CN103336087A - Testing device of desulphurization efficiency and testing method thereof - Google Patents

Abstract

The invention relates to a testing device of the desulphurization efficiency and a testing method thereof. The testing device comprises a buffering bottle, an SO2 absorbing bottle I, an absorbing system A and an absorbing system B. The testing method comprises the following steps of: adding alkaline solution with same volume V into all the SO2 absorbing bottles, introducing the same amount of SO2 gas to enable the absorbing system A to absorb and test PH values of testing liquid in all the SO2 absorbing bottles, and calculating the molar weight of the SO2 absorbed by the absorbing system A; and then introducing the same amount of SO2 gas to enable the absorbing system B to absorb and test PH values of testing liquid in all the SO2 absorbing bottles, calculating the molar weight of SO2 absorbed by the absorbing system B, and calculating the desulfurization efficiency. The testing device has the advantages that the structure is simple, and the operation is easy; the two absorbing systems are utilized for respectively absorbing the SO2 gas, the total amount of the absorbed SO2 and the amount of SO2 absorbed by limestone slurry are measured by a PH meter, the desulphurization efficiency of the limestone slurry is tested, the experimental data is accurate and reliable, the experimental steps are simplified, and the experimental cost is lowered.

Description

A kind of desulfuration efficiency proving installation and method of testing thereof

Technical field

The present invention relates to the waste gas purification field, be specifically related to a kind of desulfuration efficiency proving installation and method of testing thereof.

Background technology

At present, often need the desulfuration efficiency of lime stone slurry in the test desulphurization system in some tests, common method adopts flue gas analyzer to measure in the desulphurization system exactly and imports and exports SO ₂Concentration, calculate the desulfuration efficiency of desulphurization system; Perhaps absorb SO with lime stone slurry bottle and a plurality of bubbling absorption bottle ₂, measure sulphion in the bubbling absorption bottle with chemical analysis method then, calculate the SO of absorption again ₂Total SO of molar weight and feeding ₂Molar weight.

If the SO that adopts the method for flue gas analyzer measurement then need to guarantee to grow ₂The feeding time could guarantee to import and export flue gas analyzer and measure required enough exhaust gas volumns in desulphurization system, this method of testing need consume more SO ₂Gas, flue gas analyzer price comparison costliness needs the cost height that drops in addition; Adopt the method for test chemical then to need more chemical reagent, the test chemical complicated operation influences test findings easily simultaneously, causes the inaccurate of desulfuration efficiency test.

Summary of the invention

In view of this, the purpose of this invention is to provide a kind of desulfuration efficiency proving installation and method of testing thereof, overcome above-mentioned weak point, it is simple in structure, operates simple and easyly, can test out the desulfuration efficiency of lime stone slurry accurately.

The invention discloses a kind of desulfuration efficiency proving installation, comprise surge flask, SO ₂Absorption bottle I, A absorption system and B absorption system;

Described A absorption system comprises SO ₂Absorption bottle II and SO ₂The absorption bottle III, described SO ₂The absorption bottle II is provided with the draft tube I, described SO ₂The absorption bottle III is provided with the gas outlet I, described SO ₂Absorption bottle II and SO ₂The absorption bottle III is communicated with by the connecting pipe I;

Described B absorption system comprises lime stone slurry bottle, SO ₂Absorption bottle IV and SO ₂The absorption bottle V, described lime stone slurry bottle is provided with the draft tube II, described SO ₂The absorption bottle V is provided with the gas outlet II, described lime stone slurry bottle and SO ₂The absorption bottle IV is communicated with by the connecting pipe II, described SO ₂Absorption bottle IV and SO ₂The absorption bottle V is communicated with by the connecting pipe III;

Described surge flask is provided with SO ₂Input pipe and SO ₂Efferent duct, described SO ₂The absorption bottle I is provided with draft tube III and gas outlet III, described draft tube I, draft tube II and draft tube III respectively with SO ₂Efferent duct is communicated with;

Described draft tube I is provided with the valve I, and described draft tube II is provided with the valve II, and described draft tube III is provided with the valve III.

Further, described SO ₂Input pipe is provided with flowrate control valve.

Further, described lime stone slurry bottle is provided with for the magnetic stirring apparatus that stirs slurries.

The invention also discloses a kind of desulfuration efficiency method of testing, may further comprise the steps:

1) toward all SO ₂Absorption bottle is interior to add identical equivalent alkalescence test solution, and capacity V milliliter and the pH value a of survey record alkalescence test solution, controls the SO of certain flow again ₂Gas enters surge flask, and opens the valve III and make SO ₂Gas passes through SO ₂The absorption bottle I is discharged;

2) valve-off III is opened the valve I simultaneously, makes SO ₂Gas enters the A absorption system, and valve-off I behind the maintenance 10min is opened the valve III, keeps measuring SO behind the 5min ₂The pH value b of alkaline test solution in the absorption bottle II ₁, measure SO ₂The pH value b of alkaline test solution in the absorption bottle III ₂

3) valve-off III is opened the valve II simultaneously, makes SO ₂Gas enters the B absorption system, and valve-off II behind the maintenance 10min is opened the valve III, keeps measuring SO behind the 5min ₂The pH value d of alkaline test solution in the absorption bottle IV ₁, measure SO ₂The pH value d of alkaline test solution in the absorption bottle V ₂

4) adopt following method to obtain desulfuration efficiency: according to formula:

$C_1=\frac{(2\×{10}^{-(14-a)}-{10}^{-(14-b_1)}-{10}^{-(14-b_2)})\×V}{1000\×2}$

Try to achieve the SO that the A absorption system absorbs ₂Molar weight C ₁, again according to formula:

${\mathrm{<figure-callout\; id="2"\; label="C"\; filenames="HDA00003318977800011.png"\; state="\{\{state\}\}">C</figure-callout>}}_2=\frac{(2\&times;{10}^{-(14-a)}-{10}^{-(14-d_1)}-{10}^{-(14-d_2)})\&times;V}{1000\&times;2}$

Obtain the SO that the B absorption system absorbs ₂Molar weight C ₂, again according to formula:

$\mathrm{\&eta;}=\frac{(C_1-C_2)}{C_1}\&times;100\%$

Obtain the desulfuration efficiency η of lime stone slurry bottle.

Beneficial effect of the present invention is: a kind of desulfuration efficiency proving installation of the present invention and method of testing thereof, and earlier at SO ₂Add alkaline test solution and test record capacity pH value with a kind of same capability in the absorption bottle, in device, feed a certain amount of SO again ₂Gas makes the A absorption system absorb the back and tests each SO of A absorption system ₂Test solution pH value in the absorption bottle calculates the SO that the A absorption system absorbs according to formula ₂Molar weight; In device, feed with the SO that measures again ₂Gas makes the B absorption system absorb back and each SO of test b absorption system ₂Test solution pH value in the absorption bottle calculates the SO that the B absorption system absorbs according to formula ₂Molar weight calculates desulfuration efficiency according to formula at last again.The present invention is simple in structure, and processing ease utilizes two absorption systems to absorb SO respectively ₂Gas utilizes PH to measure the SO of absorption ₂Total amount and the SO that is absorbed by lime stone slurry ₂Amount, test out the desulfuration efficiency of lime stone slurry, experimental data has been simplified experimental procedure accurately and reliably, has reduced experimental cost.

Description of drawings

For the purpose, technical scheme and the advantage that make invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is structural representation of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.

As shown in the figure, a kind of desulfuration efficiency proving installation of the present invention comprises surge flask 1, SO ₂ Absorption bottle I 2, A absorption system and B absorption system;

Described A absorption system comprises SO ₂Absorption bottle II 3 and SO ₂Absorption bottle III 4, described SO2 absorption bottle II 3 is provided with draft tube I 5, described SO ₂Absorption bottle III 4 is provided with gas outlet I 6, described SO ₂Absorption bottle II 3 and SO ₂Absorption bottle III 4 is communicated with by connecting pipe I 7;

Described B absorption system comprises lime stone slurry bottle 8, SO ₂Absorption bottle IV 9 and SO ₂ Absorption bottle V 10, described lime stone slurry bottle 8 is provided with draft tube II 11, described SO ₂ Absorption bottle V 10 is provided with gas outlet II 12, described lime stone slurry bottle 8 and SO ₂Absorption bottle IV 9 is communicated with described SO by connecting pipe II 13 ₂Absorption bottle IV 9 and SO ₂Absorption bottle V 10 is communicated with by connecting pipe III 14;

Described surge flask 1 is provided with SO ₂Input pipe 15 and SO ₂ Efferent duct 16, described SO ₂Absorption bottle I 2 is provided with draft tube III 17 and gas outlet III 18, described draft tube I 5, draft tube II 11 and draft tube III 17 respectively with SO ₂ Efferent duct 16 is communicated with;

Described draft tube I 5 is provided with valve I 19, and described draft tube II 11 is provided with valve II 20, and described draft tube III 17 is provided with valve III 21, controls SO respectively ₂The SO of absorption bottle I 2, A absorption system and B absorption system ₂Gas feeds.

In the present embodiment, described SO ₂Input pipe 15 is provided with flowrate control valve 22, can control accurately to feed SO ₂The flow of gas.

In the present embodiment, described lime stone slurry bottle 8 is provided with for the magnetic stirring apparatus 23 that stirs slurries, prevents the limestone slurry liquid precipitate, influences absorption efficiency.

A kind of method of using desulfuration efficiency proving installation of the present invention to carry out the desulfuration efficiency test may further comprise the steps:

1) toward all SO ₂Absorption bottle is interior to add identical equivalent alkalescence test solution, and capacity V milliliter and the pH value a of survey record alkalescence test solution, controls the SO of certain flow again ₂Gas enters surge flask 1, and opens valve III 21 and make SO ₂Gas passes through SO ₂Absorption bottle I 2 is discharged;

2) the valve-off III 21, open valve I 19 simultaneously, make SO ₂Gas enters the A absorption system, and valve-off I 19 behind the maintenance 10min is opened valve III 21, keeps measuring SO behind the 5min ₂The pH value b of alkaline test solution in the absorption bottle II 3 ₁, measure SO ₂The pH value b of alkaline test solution in the absorption bottle III 4 ₂

3) the valve-off III 21, open valve II 20 simultaneously, make SO ₂Gas enters the B absorption system, and valve-off II 20 behind the maintenance 10min is opened valve III 21, keeps measuring SO behind the 5min ₂The pH value d of alkaline test solution in the absorption bottle IV 9 ₁, measure SO ₂The pH value d of alkaline test solution in the absorption bottle V 10 ₂

4) adopt following method to obtain desulfuration efficiency: according to formula:

$C_1=\frac{(2\&times;{10}^{-(14-a)}-{10}^{-(14-b_1)}-{10}^{-(14-b_2)})\&times;V}{1000\&times;2}---\left(1\right)$

Try to achieve the SO that the A absorption system absorbs ₂Molar weight C ₁, again according to formula:

${\mathrm{<figure-callout\; id="2"\; label="C"\; filenames="HDA00003318977800011.png"\; state="\{\{state\}\}">C</figure-callout>}}_2=\frac{(2\&times;{10}^{-(14-a)}-{10}^{-(14-d_1)}-{10}^{-(14-d_2)})\&times;V}{1000\&times;2}---\left(2\right)$

Obtain the SO that the B absorption system absorbs ₂Molar weight C ₂, again according to formula:

$\mathrm{\&eta;}=\frac{(C_1-C_2)}{C_1}\&times;100\%---\left(3\right)$

Obtain the desulfuration efficiency η of lime stone slurry bottle.

Come beneficial effect of the present invention is described with one group of experimental data below:

Take by weighing lime stone 20g, be mixed with 400 milliliters of lime stone slurries and add in the lime stone slurry bottle, open magnetic stirring apparatus, stir the slurries in the lime stone slurry bottle, the control temperature is 35 degree.Configuration 20% NaOH solution is 12.98 with the pH value a of PH instrumentation amount NaOH solution, more past each SO ₂The NaOH solution that adds 200 milliliters in the absorption bottle.

By the control flowrate control valve, in device, import stable SO ₂Gas makes SO respectively ₂Gas enters into A absorption system and B absorption system.Absorb SO through A absorption system and B absorption system ₂Behind the gas, with SO in the PH instrumentation amount A absorption system ₂Absorption bottle II and SO ₂The pH value b of absorption bottle III ₁And b ₂Be respectively 7.23 and 12.98, obtain the SO that the A absorption system absorbs in the substitution formula (1) ₂Molar weight $C_1=\frac{(2\&times;{10}^{-(14-12.98)}-{10}^{-(14-7.23)}-{10}^{-(14-12.98)}\&times;200)}{1000\&times;2}=0.00955;$ With SO in the PH instrumentation amount B absorption system ₂Absorption bottle IV and SO ₂The pH value d of absorption bottle V ₁And d ₂Be respectively 12.92 and 12.98, obtain the SO that the B absorption system absorbs in the substitution formula (2) ₂ Molar weight $C_{}$ ${}_2=\frac{(2\&times;{10}^{-(14-12.98)}-{10}^{-(14-12.92)}-{10}^{-(14-12.98)}\&times;200)}{1000\&times;2}=0.001232;$ With the C that tries to achieve ₁And C ₂Obtain the desulfuration efficiency of lime stone slurry bottle in the substitution formula (3) $\mathrm{\&eta;}=\frac{(0.00955-0.001232)}{0.00955}\&times;100\%=97.09\%$

Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.

Claims (4)

1. a desulfuration efficiency proving installation is characterized in that: comprise surge flask, SO ₂Absorption bottle I, A absorption system and B absorption system;

Described A absorption system comprises SO ₂Absorption bottle II and SO ₂The absorption bottle III, described SO ₂The absorption bottle II is provided with the draft tube I,

Described SO ₂The absorption bottle III is provided with the gas outlet I, described SO ₂Absorption bottle II and SO ₂The absorption bottle III is communicated with by the connecting pipe I;

Described B absorption system comprises lime stone slurry bottle, SO ₂Absorption bottle IV and SO ₂The absorption bottle V, described lime stone slurry bottle is provided with the draft tube II, described SO ₂The absorption bottle V is provided with the gas outlet II, described lime stone slurry bottle and SO ₂The absorption bottle IV is communicated with by the connecting pipe II, described SO ₂Absorption bottle IV and SO ₂The absorption bottle V is communicated with by the connecting pipe III;

Described surge flask is provided with SO ₂Input pipe and SO ₂Efferent duct, described SO ₂The absorption bottle I is provided with draft tube III and gas outlet III,

Described draft tube I, draft tube II and draft tube III respectively with SO ₂Efferent duct is communicated with;

Described draft tube I is provided with the valve I, and described draft tube II is provided with the valve II, and described draft tube III is provided with the valve III.

2. a kind of desulfuration efficiency proving installation according to claim 1 is characterized in that: described SO ₂Input pipe is provided with flowrate control valve.

3. a kind of desulfuration efficiency proving installation according to claim 1 is characterized in that: described lime stone slurry bottle is provided with for the magnetic stirring apparatus that stirs slurries.

4. a right to use requires 1 to 3 any described desulfuration efficiency proving installation to carry out the method for desulfuration efficiency test, it is characterized in that: may further comprise the steps:

1) toward all SO ₂Absorption bottle is interior to add identical equivalent alkalescence test solution, and capacity V milliliter and the pH value a of survey record alkalescence test solution, controls the SO of certain flow again ₂Gas enters surge flask, and opens the valve III and make SO ₂Gas passes through SO ₂The absorption bottle I is discharged;

2) valve-off III is opened the valve I simultaneously, makes SO ₂Gas enters the A absorption system, and valve-off I behind the maintenance 10min is opened the valve III, keeps measuring SO behind the 5min ₂The pH value b of alkaline test solution in the absorption bottle II ₁, measure SO ₂The pH value b of alkaline test solution in the absorption bottle III ₂

3) valve-off III is opened the valve II simultaneously, makes SO ₂Gas enters the B absorption system, and valve-off II behind the maintenance 10min is opened the valve III, keeps measuring SO behind the 5min ₂The pH value d of alkaline test solution in the absorption bottle IV ₁, measure SO ₂The pH value d of alkaline test solution in the absorption bottle V ₂

4) adopt following method to obtain desulfuration efficiency: according to formula:

$C_1=\frac{(2\&times;{10}^{-(14-a)}-{10}^{-(14-b_1)}-{10}^{-(14-b_2)})\&times;V}{1000\&times;2}$

Try to achieve the SO that the A absorption system absorbs ₂Molar weight C ₁, again according to formula:

$C_2=\frac{(2\&times;{10}^{-(14-a)}-{10}^{-(14-d_1)}-{10}^{-(14-d_2)})\&times;V}{1000\&times;2}$

Obtain the SO that the B absorption system absorbs ₂Molar weight C ₂, again according to formula:

$\mathrm{\&eta;}=\frac{(C_1-C_2)}{C_1}\&times;100\%$

Obtain the desulfuration efficiency η of lime stone slurry bottle.

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