adopting Flange joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198293.3A CN104807856A (en) | 2015-04-23 | 2015-04-23 | Device for measuring pH value of seriflux in absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198293.3A CN104807856A (en) | 2015-04-23 | 2015-04-23 | Device for measuring pH value of seriflux in absorption tower |
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| CN104807856A true CN104807856A (en) | 2015-07-29 |
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| CN201510198293.3A Pending CN104807856A (en) | 2015-04-23 | 2015-04-23 | Device for measuring pH value of seriflux in absorption tower |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6488246A (en) * | 1987-09-30 | 1989-04-03 | Mitsubishi Heavy Ind Ltd | Method for measuring ph of absorbing slurry |
| CN101219334A (en) * | 2007-09-29 | 2008-07-16 | 北京朗新明环保科技有限公司 | Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower |
| CN201673137U (en) * | 2010-05-27 | 2010-12-15 | 上海龙净环保科技工程有限公司 | PH meter measuring device with flushing pipe |
| CN204649667U (en) * | 2015-04-23 | 2015-09-16 | 航天环境工程有限公司 | The measurement mechanism of slurry pH value in absorption tower |
-
2015
- 2015-04-23 CN CN201510198293.3A patent/CN104807856A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6488246A (en) * | 1987-09-30 | 1989-04-03 | Mitsubishi Heavy Ind Ltd | Method for measuring ph of absorbing slurry |
| CN101219334A (en) * | 2007-09-29 | 2008-07-16 | 北京朗新明环保科技有限公司 | Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower |
| CN201673137U (en) * | 2010-05-27 | 2010-12-15 | 上海龙净环保科技工程有限公司 | PH meter measuring device with flushing pipe |
| CN204649667U (en) * | 2015-04-23 | 2015-09-16 | 航天环境工程有限公司 | The measurement mechanism of slurry pH value in absorption tower |
Non-Patent Citations (1)
| Title |
|---|
| 聂鹏飞等: "湿法脱硫pH计安装方式的优化改进", 《黑龙江电力》 * |
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Application publication date: 20150729 |