A safe sealed desulfurization reaction tank

Abstract

The present invention relates to a safe and sealed desulfurization reaction tank, comprising a reaction tank body, an inlet separation plate, a baffle, a partition, a gas phase baffle, and a defoaming nozzle; a desulfurization liquid inlet is provided at one end of the reaction tank body, and a desulfurization liquid outlet is provided at the other end; a gas phase baffle is provided near the end of the desulfurization liquid outlet to separate the reaction tank body into a gas separation section and a pressure balance section; an inlet separation plate is provided directly below the desulfurization liquid inlet; a plurality of baffles and partitions are provided within the reaction tank body; a plurality of defoaming nozzles are provided at the top of the reaction tank body; a gas outlet is provided at the top of the reaction tank body in the gas separation section, and a vented gas outlet is provided at the top of the reaction tank body in the pressure balance section. The present invention solves the environmental pollution problem caused by the direct release of vented gas from conventional desulfurization reaction tanks, eliminates the safety hazard of a large amount of gas directly entering the pressure balance system, and effectively reduces the amount of gas entrained by the desulfurization liquid from entering the downstream regeneration device.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven gas desulfurization, in particular to a desulfurization reaction tank used after wet oxidation desulfurization of coke oven gas and before regeneration of desulfurization liquid. Background Art

[0002] At present, in the wet oxidation desulfurization process of coke oven gas, after the desulfurization liquid absorbs the hydrogen sulfide component in the gas in the desulfurization tower, it is usually sent to the desulfurization reaction tank first, where the desulfurization reaction continues, and then the desulfurization liquid is sent to the desulfurization liquid regeneration tank for regeneration; the desulfurization reaction tank is usually a horizontal storage tank, which uses a spray pipe to spray and defoam, and the gas brought in by the desulfurization liquid is directly discharged through a vent pipe or connected to a pressure balance system.

[0003] In conventional desulfurization reaction tanks, due to the small coverage area of the spraying pipe and poor defoaming effect, the gas entrained in the desulfurization liquid is directly released, polluting the environment, endangering the health of operators, and causing safety hazards in the production process; a large amount of gas directly entering the pressure balance system is also not conducive to the stable operation of the system; in addition, the gas entrained in the desulfurization liquid enters the downstream desulfurization liquid regeneration device, which will also have an adverse effect on the subsequent regeneration process. Summary of the Invention

[0004] The present invention provides a safe and sealed desulfurization reaction tank, which solves the environmental pollution problem caused by the direct release of gas from conventional desulfurization reaction tanks, eliminates the safety hazard of a large amount of coal gas directly entering the pressure balance system, and effectively reduces the coal gas entrained in the desulfurization liquid from entering the downstream regeneration device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A safe and sealed desulfurization reaction tank comprises a reaction tank body, an inlet separation plate, a baffle, a partition, a gas phase baffle and a defoaming nozzle; the reaction tank body is a horizontal storage tank; a desulfurization liquid inlet is provided at the top of one end of the reaction tank body, and a desulfurization liquid outlet is provided at the bottom of the other end of the reaction tank body; a gas phase baffle is provided in the reaction tank body near the desulfurization liquid outlet end, which separates the reaction tank body into a gas separation section and a pressure balance section, wherein the gas separation section is close to the desulfurization liquid inlet end; an inlet separation plate is provided in the reaction tank body directly below the desulfurization liquid inlet; a plurality of baffles and partitions are provided in the reaction tank body between the desulfurization liquid inlet and the desulfurization liquid outlet, and the baffles and partitions are spaced apart to form a serpentine desulfurization liquid channel connected with upper and lower intervals in the reaction tank body; a plurality of defoaming nozzles are provided on the top of the reaction tank body; a gas outlet is provided on the top of the reaction tank body in the gas separation section, and a vent gas outlet is provided on the top of the reaction tank body in the pressure balance section.

[0007] The inlet separation plate is in a herringbone shape and is densely covered with circular holes.

[0008] The baffle closest to the desulfurization liquid inlet is the first baffle, and the partition closest to the first baffle is the first partition; one end of the inlet separation plate is fixedly connected to the first baffle, and both sides of the inlet separation plate are separated by a distance from the side walls of the reaction tank body; the bottom edge of the inlet separation plate is flush with the upper edge of the first partition.

[0009] Both sides of the baffle are fixedly connected to the side walls of the reaction tank body. There is a distance between the top of the baffle and the top wall of the reaction tank body, and between the bottom of the baffle and the bottom wall of the reaction tank body.

[0010] The two sides of the partition are fixedly connected to the side walls of the reaction tank body, the bottom end of the partition is fixedly connected to the bottom wall of the reaction tank body, and the top end of the partition is spaced a distance from the top wall of the reaction tank body.

[0011] The height of the partition decreases successively from the desulfurization liquid inlet to the desulfurization liquid outlet.

[0012] The two sides of the gas phase baffle are fixedly connected to the side walls of the reaction tank body, the top of the gas phase baffle is fixedly connected to the top wall of the reaction tank body, and the bottom end of the gas phase baffle is spaced a distance from the bottom wall of the reaction tank body.

[0013] A liquid level gauge is provided on the top of the reaction tank body near one end of the desulfurization liquid outlet.

[0014] A plurality of defoaming nozzles are evenly arranged along the direction from the desulfurization liquid inlet to the desulfurization liquid outlet; the defoaming nozzles are anti-blocking nozzles.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) An inlet separation plate is set below the desulfurization liquid inlet, and the inlet separation plate is densely covered with circular holes to achieve the initial separation of the desulfurization liquid and the entrained coal gas;

[0017] 2) The reactor body is equipped with multiple baffles and partitions, with the height of the partitions decreasing in stages. The desulfurized liquid is further separated from the entrained gas during the overflow of the partitions.

[0018] 3) Defoaming nozzles are evenly distributed on the top of the reaction tank body, which can effectively eliminate sulfur foam by spraying desulfurization liquid to defoam;

[0019] 4) It solves the problem of direct gas release in conventional desulfurization reaction tanks, avoids the problem of unstable system operation caused by direct gas entry into the pressure balance system, and eliminates safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a safe sealed desulfurization reaction tank according to the present invention.

[0021] Figure 2 yes Figure 1 AA view in.

[0022] Figure 3 It is a partial view of the inlet separation plate of the present invention.

[0023] In the figure: 1. Reactor body 2. Inlet separation plate 3. Baffle 4. Partition 5. Defoaming nozzle 6. Gas phase baffle 7. Liquid level gauge DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0025] like Figure 1 、 Figure 2 As shown, the safe and sealed desulfurization reaction tank of the present invention comprises a reaction tank body 1, an inlet separation plate 2, a baffle 3, a partition 4, a gas phase baffle 6 and a defoaming nozzle 5; the reaction tank body 1 is a horizontal storage tank; a desulfurization liquid inlet is provided at the top of one end of the reaction tank body 1, and a desulfurization liquid outlet is provided at the bottom of the other end of the reaction tank body 1; a gas phase baffle 6 is provided in the reaction tank body 1 near the desulfurization liquid outlet end, which separates the reaction tank body 1 into a gas separation section and a pressure balance section, wherein the gas separation section is close to the desulfurization liquid outlet. One end of the desulfurization liquid inlet; an inlet separation plate 2 is provided in the reaction tank body 1 corresponding to the desulfurization liquid inlet directly below the desulfurization liquid inlet; a plurality of baffles 3 and partitions 4 are provided in the reaction tank body 1 between the desulfurization liquid inlet and the desulfurization liquid outlet, and the baffles 3 and the partitions 4 are arranged at intervals to form a serpentine desulfurization liquid channel connected with the upper and lower intervals in the reaction tank body 1; a plurality of defoaming nozzles 5 are provided on the top of the reaction tank body 1; a gas outlet is provided on the top of the reaction tank body 1 of the gas separation section, and a gas outlet is provided on the top of the reaction tank body 1 of the pressure balance section.

[0026] The inlet separation plate 2 is in a herringbone shape and is densely covered with circular holes (such as Figure 3 shown).

[0027] The baffle closest to the desulfurization liquid inlet is the first baffle, and the partition closest to the first baffle is the first partition; one end of the inlet separation plate 2 is fixedly connected to the first baffle, and both sides of the inlet separation plate 2 are separated by a distance from the side walls of the reaction tank body 1; the bottom edge of the inlet separation plate 2 is flush with the upper edge of the first partition.

[0028] Both sides of the baffle plate 3 are fixedly connected to the side walls of the reaction tank body 1 , and there is a distance between the top end of the baffle plate 3 and the top wall of the reaction tank body 1 , and between the bottom end of the baffle plate 3 and the bottom wall of the reaction tank body 1 .

[0029] Both sides of the partition plate 4 are fixedly connected to the side walls of the reaction tank body 1 , the bottom end of the partition plate 4 is fixedly connected to the bottom wall of the reaction tank body 1 , and the top end of the partition plate 4 is spaced a distance from the top wall of the reaction tank body 1 .

[0030] The height of the partition 4 decreases gradually from the desulfurization liquid inlet to the desulfurization liquid outlet.

[0031] Both sides of the gas phase baffle 6 are fixedly connected to the side walls of the reaction tank body 1, the top of the gas phase baffle 6 is fixedly connected to the top wall of the reaction tank body 1, and the bottom end of the gas phase baffle 6 is spaced a distance from the bottom wall of the reaction tank body 1.

[0032] A liquid level gauge 7 is provided on the top of the reaction tank body 1 near one end of the desulfurization liquid outlet.

[0033] Along the direction from the desulfurization liquid inlet to the desulfurization liquid outlet, a plurality of defoaming nozzles 5 are evenly arranged; the defoaming nozzles 5 are anti-blocking nozzles.

[0034] The present invention relates to a safe and sealed desulfurization reaction tank, wherein the reaction tank body 1 is a conventional horizontal storage tank structure, including a head, a circular cylinder, a saddle and the like.

[0035] The inlet separation plate 2 provided below the desulfurization liquid inlet is covered with circular holes. One end of the inlet separation plate 2 is fixed on the first baffle, and the bottom extends to a height flush with the upper edge of the first partition.

[0036] The baffle plate 3 is fixed in the reaction tank body 1 , and gaps are provided between the top and bottom of the baffle plate and the reaction tank body 1 .

[0037] The partition 4 is fixed in the reaction tank body 1 , with a gap provided between the top of the partition 4 and the reaction tank body 1 , and the height of the partition 4 decreases step by step along the direction from the desulfurization liquid inlet to the desulfurization liquid outlet.

[0038] The gas phase baffle 6 is fixed in the reaction tank body 1, with a gap between its bottom and the reaction tank body 1, and its lower part extends below the liquid level of the desulfurization liquid, dividing the gas phase space in the reaction tank body 1 into two independent spaces.

[0039] In the safe and sealed desulfurization reactor described herein, desulfurized liquid exiting the desulfurization tower enters the reactor body through the desulfurization liquid inlet. It passes through a herringbone-shaped inlet separator plate 2, which is dotted with circular holes, achieving a preliminary separation between the desulfurized liquid and entrained gas. The desulfurized liquid then flows through a serpentine channel formed by multiple sets of baffles 3 and partitions 4. As the partitions 4 gradually decrease in height, the desulfurized liquid further separates entrained gas as it overflows the partitions 4. Multiple defoaming nozzles 5 are evenly distributed across the top of the reactor body 1, effectively eliminating sulfur foam by spraying the desulfurized liquid. The degassed desulfurized liquid enters the downstream desulfurization liquid regeneration unit through the desulfurization liquid outlet. A gas phase baffle 6 is installed at the rear of the reactor body 1, dividing the gas phase within the reactor body 1 into two sections. The front gas separation section contains a large amount of gas, which is directly returned to the gas system through the gas outlet. The vented gas from the rear pressure equalization section is fed into the pressure equalization system.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A safe sealed desulfurization reaction tank, characterized in that: It includes a reaction tank body, an inlet separation plate, a baffle, a partition, a gas phase baffle and a defoaming nozzle; the reaction tank body is a horizontal storage tank; a desulfurization liquid inlet is provided at the top of one end of the reaction tank body, and a desulfurization liquid outlet is provided at the bottom of the other end of the reaction tank body; a gas phase baffle is provided in the reaction tank body near the desulfurization liquid outlet end, which separates the reaction tank body into a gas separation section and a pressure balance section, wherein the gas separation section is close to the desulfurization liquid inlet end; both sides of the gas phase baffle are fixedly connected to the side walls of the reaction tank body, the top of the gas phase baffle is fixedly connected to the top wall of the reaction tank body, and the bottom end of the gas phase baffle is spaced a distance from the bottom wall of the reaction tank body; an inlet separation plate is provided in the reaction tank body corresponding to the desulfurization liquid inlet; a number of baffles and partitions are provided in the reaction tank body between the desulfurization liquid inlet and the desulfurization liquid outlet. , the baffle and the partition are arranged at intervals to form a serpentine desulfurization liquid channel with upper and lower intervals connected in the reaction tank body; the two sides of the baffle are fixedly connected to the side walls of the reaction tank body, and there is a distance between the top of the baffle and the top wall of the reaction tank body, and between the bottom of the baffle and the bottom wall of the reaction tank body; the two sides of the baffle are fixedly connected to the side walls of the reaction tank body, and the bottom end of the baffle is fixedly connected to the bottom wall of the reaction tank body, and there is a distance between the top of the baffle and the top wall of the reaction tank body; along the direction from the desulfurization liquid inlet to the desulfurization liquid outlet, the height of the baffle decreases successively; the top surface of the baffle is higher than the top surface of the baffle; a number of defoaming nozzles are provided on the top of the reaction tank body; a gas outlet is provided on the top of the reaction tank body of the gas separation section, and a gas outlet is provided on the top of the reaction tank body of the pressure balance section.

2. A safe sealed desulfurization reaction tank according to claim 1, characterized in that: The inlet separation plate is in a herringbone shape and is densely covered with circular holes.

3. A safe sealed desulfurization reaction tank according to claim 1 or 2, characterized in that: The baffle closest to the desulfurization liquid inlet is the first baffle, and the partition closest to the first baffle is the first partition; one end of the inlet separation plate is fixedly connected to the first baffle, and both sides of the inlet separation plate are separated by a distance from the side walls of the reaction tank body; the bottom edge of the inlet separation plate is flush with the upper edge of the first partition.

4. The safe sealed desulfurization reaction tank according to claim 1, characterized in that: A liquid level gauge is provided on the top of the reaction tank body near one end of the desulfurization liquid outlet.

5. The safe sealed desulfurization reaction tank according to claim 1, characterized in that: A plurality of defoaming nozzles are evenly arranged along the direction from the desulfurization liquid inlet to the desulfurization liquid outlet; the defoaming nozzles are anti-blocking nozzles.

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