Dry quenching section flue gas multistage desulfurization device

Abstract

The utility model provides a dry quenching section flue gas multistage desulfurization device which comprises a smoke guide tank, a desulfurization component and a mixing through pipe, a group of smoke guide pipes used for guiding out dry quenching section flue gas are arranged on the front side of the left end of the smoke guide tank, a group of first flow extraction pumps used for extracting flow of the dry quenching section flue gas are arranged on the left sides of the smoke guide pipes, and a group of second flow extraction pumps used for extracting flow of the dry quenching section flue gas are arranged on the left sides of the first flow extraction pumps. And a group of flue gas filtering tanks for filtering impurities in the flue gas of the coke dry quenching section are arranged on the left side of the flow suction pump I. Compared with the prior art, the device disclosed by the utility model has the following beneficial effects that the filtered flue gas of the coke dry quenching section is shunted and guided through the shunting pipe and then uniformly enters the plurality of groups of inner shells through the three groups of branch guide pipes; according to the invention, the flue gas of the dry quenching section is preliminarily filtered, the preliminarily filtered flue gas of the dry quenching section is diffused in the dry desulfurization cavities in the inner shell, sulfur dioxide in the flue gas is absorbed by limestone or lime slurry, gypsum is generated, and the desulfurization effect of the flue gas of the dry quenching section is improved through the desulfurization process of the plurality of dry desulfurization cavities in the inner shell.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the flue gas desulfurization technical field relates to a dry quenching section flue gas multistage desulfurization device. BACKGROUND

[0002] The dry quenching section flue gas limestone circulation desulfurization technology has some defects in application, mainly in desulfurization efficiency, system complexity, operation cost and secondary pollution. Due to the high temperature of the flue gas generated in the dry quenching process and the presence of a certain amount of coke powder and harmful substances, the desulfurization efficiency of limestone is limited, and it is difficult to achieve the ideal desulfurization effect. If the desulfurization system is designed or operated improperly, it may cause secondary pollution, such as heavy metal pollution in gypsum soil and water sources.

[0003] The conventional coping methods include improving the design of the desulfurization tower to improve the contact efficiency of the flue gas and the limestone, and adding pretreatment facilities to reduce the influence of coke powder and harmful substances on the desulfurization process. These methods also have disadvantages, improving the design of the desulfurization tower may result in higher initial investment and operating costs; although adding pretreatment facilities can reduce the influence on the desulfurization process, it will increase the complexity and energy consumption of the system, therefore, there is an urgent need for a dry quenching section flue gas multistage desulfurization device to solve the above problems. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a dry quenching section flue gas multistage desulfurization device to solve the problems raised in the background art.

[0005] The utility model realizes the following technical scheme: a dry quenching section flue gas multistage desulfurization device, comprising: a smoke guide tank and a mixing pipe, a group of smoke guide pipes for guiding the dry quenching section flue gas out of the smoke guide tank are arranged on the front side of the left end of the smoke guide tank, a group of flow extraction pumps one for extracting the dry quenching section flue gas are arranged on the left side of the smoke guide pipe, a group of flue gas filter tanks for filtering the impurities in the dry quenching section flue gas are arranged on the left side of the flow extraction pump one, a group of shunt pipes for shunting the filtered dry quenching section flue gas are arranged on the rear side of the flue gas filter tank, the inlet and outlet ends of the shunt pipe are divided into three, and a group of desulfurization components for desulfurizing the dry quenching section flue gas are arranged on the right side of the three groups of outlet ends.

[0006] The desulfurization components include a side frame one and an internal desulfurization filter cavity, a group of side frames two for holding the inner shell in front and rear position are arranged on the rear side of the side frame one, the side frame one and the side frame two are consistent in height specification, a plurality of groups of inner shells for desulfurizing the dry quenching section flue gas are arranged between the side frame one and the side frame two, the plurality of groups of inner shells are of the same specification and have a rectangular structure in cross section on the right side, and a group of side support ribs for keeping the dry quenching section flue gas stable are arranged on the inner side of the four groups of male corners of the inner shell.

[0007] As a preferred implementation, the inner side of the four groups of side support ribs is provided with a group of inner desulfurization filter cavities for passing dry quenching section flue gas. The inner desulfurization filter cavities inside the inner shell are structurally identical, and the inner desulfurization filter cavities are provided with dry desulfurization cavities for storing limestone.

[0008] As a preferred implementation, the left side of the leftmost inner shell is provided with a group of limiting racks for limiting the left side of the inner shell. The left side of the limiting rack is provided with a branch guide pipe for sealing connection with three groups of branch pipes and guiding dry quenching section flue gas into the branch guide pipe.

[0009] As a preferred implementation, the right end of the inner shell at the middle position of the rightmost inner shell is provided with a group of inner pipes for discharging dry quenching section flue gas after desulfurization. The right side of the inner pipe is provided with a group of reflux tanks for converging and storing dry quenching section flue gas after desulfurization. When the worker introduces the external dry quenching section flue gas into the flue gas filter tank through the smoke guide tank and the smoke guide pipe, and preliminarily filters the dust in the dry quenching section flue gas through the flue gas filter tank, the dust and impurities in the dry quenching section flue gas are intercepted in the flue gas filter tank, and the filtered dry quenching section flue gas is introduced through the branch pipe, uniformly enters the inner shell through the three groups of branch guide pipes, and diffuses in the dry desulfurization cavity in the inner shell. The dry desulfurization cavity is provided with limestone, and the filtered dry quenching section flue gas is mixed with limestone in the dry desulfurization cavity. The limestone or lime slurry absorbs sulfur dioxide in the flue gas, and generates gypsum. The desulfurization process in the dry desulfurization cavity of the plurality of inner shells improves the desulfurization effect of the dry quenching section flue gas.

[0010] As a preferred implementation, the rear side of the reflux tank is provided with a group of rear connecting pipes for circulating and refluxing dry quenching section flue gas after desulfurization. The middle position of the rear connecting pipe is provided with a group of suction pumps two for pumping dry quenching section flue gas after desulfurization.

[0011] As a preferred implementation, the right side of the rear connecting pipe is provided with a group of mixing pipes for guiding dry quenching section flue gas after desulfurization into the smoke guide tank for reflux. The front side of the smoke guide pipe is a mirror image L-shaped structure.

[0012] As a preferred embodiment, a group of pressure gauges for detecting the pressure of the dry quenching section flue gas inside the smoke guide pipe are arranged on the left side of the lower end of the smoke guide pipe, and a group of outer flue gas pipes for guiding the dry quenching section flue gas from the outside into the smoke guide tank are arranged on the upper end of the smoke guide tank.

[0013] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: the dry quenching section flue gas is preliminarily filtered by the flue gas filter tank, the dust and sundries in the dry quenching section flue gas are intercepted in the flue gas filter tank, the filtered dry quenching section flue gas is divided and guided into the inner shells through the shunt pipes, and the preliminarily filtered dry quenching section flue gas is diffused in the dry desulfurization cavities in the inner shells, the dry desulfurization cavities store limestone, the filtered dry quenching section flue gas is mixed with the limestone in the dry desulfurization cavities, the limestone or lime slurry absorbs the sulfur dioxide in the flue gas, and gypsum is generated, and the desulfurization effect of the dry quenching section flue gas is improved through the desulfurization processes in the dry desulfurization cavities in the plurality of inner shells.

[0014] The dry quenching section flue gas after the desulfurization process enters the reflux tank through the inner guide pipe, the reflux tank can collect the dry quenching section flue gas after the desulfurization process, and the dry quenching section flue gas after the desulfurization process is reserved for the staff to detect, the dry quenching section flue gas with poor desulfurization effect after detection can re-enter the smoke guide tank through the rear connecting pipe and the mixing pipe to perform the circulating desulfurization process of the dry quenching section flue gas, thereby improving the desulfurization effect of the dry quenching section flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a front view structure schematic diagram of the dry quenching section flue gas multistage desulfurization device of the present application.

[0017] Figure 2The utility model discloses a dry quenching section flue gas multistage desulfurization device in the rear side of desulfurization component's overhead structure position schematic diagram of dry quenching section flue gas multistage desulfurization device in the utility model discloses a dry quenching section flue gas multistage desulfurization device in the right view structure schematic diagram of inner shell.

[0018] Figure 3 For Figure 2 The enlarged structure schematic diagram of the middle A place;

[0019] Figure 4 The utility model discloses a dry quenching section flue gas multistage desulfurization device in the right view structure schematic diagram of inner shell of dry quenching section flue gas multistage desulfurization device in the utility model discloses a dry quenching section flue gas multistage desulfurization device in the right view structure schematic diagram of inner shell.

[0020] In the drawing: 100-lead smoke tank, 110-lead smoke pipe, 120-pressure gauge, 130-pump one, 140-smoke filter tank, 150-shunt pipe, 160-desulfurization component, 170-gas guide pipe, 180-internal circulation pipe one, 190-backflow tank, 200-internal circulation pipe two, 210-back connection pipe, 220-pump two, 230-three-way connector, 240-mixing pipe.

[0021] 16a-side frame one, 16b-inner tube, 16c-side frame two, 16d-inner shell, 16e-limiting frame, 16f-branch pipe, 16g-side support rib, 16h-inner desulfurization filter cavity. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4 A dry quenching section flue gas multistage desulfurization device, including: lead smoke tank 100, desulfurization component 160 and mixing pipe 240, lead smoke tank 100 left end front side is equipped with a group of lead smoke pipe 110 for the dry quenching section flue gas export, lead smoke pipe 110 left side is equipped with a group of pump one 130 for the dry quenching section flue gas extraction, pump one 130 left side is equipped with a group of smoke filter tank 140 for the dry quenching section flue gas internal impurity filtration, smoke filter tank 140 rear side is equipped with a group of shunt pipe 150 for the dry quenching section flue gas after filtration shunt, and the gas inlet end and the gas outlet end of shunt pipe 150 are divided into three, and the right side of the three groups of gas outlet ends is equipped with a group of desulfurization component 160 for the dry quenching section flue gas desulfurization;

[0024] The desulfurization component 160 comprises a side frame 16a and an inner desulfurization filter cavity 16h, the side frame 16a is provided with a plurality of side frames 16c for limiting the front and back of the inner shell 16d, the side frame 16a and the side frame 16c are of the same height, and a plurality of inner shells 16d for desulfurizing the dry quenching section flue gas are arranged between the side frame 16a and the side frame 16c, the plurality of inner shells 16d are of the same size and have a rectangular structure in the right side view, and four groups of inner sides of the inner shells 16d are respectively provided with a plurality of side support ribs 16g for stably passing the dry quenching section flue gas.

[0025] The inner sides of the four groups of side support ribs 16g are provided with a plurality of inner desulfurization filter cavities 16h for passing the dry quenching section flue gas, the inner desulfurization filter cavities 16h in the plurality of inner shells 16d are of the same structure, and the inner desulfurization filter cavities 16h are provided with dry desulfurization cavities for storing limestone.

[0026] The left side of the leftmost inner shell 16d is provided with a plurality of limiting frames 16e for limiting the left side, and the left side of the limiting frame 16e is provided with a plurality of branch guide pipes 16f for sealingly connecting with three branch pipes 150 and guiding the dry quenching section flue gas.

[0027] The right end of the middle position of the rightmost inner shell 16d is provided with a plurality of inner pipes 16b for discharging the dry quenching section flue gas after desulfurization, and the right side of the inner pipe 16b is provided with a plurality of reflux tanks 190 for converging and storing the dry quenching section flue gas after desulfurization.

[0028] As a first embodiment of the utility model: when the staff passes the external dry quenching section flue gas into the inner part of the flue gas filtering tank 140 through the smoke guide tank 100 and the smoke guide pipe 110, and preliminarily filters the dust in the dry quenching section flue gas through the flue gas filtering tank 140, after the dust and sundries in the dry quenching section flue gas are intercepted in the flue gas filtering tank 140, the filtered dry quenching section flue gas is branched and guided through the branch pipe 150, uniformly enters the inner part of the plurality of inner shells 16d through the three branch guide pipes 16f, and the preliminarily filtered dry quenching section flue gas diffuses in the dry desulfurization cavity in the inner shell 16d, the dry desulfurization cavity stores limestone, the filtered dry quenching section flue gas is mixed and contacted with the limestone in the dry desulfurization cavity, the limestone or lime slurry absorbs sulfur dioxide in the flue gas, and gypsum is generated, and the desulfurization effect of the dry quenching section flue gas is improved through the desulfurization process of the dry desulfurization cavity in the plurality of inner shells 16d.

[0029] The rear side of the reflux tank 190 is provided with a plurality of rear connecting pipes 210 for circulating and refluxing the dry quenching section flue gas after desulfurization, and the middle position of the rear connecting pipe 210 is provided with a plurality of suction pumps 220 for pumping the dry quenching section flue gas after desulfurization.

[0030] The right upper end of the rear connecting pipe 210 is provided with a group of mixed pipes 240 for guiding the dry quenching section flue gas after desulfurization into the reflux tank 100.

[0031] The left side of the lower end of the smoke guide pipe 110 is provided with a group of pressure gauges 120 for detecting the pressure of the dry quenching section flue gas in the smoke guide pipe 110.

[0032] As a second embodiment of the present application: when the staff detects that the desulfurization effect of the flue gas in the desulfurization part 160 is poor, the dry quenching section flue gas after the desulfurization process enters the reflux tank 190 through the inner guide pipe, the reflux tank 190 can collect the dry quenching section flue gas after the process and reserve it for the staff to detect, and the dry quenching section flue gas with poor desulfurization effect after detection can enter the smoke guide tank 100 again through the rear connecting pipe 210 and the mixed pipe 240 to perform the dry quenching section flue gas circulating desulfurization process, thereby improving the desulfurization effect of the dry quenching section flue gas.

[0033] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A multi-stage desulfurization device for flue gas in a dry quenching coke oven section, comprising: The flue gas duct (100), desulfurization component (160), and mixing pipe (240) are characterized in that: a set of flue gas ducts (110) for exporting the flue gas from the dry quenching section are provided on the front left side of the flue gas duct (100); a set of pumping pumps (130) for pumping the flue gas from the dry quenching section are provided on the left side of the pumping pumps (130); a set of flue gas filter canisters (140) for filtering impurities inside the flue gas from the dry quenching section are provided on the left side of the flue gas filter canisters (140); a set of diversion pipes (150) for diverting the filtered flue gas from the dry quenching section is provided on the rear side of the flue gas filter canisters (140); the inlet end and outlet end of the diversion pipes (150) are divided into three parts, and a set of desulfurization component (160) for desulfurizing the flue gas from the dry quenching section is provided on the right side of the three outlet ends. The desulfurization component (160) includes a side frame one (16a), an inner shell (16d), and an inner desulfurization filter chamber (16h). A set of side frames two (16c) is provided on the rear side of the side frame one (16a) for keeping the inner shell (16d) in front and behind. The side frames one (16a) and side frames two (16c) have the same height specifications. Between the side frames one (16a) and side frames two (16c), there are several sets of inner shells (16d) for desulfurizing the flue gas in the dry quenching section. The several sets of inner shells (16d) have the same specifications, and the right side cross-section is a rectangular structure. The inner shell (16d) has a set of side support ribs (16g) on ​​the inner side of the four sets of external corners for keeping the flue gas in the dry quenching section pass through stably.

2. The multi-stage desulfurization device for dry quenching coke oven gas according to claim 1, characterized in that: The four sets of side support ribs (16g) are provided with an inner desulfurization filter chamber (16h) for passing through the flue gas of the dry quenching section. The inner desulfurization filter chamber (16h) inside several sets of inner shells (16d) has the same structure. The inner desulfurization filter chamber (16h) is provided with a dry desulfurization chamber for storing limestone.

3. The multi-stage desulfurization device for dry quenching coke oven gas according to claim 2, characterized in that: The leftmost inner shell (16d) is provided with a set of limiting brackets (16e) for keeping it in a limited position. The left side of the limiting brackets (16e) is provided with a branch pipe (16f) for sealing connection with the three-component flow pipe (150) and for introducing the flue gas of the dry quenching section.

4. The multi-stage desulfurization device for dry quenching coke oven gas according to claim 3, characterized in that: The rightmost inner shell (16d) is provided with a set of inner tubes (16b) for discharging the flue gas from the dry quenching section after desulfurization at the right end of the middle position. A set of reflux tanks (190) for collecting and storing the flue gas from the dry quenching section after desulfurization is provided on the right side of the inner tubes (16b).

5. A multi-stage desulfurization device for dry quenching coke oven gas according to claim 4, characterized in that: The backflow tank (190) is provided with a set of rear connecting pipes (210) for circulating back the flue gas from the dry quenching section after desulfurization. The middle position of the rear connecting pipe (210) is provided with a set of pumping pump two (220) for pumping the flue gas from the dry quenching section after desulfurization.

6. The multi-stage desulfurization device for dry quenching coke oven gas according to claim 5, characterized in that: The upper right side of the rear connecting pipe (210) is provided with a set of mixing pipes (240) for guiding the flue gas from the dry quenching section after desulfurization into the flue gas canister (100) for recirculation. The front side of the flue gas canister (110) is considered to be a mirror L-shaped structure.

7. A multi-stage desulfurization device for dry quenching coke oven gas according to claim 6, characterized in that: A pressure gauge (120) is provided on the lower left side of the flue pipe (110) for detecting the pressure of the flue gas in the dry quenching section inside the flue pipe (110), and an external flue gas pipe is provided on the upper end of the flue gas canister (100) for introducing the external flue gas in the dry quenching section.

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