Optimized flue gas desulfurization device

Abstract

An optimized flue gas desulfurization device comprises a raw material bin, a reactor and a dust collector, the raw material bin is communicated with the reactor through a feeding pipeline, a first fan is arranged at the inlet end of the feeding pipeline, an outlet of the raw material bin is communicated to the position, close to the inlet end of the feeding pipeline, of the feeding pipeline, and the outlet end of the feeding pipeline is communicated to the reactor; the reactor is communicated with the ash collector through a discharging pipeline, a second fan is arranged at the inlet end of the discharging pipeline, an outlet of the reactor is communicated to the position, close to the inlet end of the discharging pipeline, of the discharging pipeline, the outlet end of the discharging pipeline is communicated to an inlet of the ash collector, a first adjusting valve is arranged on the feeding pipeline, and a second adjusting valve is arranged on the discharging pipeline. According to the utility model, the probability of ash fluffy phenomenon of the desulfurizing agent is effectively reduced, meanwhile, the control on the dosage of the desulfurizing agent is improved, and more manpower and material resources are saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flue gas desulfurization technical field especially relates to a flue gas desulfurization device of optimization control desulfurizer dosage. BACKGROUND

[0002] With the development of industry and the increase of energy demand, sulfur dioxide (SO2) in coal-fired flue gas has become the main cause of air pollution. Flue gas desulfurization (FGD) is an important measure to prevent and control air pollution, which can effectively remove sulfur dioxide in flue gas, reduce the probability of atmospheric acidification and photochemical smog formation, thereby effectively reducing the damage of coal-fired flue gas to the ecological system, and further improving the air quality and better maintaining the ecological balance. The existing flue gas desulfurization technology mainly includes wet method, dry method and semi-dry method, among which the dry FGD has the advantages of no sewage and waste acid discharge, light equipment corrosion, flue gas is beneficial to chimney dispersion after purification, and less secondary pollution, but the existing dry flue gas desulfurization equipment needs to be controlled by a special person when the material is hit if the material hitting speed is too low, the desulfurizer in the raw material bin is easy to occur the phenomenon of material piling up; if the material hitting speed is too high, the waste gas emission index is too low, the amount of desulfurizer needs to be increased, and the equipment cannot be continuously opened, which wastes manpower and material resources, and the excess desulfurizer hit by the existing dry flue gas desulfurization equipment cannot be recycled, so the existing dry flue gas desulfurization equipment generally has the problems of large amount of desulfurizer and difficult to control. SUMMARY

[0003] The utility model aims at providing a kind of flue gas desulfurization device of control desulfurizer dosage, to solve the technical problems of the existing flue gas desulfurization device desulfurizer large amount, and difficult to control.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows:

[0005] An optimized flue gas desulfurization device includes a raw material bin, a reactor and an ash collector. The raw material bin and the reactor are connected by a feeding pipe. The inlet end of the feeding pipe is provided with a first fan. The outlet of the raw material bin is connected to the feeding pipe near the inlet end. The outlet end of the feeding pipe is connected to the reactor. The reactor and the ash collector are connected by a discharge pipe. The inlet end of the discharge pipe is provided with a second fan. The outlet of the reactor is connected to the discharge pipe near the inlet end. The outlet end of the discharge pipe is connected to the inlet of the ash collector. A first regulating valve is provided on the feeding pipe. A second regulating valve is provided on the discharge pipe.

[0006] Further, a flue is provided on the reactor, which is connected to a flue gas inlet device. The outlet end of the feeding pipe is connected to the inlet of the flue.

[0007] Further, the feed pipe is provided with a parallel return pipe, the inlet end of the return pipe is connected to the feed pipe between the first regulating valve and the reactor, the outlet end is communicated to the top of the raw material bin, and the return pipe is provided with a third regulating valve.

[0008] Further, the raw material bin and the feed pipe are provided with a first discharging machine, and the reactor and the discharge pipe are provided with a second discharging machine.

[0009] The optimized flue gas desulfurization device can effectively reduce the probability of desulfurizer dusting, improve the control of the amount of desulfurizer, reduce the generation of waste that cannot be recovered, and reduce the demand for manual intervention, thereby saving manpower and material resources, and making the emission index of waste gas more stable and the desulfurization reaction more sufficient. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The utility model discloses a structure schematic view;

[0011] Marked in the drawing: 1, raw material bin;11, first discharging machine;2, reactor;21, flue;22, second discharging machine;3, dust collector;4, feed pipe;41, first fan;42, first regulating valve;5, discharge pipe;51, second fan;52, second regulating valve;6, return pipe;61, third regulating valve. DETAILED DESCRIPTION

[0012] In order to better understand the purpose, structure and function of the utility model, the utility model is further described in detail below in combination with the drawings.

[0013] As Figure 1 The utility model discloses an optimized flue gas desulfurization device, which comprises a raw material bin 1, a reactor 2 and a dust collector 3, wherein the raw material bin 1 is used for pre-storing desulfurizer, the raw material bin 1 is communicated with the reactor 2 through a feed pipe 4, the inlet end of the feed pipe 4 is provided with a first fan 41, the outlet of the raw material bin 1 is communicated to the position close to the inlet end of the feed pipe 4, and the outlet end of the feed pipe 4 is communicated to the reactor 2, when working, the desulfurizer in the raw material bin 1 can be conveyed to the reactor 2 through the feed pipe 4 under the action of the first fan 41, and then the desulfurizer reacts with the flue gas in the reactor 2, the reactor 2 is communicated with the dust collector 3 through a discharge pipe 5, the inlet end of the discharge pipe 5 is provided with a second fan, the outlet of the reactor 2 is communicated to the position close to the inlet end of the discharge pipe 5, and the outlet end of the discharge pipe 5 is communicated to the inlet of the dust collector 3, the dust after the desulfurization reaction in the reactor 2 can be conveyed to the dust collector 3 through the discharge pipe 5 under the action of the second fan 51, and then the dust is collected and stored by the dust collector 3, and is ready for subsequent processing.

[0014] Further, the reactor 2 is provided with a flue 21 in communication, which is connected to a flue gas inlet device outside the flue 21, and the outlet end of the feeding pipeline 4 is connected in parallel to the inlet of the flue 21. The desulfurizing agent in the feeding pipeline 4 is mixed with the flue gas in the flue 21, and the mixture of the desulfurizing agent and the flue gas enters the reactor 2, and the mixture after the mixing of the desulfurizing agent and the flue gas is subjected to a desulfurization reaction in the reactor 2. Thus, the desulfurization reaction of the flue gas can be more sufficient and complete, and the effective reaction rate is higher.

[0015] Further, the first adjusting valve 42 is arranged on the feeding pipeline 4, and the second adjusting valve 52 is arranged on the discharging pipeline 5. The first adjusting valve 42 can control the flow rate of the desulfurizing agent blown out of the raw material bin 1 by the first fan 41, thereby controlling the amount of the desulfurizing agent. The second adjusting valve 52 can control the flow rate of the dust in the reactor 2, thereby controlling the reaction degree in the reactor 2, so that the desulfurizing agent and the flue gas are fully reacted in the reactor 2 and then discharged. Thus, waste caused by too fast discharging speed is avoided, and waste caused by insufficient reaction is also avoided.

[0016] Further, the feeding pipeline 4 is provided with a parallel return pipeline 6, the inlet end of the return pipeline 6 is connected to the feeding pipeline 4 between the first adjusting valve 42 and the reactor 2, and the outlet end of the return pipeline 6 is connected to the raw material bin 1. The return pipeline 6 is connected to the top of the raw material bin 1. The third adjusting valve 61 is arranged on the return pipeline 6. The third adjusting valve 61 can not only cooperate with the first adjusting valve 42 to control the flow rate of the desulfurizing agent delivered from the feeding pipeline 4 to the reactor 2, but also effectively control the air pressure in the raw material bin 1 to prevent the generation of the dusting phenomenon.

[0017] Further, the first discharging machine 11 is arranged between the raw material bin 1 and the feeding pipeline 4, and the second discharging machine 22 is arranged between the reactor 2 and the discharging pipeline 5. The desulfurizing agent in the raw material bin 1 is delivered to the feeding pipeline 4 through the first discharging machine 11, and the dust in the reactor 2 is delivered to the discharging pipeline 5 through the second discharging machine 22. Thus, the discharging of the raw material bin 1 and the reactor 2 is more controllable.

[0018] In operation, the desulfurizing agent pre-stored in the raw material bin 1 is delivered to the flue 21 of the reactor 2 through the feeding pipeline 4 under the action of the first fan 41. The desulfurizing agent is mixed with the flue gas in the flue 21, and the mixture enters the reactor 2 to perform a desulfurization reaction. The dust after the desulfurization reaction is delivered to the dust collector 3 through the discharging pipeline 5 under the action of the second fan 51, and is stored for subsequent processing.

[0019] The flue gas desulfurization device is simple in structure, low in cost, easy to obtain and manufacture, the setting of the reflux pipeline 6 effectively reduces the probability of the desulfurizer generating dust, simultaneously improves the control on the desulfurizer dosage, the combination of various mechanical components reduces the demand of manual intervention, the emission index of waste gas is more stable, the reaction is more sufficient, the quality of dry coke fine powder is better, and the economic benefit is higher.

[0020] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, these features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. An optimized flue gas desulfurization device, characterized in that, It includes a raw material silo (1), a reactor (2) and an ash collector (3). The raw material silo (1) and the reactor (2) are connected by a feeding pipeline (4). The inlet end of the feeding pipeline (4) is equipped with a first blower (41). The outlet of the raw material silo (1) is connected to the feeding pipeline (4) near its inlet end. The outlet end of the feeding pipeline (4) is connected to the reactor (2). The reactor (2) and the ash collector (3) are connected by a discharge pipeline (5). The inlet end of the discharge pipeline (5) is equipped with a second blower (51). The outlet of the reactor (2) is connected to the discharge pipeline (5) near its inlet end. The outlet end of the discharge pipeline (5) is connected to the inlet of the ash collector (3). The feeding pipeline (4) is equipped with a first regulating valve (42), and the discharge pipeline (5) is equipped with a second regulating valve (52).

2. The optimized flue gas desulfurization device according to claim 1, characterized in that, The reactor (2) is provided with a connected flue (21), which is connected to an external flue gas inlet device. The outlet end of the feed pipeline (4) is connected in parallel to the inlet of the flue (21).

3. The optimized flue gas desulfurization device according to claim 2, characterized in that, The feed pipeline (4) is provided with a parallel return pipeline (6). The inlet end of the return pipeline (6) is connected in parallel to the feed pipeline (4) between the first regulating valve (42) and the reactor (2), and its outlet end is connected to the top of the raw material silo (1). A third regulating valve (61) is provided on the return pipeline (6).

4. The optimized flue gas desulfurization device according to claim 1, characterized in that, A first feeder (11) is provided between the raw material silo (1) and the feeding pipeline (4), and a second feeder (22) is provided between the reactor (2) and the discharge pipeline (5).

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