Detection device for flue gas treatment slurry

Abstract

The utility model discloses a flue gas treatment slurry detection device which comprises a gas-liquid separator, a detection tank and a detection assembly installed on the detection tank, the input end of the gas-liquid separator is connected with a slurry pool, the gas output end of the gas-liquid separator is connected with a first input port in the upper side of the detection tank, and a second input port in the upper side of the detection tank is connected with a second input port in the lower side of the detection tank. A liquid output end of the gas-liquid separator is connected with a second input port in the lower side of the detection tank; a liquid outlet is further formed in one side of the detection tank, and an exhaust hole is formed in the top of the detection tank. The gas-liquid separator separates gas and liquid from the slurry, the separated liquid enters the detection tank through the second input port, and the slurry is detected through the detection assembly on the detection tank, so that the influence of the gas in the slurry on the detection result is avoided, and the detection accuracy is improved; the separated gas enters from a first input port in the upper side of the detection tank, and the gas and the slurry are discharged from a liquid outlet.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas treatment technical field, concretely relates to a detection device of desulfurization slurry. BACKGROUND

[0002] With environmental protection emission standard more and more strict, the national administration pollution intensity is unceasingly increased, the flue gas ultra -low emission reconstruction requirement of national introduction meets, SO2 emission concentration < 35mg / Nm 3 , particulate matter concentration < 5mg / Nm 3 , NO X Emission concentration < 50mg / Nm 3 .

[0003] Flue gas treatment slurry is the important medium of flue gas treatment, including desulfurization slurry and denitration slurry etc., and the commonly used slurry includes: limestone slurry, lime slurry etc. Flue gas treatment slurry is stored in slurry pool, is transported to the spraying system through slurry circulating pump, and after atomization, is contacted and reacts with flue gas countercurrent, reaches the effect of removing SO2, HCl, HF and other acid gases in flue gas.

[0004] Flue gas treatment slurry usually has specific physicochemical parameters, such as pH and slurry density. At present, the pH value and density of flue gas treatment slurry are generally set separately, and there is unreasonable setting, lack of corresponding flushing measures, which leads to serious wear and corrosion of related parts, inaccurate measurement, and adverse effects on the stability of flue gas treatment operation. INVENTION CONTENTS

[0005] In view of the above technical problems existing in the prior art, the utility model provides a detection device for flue gas treatment slurry, which improves the accuracy of flue gas treatment slurry measurement.

[0006] The utility model discloses a detection device for flue gas treatment slurry, including gas -liquid separator, detection jar and install detection subassembly on the detection jar, the input of gas -liquid separator is connected with slurry pool, and the gas output of gas -liquid separator is connected with the first input of detection jar upside, and the liquid output of gas -liquid separator is connected with the second input of detection jar downside, one side of the detection jar still is provided with the liquid discharge port, and the top is provided with the exhaust hole.

[0007] Preferably, the input end of the gas-liquid separator is provided with a manual valve and / or an electric valve.

[0008] Preferably, the gas output end of the gas-liquid separator is provided with a first valve, and the liquid output end is provided with a second valve.

[0009] Preferably, a liquid discharge valve is arranged on the liquid discharge port,

[0010] One end of the liquid discharge valve is connected with a trench.

[0011] Preferably, the detection assembly comprises any one of the following detection components or a combination thereof:

[0012] pH meter, differential pressure densimeter and temperature sensor.

[0013] Preferably, the side wall of the detection tank is provided with two groups of pH meters and differential pressure densimeters.

[0014] Preferably, it further comprises a flushing assembly, the flushing assembly comprising a water supply source and a third valve, one end of the third valve being connected with the water supply source and the other end being connected with the liquid output end of the gas-liquid separator.

[0015] Preferably, the flushing assembly further comprises a fourth valve, one end of the fourth valve being connected with the second input port and the other end being connected with the trench.

[0016] Preferably, the detection tank is a glass steel piece.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows: the gas-liquid separator separates gas and liquid from the slurry, the separated liquid is sent to the detection tank through the second input port, and the slurry is detected by the detection assembly on the detection tank, so as to avoid the influence of the gas in the slurry on the detection result and improve the accuracy of the detection; the separated gas enters from the first input port on the upper side of the detection tank, and the gas and the slurry are uniformly discharged from the liquid discharge port. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic structural view of the detection device for flue gas treatment slurry of the present application;

[0019] Figure 2 is a schematic view of the medium flow direction of the detection tank flushing.

[0020] Marked in the figure: 1 slurry pool, 2 manual valve, 21 first valve, 3 electric valve, 31 second valve, 32 third valve, 33 fourth valve, 4 gas-liquid separator, 5 detection tank, 51 liquid discharge port, 52 liquid discharge valve,

[0021] 6 detection assembly, 61 pH meter, 62 differential pressure densimeter, 8 trench, 9 water supply source. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] The utility model makes further detailed description in combination with the drawings:

[0024] The utility model discloses a flue gas treatment slurry's detection device, as shown in Figure 1 The input end of the gas-liquid separator 4 is connected with the slurry pool 1, the gas output end of the gas-liquid separator 4 is connected with the first input port on the upper side of the detection tank 5, and the liquid output end of the gas-liquid separator 4 is connected with the second input port on the lower side of the detection tank 5.

[0025] The gas-liquid separator 4 separates the gas from the slurry, the separated liquid is conducted to the detection tank 5 through the second input port, and the slurry is detected through the detection assembly 6 on the detection tank 5, so that the influence of the gas in the slurry on the detection result is avoided, and the accuracy of detection is improved; the separated gas enters from the first input port on the upper side of the detection tank 5, and the gas and the slurry are uniformly discharged from the liquid discharge port 51.

[0026] The foaming of the slurry can be separated from the slurry, only the slurry enters the densimeter tank, and the accuracy of pH value and density measurement is improved.

[0027] Preferably, the input end is provided with the manual valve 2 and the electric valve 3.

[0028] In the specific valve setting, the gas output end of the gas-liquid separator 4 is provided with the first valve 21, and the liquid output end is provided with the second valve 31.

[0029] The detection assembly 6 comprises any one of the following detection components or a combination thereof: a pH meter 61, a differential pressure densimeter 62 and a temperature sensor.

[0030] The detection tank 5 can adopt a glass steel piece (glass fiber reinforced plastic, FRP), has good corrosion resistance, and saves manufacturing cost. The pH and density measurement are integrated into one detection tank, the land occupation and the number of equipment are reduced, reasonable materials and measurement methods are adopted, the equipment can be automatically flushed according to the needs of the instrument during operation, the equipment maintenance cost and the labor cost are reduced, and therefore the construction cost and the operation cost of the system are reduced.

[0031] The utility model further includes a flushing assembly, Figure 2The arrow in the figure shows the flow direction of the flushing medium. The flushing assembly comprises a water supply source 9 and a third valve 32, one end of the third valve 32 being connected with the water supply source 9 and the other end being connected with the liquid output end of the gas-liquid separator 4. The flushing assembly further comprises a fourth valve 33, one end of the fourth valve 33 being connected with the second input port and the other end being connected with the ditch 8.

[0032] The detection device can be installed near the slurry pool of the wet desulfurization absorption tower, and is used for measuring the PH value and the density of the desulfurization slurry. The detection device comprises a gas-liquid separator, a density meter tank, valves (electric valves and manual valves), a pH meter and a density meter, and connected pipelines, a flushing assembly and a drainage system. The PH value measurement and the density measurement (differential pressure measurement) of the desulfurization slurry are integrated into one device system and can be accurately and stably measured, and the device system can be automatically operated, thereby saving time and effort and providing help for stable operation of the desulfurization system. The electric valves or pneumatic valves are configured, so that automatic control of detection and flushing can be realized. More specifically, according to the flushing requirements of the pH meter and the density meter, the corresponding electric valves are started and stopped to achieve automatic flushing.

[0033] The pipelines with corresponding diameters and materials are used to connect the various components according to the production and operation requirements, so that the whole system can be stably operated.

[0034] The utility model discloses further include DCS system, DCS system respectively with each electric valve and detection assembly connection. DCS system is used for receiving detection data, control electric valve 3, second valve 31, third valve 32 and fourth valve 33, and DCS system is prior art and the utility model discloses no more.

[0035] In the normal working mode, part of the slurry in the slurry pool 1 enters the gas-liquid separator 4 in sequence through the manual valve and the electric valve 3, the separated gas bubbles / gas enter the density meter tank 5 through the first valve 21 and are discharged from the gas discharge hole and the gas discharge pipe at the top of the density meter tank 5, and the separated slurry flows out from the bottom of the gas-liquid separator 4, enters the density meter tank 5 through the electric second valve 31, fills the cavity of the density meter tank 5 and keeps flowing in the normal operation, then flows out from the liquid discharge port 51 of the density meter tank 5, enters the ditch 8 through the liquid discharge valve 52 and is discharged. In this process, the pH meter and the differential pressure density meter installed on the side wall of the detection tank 5 complete data measurement, in order to keep the accuracy of measurement, two sets of pH meters and differential pressure density meters should be arranged, and the measured signals can be transmitted to the DCS system. The flow of the gas bubbles and the slurry is realized through the pipelines connected between the devices.

[0036] In the normal operation, the electric valve 3 and the electric second valve 31 are opened, the electric third valve 32 and the fourth valve 33 are closed, and the other manual valves are in the opened state, the slurry flows in the direction shown by the arrow. Figure 1 ​

[0037] In order to ensure the accuracy of the instrument measurement, prolong the service life of the instrument probe, the pH meter and the differential pressure densimeter probe need to be washed regularly, and the washing logic can be controlled by the DCS system.

[0038] When entering the washing process, the third 32 and the second valve 31 are opened, the electric valve 3 is closed, the fourth valve 33 is closed during washing, is opened to vent after washing, and finally the third valve 32 is closed to end the washing. Then the fourth valve 33 is closed to enter the normal working mode. The washing water flows in the direction of the arrow. Figure 2

[0039] The gas-liquid separator and the density meter tank in the system are made of FRP material, and the pipeline is also made of FRP material. The pipe diameter is different according to the needs of the equipment, and finally meets the system parameter requirements.

[0040] Finally, the whole pH and density measurement system runs continuously in the normal working mode and the washing mode, which is controlled by the DCS according to the logic, and does not need human operation, which saves time and effort. That is, the accuracy of the measurement value is ensured, and the service life of the equipment is prolonged.

[0041] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.​

Claims

1. A detection device for a flue gas treatment slurry, characterized in that The device comprises a gas-liquid separator (4), a detection tank (5), and a detection assembly (6) installed on the detection tank (5), The input end of the gas-liquid separator (4) is connected with a pulp tank (1), The gas output end of the gas-liquid separator (4) is connected with a first input port on the upper side of the detection tank (5), and the liquid output end of the gas-liquid separator (4) is connected with a second input port on the lower side of the detection tank (5). The detection tank (5) is further provided with a liquid discharge port (51) on one side and a gas discharge hole on the top.

2. The detection device of claim 1, wherein, The input end of the gas-liquid separator (4) is provided with a manual valve (2) and / or an electric valve (3).

3. The detection device of claim 1, wherein, The gas output end of the gas-liquid separator (4) is provided with a first valve (21), and the liquid output end is provided with a second valve (31).

4. The detection device of claim 1, wherein, The liquid discharge port (51) is provided with a liquid discharge valve (52), One end of the liquid discharge valve (52) is connected with a trench (8).

5. The detection device of claim 1, wherein, The detection assembly comprises any one of the following detection components or a combination thereof: a pH meter (61), a differential pressure densimeter (62), and a temperature sensor.

6. The detection device of claim 5, wherein, The side wall of the detection tank (5) is provided with two groups of pH meters and two groups of differential pressure densimeters.

7. The detection device of claim 1, wherein, The device further comprises a flushing assembly, which comprises a water supply source (9) and a third valve (32), one end of the third valve (32) being connected with the water supply source (9) and the other end being connected with the liquid output end of the gas-liquid separator (4).

8. The detection device of claim 7, wherein, The flushing assembly further comprises a fourth valve (33), one end of the fourth valve (33) being connected with the second input port and the other end being connected with the trench (8).

9. The detection device of claim 1, wherein, The detection tank is a glass steel piece.

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