On-line analyzer for sulfur recovery tail gas

Abstract

The utility model relates to the technical field of tail gas analyzers, in particular to a sulfur recovery tail gas on-line analyzer which comprises an on-line analyzer main body, a water blocking filter is fixed on one side of the on-line analyzer main body, and a gas inlet pipe and a gas outlet pipe extending into a measuring gas chamber in the on-line analyzer main body are fixed on the water blocking filter. A first one-way valve is installed on the air inlet pipe, a second one-way valve is installed on the air outlet pipe, an air cylinder is fixed to the top of the water blocking filter, a piston rod extending into the water blocking filter is installed at the output end of the air cylinder, a piston movably clamped into the water blocking filter is fixed to the piston rod, and a barrel is rotationally arranged on the bottom wall in the water blocking filter. According to the sulfur recovery tail gas online analyzer, the water blocking filter is filled with swelling cotton allochroic silicagel, and the swelling cotton and the allochroic silicagel are located below the piston, so that the measuring gas chamber of the analyzer can be effectively protected, and the problem that the measuring gas chamber is damaged due to the fact that water often enters the sulfur recovery tail gas online analyzer is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas analyzers, in particular to an on-line analyzer for sulfur recovery tail gas. Background Technique

[0002] Whether the on-line analyzer can operate stably for a long period depends on whether the pretreatment device can thoroughly process the sample gas, including the humidity, temperature, pressure, flow rate, dust, etc. of the sample. The on-line analyzer for sulfur recovery tail gas often has water in the gas chamber due to incomplete pretreatment of water removal. The measuring gas chamber needs to be replaced about every three months. The cost of the measuring gas chamber is very high. If the problem of water entering the gas chamber is not completely solved, even if more measuring gas chambers are replaced, it will be of no avail and only increase waste.

[0003] The on-line analyzer for sulfur recovery tail gas mainly measures NO and SO2. The measuring gas chambers for NO and SO2 have extremely high requirements for the absolute smoothness of the inner wall. As long as water enters and there are residual water stains on the inner wall, the measurement results will be inaccurate. For this reason, we propose an on-line analyzer for sulfur recovery tail gas to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an on-line analyzer for sulfur recovery tail gas to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An on-line analyzer for sulfur recovery tail gas, including an on-line analyzer main body. One side of the on-line analyzer main body is fixed with a water-blocking filter. An air inlet pipe and an air outlet pipe extending into the interior of the measuring gas chamber in the on-line analyzer main body are fixed on the water-blocking filter. A first one-way valve is installed on the air inlet pipe, and a second one-way valve is installed on the air outlet pipe. A cylinder is fixed on the top of the water-blocking filter. The output end of the cylinder is provided with a piston rod extending into the interior of the water-blocking filter. A piston that is movably clamped in the interior of the water-blocking filter is fixed on the piston rod. A cylinder body is rotatably arranged on the inner bottom wall of the water-blocking filter. The piston rod is movably inserted into the interior of the cylinder body. A plurality of paddle pieces are fixed on the outer peripheral wall of the cylinder body. The interior of the water-blocking filter is filled with swelling cotton and discoloring silica gel, and the swelling cotton and discoloring silica gel are located below the piston;

[0007] The piston rod and the cylinder body are cooperatively connected through a linkage structure. During the up and down movement of the piston rod, the cylinder body is driven to rotate clockwise and counterclockwise reciprocally.

[0008] An on-line analyzer for sulfur recovery tail gas as described above: The water-blocking filter is made of transparent glass or transparent plastic material.

[0009] An on-line analyzer for sulfur recovery tail gas as described above: The outer diameter of the piston is adapted to the inner diameter of the water-blocking filter, and a sealing ring is fixedly adhered to the outer peripheral wall of the piston.

[0010] An on-line analyzer for sulfur recovery tail gas as described above: A plurality of the paddles are circumferentially and vertically arrayed at equal angles on the outer peripheral wall of the cylinder.

[0011] An on-line analyzer for sulfur recovery tail gas as described above: An inspection door is fixedly installed on the water-blocking filter through bolts.

[0012] An on-line analyzer for sulfur recovery tail gas as described above: The linkage structure includes a spiral groove opened on the piston rod and a ball that is movably embedded and clamped on the inner wall of the cylinder body. The ball is movably clamped in the spiral groove and can roll along the track where the spiral groove is located.

[0013] An on-line analyzer for sulfur recovery tail gas as described above: A sealing ring adhered to the inner wall of the top opening of the cylinder body is provided at the fitting gap between the top opening of the cylinder body and the piston rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing a water-blocking filter on one side of the main body of the on-line analyzer, swelling cotton and discoloring silica gel are added to the water-blocking filter. The air cylinder is started to drive the piston rod to move upward, driving the piston to move upward, the internal pressure of the water-blocking filter decreases, and the sulfur recovery tail gas is sucked into the water-blocking filter through the intake pipe. Then the air cylinder drives the piston rod to move downward, driving the piston to move downward to push the sulfur recovery tail gas sucked into the water-blocking filter into the outlet pipe, and enters the measurement gas chamber in the main body of the on-line analyzer through the outlet pipe for on-line analysis of the tail gas.

[0015] (1) In the present utility model, by adding swelling cotton and discoloring silica gel to the water-blocking filter, when there is water in the tail gas entering the water-blocking filter, it will combine with the swelling cotton, and the swelling of the swelling cotton will prevent the water vapor from flowing through the outlet pipe and entering the main body of the on-line analyzer. And when there is water in the tail gas, it will react with the discoloring silica gel, which is convenient for the inspection personnel to detect the discoloration during the inspection and thus judge the entry of water vapor, and it is convenient to replace the swelling cotton and discoloring silica gel in the water-blocking filter in time. The cost is low, and at the same time, the measurement gas chamber of the analyzer is effectively protected, solving the problem that the on-line analyzer for sulfur recovery tail gas often enters water and damages the measurement gas chamber.

[0016] (2) In the present utility model, by rotatably arranging a cylinder body on the inner bottom wall of the water-blocking filter, paddles are installed on the cylinder body, and when the piston rod moves up and down, it will drive the cylinder body to rotate, thereby driving the paddles to rotate, which can stir and disperse the swelling cotton and discoloring silica gel in the water-blocking filter, facilitating the full combination and reaction of the swelling cotton and discoloring silica gel with the water vapor, improving the effect of the swelling cotton in preventing water vapor and being beneficial to the full reaction of the water in the tail gas with the discoloring silica gel, making the discoloring effect more obvious. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of an on-line analyzer for sulfur recovery tail gas.

[0018] Figure 2 It is a schematic diagram of the structure of removing the main body of the on-line analyzer of an on-line analyzer for sulfur recovery tail gas.

[0019] Figure 3 It is Figure 2 a schematic diagram of the structure after partial section of the water-blocking filter.

[0020] Figure 4 It is a schematic diagram of the linkage structure of an on-line analyzer for sulfur recovery tail gas.

[0021] In the figure: 1. Main body of the on-line analyzer; 2. Water-blocking filter; 3. Inlet pipe; 4. First one-way valve; 5. Outlet pipe; 6. Second one-way valve; 7. Cylinder; 8. Piston rod; 9. Piston; 10. Cylinder body; 11. Paddle; 12. Spiral groove; 13. Ball. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Please refer to Figures 1 to 4 , as an embodiment of the present invention, an on-line analyzer for sulfur recovery tail gas includes a main body 1 of the on-line analyzer. A water-blocking filter 2 is fixed on one side of the main body 1 of the on-line analyzer. An inlet pipe 3 and an outlet pipe 5 extending into the internal measurement chamber of the main body 1 of the on-line analyzer are fixed on the water-blocking filter 2. A first one-way valve 4 is installed on the inlet pipe 3, and a second one-way valve 6 is installed on the outlet pipe 5. A cylinder 7 is fixed on the top of the water-blocking filter 2. A piston rod 8 extending into the interior of the water-blocking filter 2 is installed at the output end of the cylinder 7. A piston 9 movably clamped inside the water-blocking filter 2 is fixed on the piston rod 8. A cylinder body 10 is rotatably arranged on the inner bottom wall of the water-blocking filter 2. A plurality of paddles 11 are fixed on the outer peripheral wall of the cylinder body 10. The interior of the water-blocking filter 2 is filled with swelling cotton and discoloring silica gel, and the swelling cotton and discoloring silica gel are located below the piston 9;

[0024] The piston rod 8 and the cylinder body 10 are connected and matched through a linkage structure. During the up and down movement of the piston rod 8, the cylinder body 10 is driven to rotate clockwise and counterclockwise reciprocally.

[0025] In this embodiment, the starting cylinder 7 drives the piston rod 8 to move upward, driving the piston 9 to move upward. The internal pressure of the water-blocking filter 2 decreases, and the sulfur recovery tail gas is sucked into the internal part of the water-blocking filter 2 through the intake pipe 3. Then, the cylinder 7 drives the piston rod 8 to move downward, driving the piston 9 to move downward to push the sulfur recovery tail gas sucked into the internal part of the water-blocking filter 2 into the outlet pipe 5, and enter the measuring gas chamber in the on-line analyzer main body 1 through the outlet pipe 5 for on-line analysis of the tail gas. By adding swelling cotton and discoloring silica gel in the water-blocking filter 2, when there is water in the tail gas entering the water-blocking filter 2, it will combine with the swelling cotton. The swelling of the swelling cotton will prevent the water vapor from flowing through the outlet pipe 5 and entering the on-line analyzer main body 1. And when there is water in the tail gas, it will react with the discoloring silica gel, which is convenient for the inspection personnel to find the discoloration during the inspection so as to judge the entry of water vapor, and it is convenient to replace the swelling cotton and discoloring silica gel in the water-blocking filter 2 in time. When the piston rod 8 moves up and down, it will drive the cylinder body 10 to rotate, thereby driving the paddle 11 to rotate, and can stir and disperse the swelling cotton and discoloring silica gel in the water-blocking filter 2.

[0026] As a further solution of the present utility model, the water-blocking filter 2 is made of transparent glass or transparent plastic material.

[0027] In this embodiment, it is convenient for the inspection personnel to directly check the discoloration of the discoloring silica gel inside the water-blocking filter 2.

[0028] As a further solution of the present utility model, the outer diameter of the piston 9 is adapted to the inner diameter of the water-blocking filter 2, and a sealing ring is fixedly adhered to the outer peripheral wall of the piston 9.

[0029] In this embodiment, it is avoided that the gas affects the normal use of the piston 9 through the gap between the piston 9 and the water-blocking filter 2.

[0030] As a further solution of the present utility model, a plurality of paddles 11 are distributed on the outer peripheral wall of the cylinder body 10 in an equal-angle circumferential and vertical array.

[0031] In this embodiment, the cylinder body 10 rotates, thereby driving the paddle 11 to rotate, and can stir and disperse the swelling cotton and discoloring silica gel in the water-blocking filter 2.

[0032] As a further solution of the present utility model, a maintenance door is fixedly installed on the water-blocking filter 2 through bolts.

[0033] In this embodiment, it is convenient to open the maintenance door to replace the swelling cotton and discoloring silica gel inside the water-blocking filter 2.

[0034] As a further solution of the present utility model, the linkage structure includes a spiral groove 12 opened on the piston rod 8 and a ball 13 movably embedded and clamped on the inner wall of the cylinder body 10. The ball 13 is movably clamped in the spiral groove 12 and can roll along the track where the spiral groove 12 is located.

[0035] In this embodiment, when the piston rod 8 moves up and down, the ball 13 embedded in the cylinder 10 rolls in the spiral groove 12, which can drive the cylinder 10 to rotate.

[0036] As a further solution of the present utility model, a sealing ring adhered to the inner wall of the top opening of the cylinder 10 is provided at the mating clearance between the top opening of the cylinder 10 and the piston rod 8.

[0037] In this embodiment, it is avoided that the swelling cotton, the discoloring silica gel and the water vapor enter the cylinder 10 through the mating clearance between the top opening of the cylinder 10 and the piston rod 8, causing blockage and corrosion inside the cylinder 10.

[0038] The working principle of the present utility model is as follows: By providing a water-blocking filter 2 on one side of the main body 1 of the on-line analyzer, swelling cotton and discoloring silica gel are added inside the water-blocking filter 2. The air cylinder 7 is started to drive the piston rod 8 to move upward, driving the piston 9 to move upward. The internal pressure of the water-blocking filter 2 decreases. The first one-way valve 4 is a one-way intake valve, and the sulfur recovery tail gas is sucked into the water-blocking filter 2 through the intake pipe 3. Then the air cylinder 7 drives the piston rod 8 to move downward, driving the piston 9 to move downward, and pushing the sulfur recovery tail gas sucked into the water-blocking filter 2 into the outlet pipe 5. The second one-way valve 6 is a one-way outlet valve, and the tail gas enters the measuring gas chamber inside the main body 1 of the on-line analyzer through the outlet pipe 5, and the tail gas is analyzed on-line by using the outlet pipe 5; By adding swelling cotton and discoloring silica gel inside the water-blocking filter 2, when there is water in the tail gas entering the water-blocking filter 2, it will combine with the swelling cotton, and the swelling of the swelling cotton will prevent the water vapor from flowing through the outlet pipe 5 into the main body 1 of the on-line analyzer. And when there is water in the tail gas, it will react with the discoloring silica gel, which is convenient for the inspection personnel to detect the discoloration during the inspection to judge the entry of water vapor, and it is convenient to replace the swelling cotton and the discoloring silica gel inside the water-blocking filter 2 in time. And by rotatably arranging the cylinder 10 on the inner bottom wall of the water-blocking filter 2, a dial 11 is installed on the cylinder 10. When the piston rod 8 moves up and down, it will drive the cylinder 10 to rotate, thereby driving the dial 11 to rotate, which can stir and disperse the swelling cotton and the discoloring silica gel inside the water-blocking filter 2, facilitating the full combination and reaction of the swelling cotton and the discoloring silica gel with the water vapor, improving the effect of the swelling cotton in preventing the water vapor, and being beneficial to the full reaction of the water in the tail gas with the discoloring silica gel, making the discoloring effect more obvious.

[0039] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of the present utility model, all technical solutions that can implement the present utility model in other specific forms are included in the present utility model.

Claims

1. An on-line analyzer for sulfur recovery tail gas, comprising an on-line analyzer main body (1), characterized in that, One side of the main body (1) of the on-line analyzer is fixed with a water-blocking filter (2). An air inlet pipe (3) and an air outlet pipe (5) extending into the internal measurement chamber of the main body (1) of the on-line analyzer are fixed on the water-blocking filter (2). A first one-way valve (4) is installed on the air inlet pipe (3), and a second one-way valve (6) is installed on the air outlet pipe (5). A cylinder (7) is fixed on the top of the water-blocking filter (2). A piston rod (8) extending into the interior of the water-blocking filter (2) is installed at the output end of the cylinder (7). A piston (9) which is movably clamped inside the water-blocking filter (2) is fixed on the piston rod (8). A cylinder body (10) is rotatably arranged on the inner bottom wall of the water-blocking filter (2). The piston rod (8) is movably inserted into the interior of the cylinder body (10). A plurality of paddle pieces (11) are fixed on the outer peripheral wall of the cylinder body (10). The interior of the water-blocking filter (2) is filled with swollen cotton discoloring silica gel, and the swollen cotton and the discoloring silica gel are located below the piston (9). The piston rod (8) and the cylinder body (10) are cooperatively connected through a linkage structure. During the up-and-down movement of the piston rod (8), the cylinder body (10) is driven to rotate clockwise and counterclockwise reciprocally.

2. The on-line analyzer for sulfur recovery tail gas according to claim 1, wherein The water-blocking filter (2) is made of transparent glass or transparent plastic material.

3. The on-line analyzer for sulfur recovery tail gas according to claim 1, characterized in that, The outer diameter dimension of the piston (9) is adapted to the inner diameter dimension of the water-blocking filter (2), and a sealing ring is fixedly adhered to the outer peripheral wall of the piston (9).

4. An on-line analyzer for sulfur recovery tail gas according to claim 1, characterized in that, A plurality of the paddle pieces (11) are distributed in a circumferential and vertical array at equal angles on the outer peripheral wall of the cylinder body (10).

5. An on-line analyzer for sulfur recovery tail gas according to claim 1, characterized in that, A maintenance door is fixedly installed on the water-blocking filter (2) through bolts.

6. The on-line analyzer for sulfur recovery tail gas according to claim 1, characterized in that The linkage structure includes a spiral groove (12) opened on the piston rod (8) and a ball (13) movably embedded and clamped on the inner wall of the cylinder body (10). The ball (13) is movably clamped in the spiral groove (12) and can roll along the track where the spiral groove (12) is located.

7. An on-line analyzer for sulfur recovery tail gas according to claim 1, characterized in that, A sealing ring adhered to the inner wall of the top opening of the cylinder body (10) is arranged at the fitting clearance between the top opening of the cylinder body (10) and the piston rod (8).

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