阅读说明：本技术 一种分支管污染物固体脱除剂喷射装置 (branch pipe pollutant solid removing agent injection apparatus ) 是由 郝向宇 许昌日 史丽羽 王玉山 程俊峰 刘英华 于 2019-07-08 设计创作，主要内容包括：本发明提供了一种法兰型入口污染物固体脱除剂喷射装置,包括脱除剂入口、脱除剂喷枪、脱除剂出口、脱除剂导流板、脱除剂均隔板,其中,脱除剂入口与脱除剂出口设置于脱除剂喷枪上,脱除剂喷枪具有多支喷管,脱除剂导流板通过支架焊接在喷枪上,沿喷枪纵向布置,横截面为Ω型,且脱除剂导流板延展出的平翼面能够扩大脱除剂导流板面积,使得脱除剂能够完全覆盖烟道内各流通面,保证其扩散均匀,浓度分布合理,两块脱除剂均隔板在入口弯管下方位置,其将通过弯管流入的脱除剂均匀分配到下方每支喷管中,确保烟气中污染物与脱除剂充分接触,保证污染物的脱除达到理想的程度,另外,本装置容易替换,具有检修维护方便的优点。(The invention provides a flange type inlet pollutant solid removing agent injection device, which comprises a removing agent inlet, a removing agent spray gun, a removing agent outlet, a removing agent guide plate and a removing agent uniform partition plate, wherein the removing agent inlet and the removing agent outlet are arranged on the removing agent spray gun, the removing agent spray gun is provided with a plurality of spray pipes, the removing agent guide plate is welded on the spray gun through a bracket and is longitudinally arranged along the spray gun, the cross section of the removing agent guide plate is omega-shaped, and the flat wing surface extended by the removing agent guide plate can enlarge the area of the removing agent guide plate, so that the removing agent can completely cover each flow surface in a flue, the diffusion of the removing agent is ensured to be uniform, the concentration distribution is reasonable, two removing agent uniform partition plates are arranged below an inlet bent pipe, the removing agent flowing in through the two removing agent uniform partition plates is uniformly distributed into each lower spray pipe, the pollutant in the flue gas is ensured to be fully contacted, in addition, this device is easy to be replaced, has the convenient advantage of maintenance.)

1. A branched pipe pollutant solid removing agent injection device is characterized by comprising a removing agent inlet, a removing agent spray gun, a removing agent outlet, a removing agent guide plate and a removing agent equalizing partition plate, wherein the removing agent spray gun comprises n spray gun branch pipes, the total number of the spray gun branch pipes is n which is more than or equal to 3, the removing agent inlet is arranged at the top of the removing agent spray gun, the removing agent outlet is formed in the side wall of each removing agent spray gun branch pipe, 8-20 removing agent outlets are formed in the side wall of each removing agent spray gun branch pipe, the removing agent guide plate is in an omega shape and provided with flat wing parts extending towards two sides, the removing agent spray gun is longitudinally welded on the removing agent spray gun through a support, the removing agent spray gun is vertically inserted into a flue, and the removing agent equalizing partition plate is arranged at the position below a bent pipe of the removing agent inlet and consists.

2. The branched pipe contaminant solid removing agent spraying apparatus according to claim 1, wherein the width of the flat wing portion is 1 to 2 times the radius corresponding to the semicircle of the removing agent deflector.

3. the branched pipe contaminant solid removal agent injection apparatus of claim 1, wherein the lance leg lengths differ by 1/n times the longest lance leg length in order.

4. the branched pipe contaminant solids removal agent injection apparatus of claim 3, wherein the lance legs are longest as the lance legs are closer to a left side of the removal agent deflector, and the lengths of the lance legs decrease successively in a direction away from the removal agent deflector.

5. The branched pipe contaminant solid removing agent injecting apparatus as claimed in claim 3, wherein each of the lance branch pipes has a diameter of 1.0cm to 10.0 cm.

6. a lateral pipe contaminant solid removing agent spraying device according to claim 3, wherein the spraying gun pipes are spaced at intervals of 0.5 to 2 m.

7. the branched pipe contaminant solid removing agent injecting apparatus as claimed in claim 3, wherein the longest lance branch pipe length of the removing agent lance is 50% to 80% of the total flue height.

8. The branched pipe pollutant solid removing agent injection device of claim 1, wherein the removing agent outlets are alternately arranged at a height of 5-20 cm.

9. the branched pipe contaminant solid removing agent ejecting device according to claim 8, wherein the removing agent outlet aperture is reduced in order from top to bottom.

10. the branched pipe contaminant solid removing agent injecting apparatus as claimed in claim 1, wherein an upper portion of said removing agent equalizing plate is in a shape of a Chinese character 'jing'.

Technical Field

The invention relates to the technical field of flue gas pollutant removal, in particular to a branch pipe pollutant solid remover injection device.

Background

The pollutants in the flue gas discharged by modern industry are various, and mainly comprise SO in the flue gas discharged by industries such as coal-fired power generation, waste incineration, metal smelting, cement production, steel sintering and the like₂、SO₃、NO_xHCl, heavy metals (represented by mercury), dioxins, and the like. Wherein the acid gas SO₂、NO_x、SO₃HCl and the like are main pollutants in modern industrial flue gas, wherein SO₂、NO_xMost commonly, such acidic gases can cause serious environmental pollution, such as acid rain, photochemical pollution, and the like, if improperly controlled; SO (SO)₃as a pollutant with less harm ratio of SO in flue gas₂and more serious. Excess SO in flue gas₃The generation of the blue smoke directly causes the phenomenon of 'blue smoke', and is also one of the sources of PM2.5 in the atmosphere; it also increases the flue gas acid dew point, leading to increased equipment corrosion.

The heavy metal pollutants have a relatively serious influence on the environment, wherein the heavy metals represented by mercury are local, regional and global pollutants, and a plurality of researches show that the mercury has an inseparable influence on the generation of various diseases, so that the reduction of the emission of the heavy metals such as the mercury is beneficial to the health of human beings and the protection of the environment. It can enter the atmosphere through various ways and channels, and the combustion of coal is the largest artificial mercury pollution source at present.

At present, aiming at the treatment of heavy metal pollutants, adsorbents such as novel adsorbents of activated carbon, fly ash, calcium-based substances, activated coke and the like are generally sprayed into a front flue of a dust remover industrially through a spray gun, and mercury and other heavy metals in flue gas are adsorbed and removed through physical adsorption and are captured by a dust remover at the downstream of the flue.

In industrial treatment, adsorbents such as activated carbon and activated coke are generally sprayed into a flue by a spray gun, and then are adsorbed, so that the effects of removing dioxin and reducing emission of dioxin are achieved.

The generality and importance of the lance in industrial applications can be found by analysis, and most contaminant removal will be carried out by the lance with the corresponding adsorbent or absorbent. The existing adsorbent/absorbent injection device generally adopts a straight pipe to be directly inserted into a flue, the nozzle of the injection device adopts a single-row straight nozzle, the diffusion effect of the straight nozzle is not good, the injected adsorbent/absorbent cannot completely cover the flow surface of the flue, and under the action of the pressure of flue gas, the diffusion area of the adsorbent/absorbent injected from an outlet is reduced to a certain extent compared with that of the adsorbent/absorbent in a static state, pollutants in the flue gas cannot be fully contacted with the adsorbent/absorbent, the pollutant absorption rate is low, so that the pollutants can easily enter the outside air, and the environment is damaged.

disclosure of Invention

Aiming at the problems, the invention provides a branched pipe pollutant solid remover injection device arranged in a flue, which has the specific technical scheme that:

a branched pipe pollutant solid removing agent injection device comprises a removing agent inlet, a removing agent spray gun, a removing agent outlet, a removing agent guide plate and a removing agent uniform partition plate, wherein the removing agent spray gun comprises n spray gun branch pipes, the total number of the spray gun branch pipes is n which is more than or equal to 3, the removing agent inlet is arranged at the top of the removing agent spray gun, the side wall of each removing agent spray gun branch pipe is provided with the removing agent outlet, 8-20 removing agent outlets are arranged in total, the removing agent guide plate is omega-shaped and provided with flat wing parts extending towards two sides, the flat wing parts are longitudinally welded on the removing agent spray gun through a support, the removing agent spray gun is vertically inserted into a flue, and the removing agent uniform partition plate is arranged at the position below a bent pipe of the removing agent inlet and;

Further, the width of the flat wing part is 1-2 times of the radius corresponding to the semicircle of the remover guide plate;

Furthermore, the lengths of the spray gun branch pipes are sequentially different by 1/n times of the length of the longest spray gun branch pipe;

furthermore, the spray gun branch pipes are the longest in length and are continuously and sequentially reduced along the direction far away from the remover guide plate;

Preferably, the diameter of the branch pipe of the spray gun is 1.0 cm-10.0 cm;

Preferably, the interval between the spray gun branch pipes is 0.5-2 m;

preferably, the length of the longest spray gun branch pipe of the remover spray gun is 50-80% of the total height of the flue;

Further, the remover outlets are alternately arranged at the height of 5-20 cm;

Preferably, the pore diameters of the remover outlets are sequentially reduced from top to bottom;

Preferably, the upper part of the stripping agent uniform partition plate is in a # -shape;

after the structure of the invention is adopted, the remover such as activated carbon powder and other solids enter the inlet of the spray gun along the air conveyed by the compressed air pipeline, are fully mixed by the front end of a section of spray gun without an outlet, and the uniform remover partition plate is arranged below the inlet, so that the remover is uniformly guided into the spray gun branch pipes with different lengths below the inlet and is sprayed into the flue from the outlet. The guide plate is longitudinally arranged along the spray gun, the cross section of the guide plate is in an omega shape, the guide plate forms a low-pressure area at the downstream of the contact position of the flue gas, the turbulence of the fluid is enhanced, the pressure influence from the flue gas is avoided, the injection area of the adsorbent/absorbent is enlarged, and the remover is better combined with the corresponding fluid. Because the bottom position of the spray gun is closed, the outlet is only arranged at the position of the side wall, sometimes the bottom can present a turbulent state due to the difference of the heights of the flues, and in order to ensure that the removing agents such as the active carbon are not accumulated at the bottom position to block the outlet and ensure that the dynamic balance is ensured and the removing dosage sprayed by the outlet is basically kept consistent, the hole diameter of the outlet of the spray gun pipeline is required to be reduced from top to bottom in sequence, so that the spraying amount of the outlet at the bottom can. Set up the dual function in omega type guide plate and aperture and guarantee that desorption agents such as the active carbon of flow are enough even stable diffusion, ensure with the pollutant in the flue abundant contact, improve the adsorption capacity of pollutant, guarantee that the pollutant is difficult for getting into the outside atmosphere in, environmental protection quality improves the environmental improvement level.

drawings

FIG. 1 is a schematic diagram of the main structure of a stripping agent spraying device according to the present invention;

FIG. 2 is a schematic view of the main structure of the stripping agent spraying device with a flue according to the present invention;

3 FIG. 3 3 3 is 3 a 3 schematic 3 sectional 3 view 3 A 3- 3 A 3 of 3 the 3 remover 3 spray 3 apparatus 3; 3

FIG. 4 is a layout view of the remover spray device of the present invention installed on the flue plane

FIG. 5 is a sectional view B-B of the remover spray unit installed in the plane of the flue;

FIG. 6 is a perspective view of embodiment 1 of the present invention;

FIG. 7 is a schematic structural view of example 1 of the present invention;

FIG. 8 is a perspective view of embodiment 2 of the present invention;

FIG. 9 is a schematic structural view of example 2 of the present invention;

FIG. 10 is a perspective view of embodiment 3 of the present invention;

FIG. 11 is a schematic structural view of example 3 of the present invention;

FIG. 12 is a diagram showing the operational effect of a stripping agent spraying device without a stripping agent deflector installed;

Fig. 13 is a diagram showing the operational effect of the remover spraying device of the present invention.

in the figure: 1-flue; 2-a remover inlet; 3-a remover spray gun; 4-a remover outlet; 5-a remover deflector; 6-removing agent uniform partition board; 7-lance manifold.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the remover injection device of the present invention comprises a flue 1, wherein flue gas flows in the flue 1, the flue gas flows from front to back along the flue 1, a remover spray gun 3 is arranged in the flue 1, the remover spray gun 3 comprises a remover inlet 2 at the upper end, a plurality of spray gun branch pipes 7 arranged in the flue, and remover outlets 4 arranged on the side walls of the spray gun branch pipes 7 and distributed from top to bottom, the remover guide plate 5 is connected with the remover through a bracket in a welding manner, the remover uniform partition plate 6 arranged below the remover inlet 2 is arranged, the aperture of the remover outlet 4 is reduced from top to bottom in sequence, and when the aperture of the first remover outlet 4 is x, the aperture of the remover outlet 4 below is in the x interval (1/2-1/10). .

3 fig. 3 3 3 is 3 a 3 sectional 3 view 3 in 3 the 3 direction 3 a 3- 3 a 3 of 3 fig. 3 2 3, 3 and 3 includes 3 the 3 whole 3 of 3 the 3 remover 3 spray 3 gun 3 3 3 and 3 the 3 whole 3 of 3 the 3 internal 3 remover 3 partition 3 plate 3 6 3, 3 the 3 spray 3 gun 3 branch 3 pipe 3 7 3, 3 the 3 remover 3 outlet 3 4 3, 3 and 3 the 3 remover 3 deflector 3 5 3. 3

As shown in fig. 4, the remover spray gun 3 is vertically inserted into the flue 1 at a certain distance, the distance is determined according to the cross section area of the flue 1 and is generally 50mm-200mm, the bottom of the remover spray gun 3 is at a certain distance from the bottom of the flue 1, and the direction of the flue gas is vertical to the direction of the remover spray gun 3. Fig. 5 is a cross-sectional view in the direction B-B of fig. 4, arranged perpendicular to the flue 1.