CN209568075U - A kind of system removing hydrogen sulfide in coke oven - Google Patents

Abstract

A kind of system removing hydrogen sulfide in coke oven, including rotational flow fog curtain absorption tower, shaft passes through the rotational flow fog curtain absorption tower, it is rotated synchronously by transmission mechanism and variable-frequency motor, it is fixed with several layers in shaft and gets rid of liquid bucket unit, every layer is got rid of liquid bucket unit and gets rid of liquid bucket equipped with multiple, and inlet tube is extended to across rotational flow fog curtain absorption inner wall of tower and got rid of above liquid bucket and annular screen Dropbox；Rich solution slot is connected with the leakage fluid dram on the rotational flow fog curtain absorption tower, lean liquid tank is connected to the inlet tube, primary cooler is connected to the air inlet on the rotational flow fog curtain absorption tower, demister is connected to the exhaust outlet on the rotational flow fog curtain absorption tower, getting rid of liquid bucket makes lean solution form homogeneous veil and coke-stove gas contact mass transfer, absorbs H₂S.The system structure of the removing hydrogen sulfide of the utility model is simple, and desulfuration efficiency is high, and desulfurizing tower is small in size, and treating capacity is big.

Description

A kind of system removing hydrogen sulfide in coke oven

Technical field

The utility model designs field of chemical equipment more particularly to a kind of system for removing hydrogen sulfide in coke oven.

Background technique

Desulfurization process is carried out for the hydrogen sulfide composition in industrial gasses, widely used existing wet desulphurization is main It is that hydrogen sulfide is absorbed using traditional filler tower.The tower of this technology is bulky, and plant investment is larger, and liquid follows Circular rector is big, and vapour lock is high, and driving and parking inconvenience, equipment operating cost is high, such as the patented technology that your company of German History ladder develops, abbreviation A-S method, liquid phase are flowed from above to below by gravitational field, therefore liquid film is thick, liquid speed is low, the residence time is long, causes H₂S and CO₂Quilt simultaneously Absorption is got off, and the utilization rate of alkali is caused to substantially reduce.So to reach H₂The discharge standard of S needs to reduce liquid film turbulent flow, increases Increase tower.

The rotary packed bed of Liu Youzhi team research and development generates Elevated Gravity using high-speed rotating filler, and mass transfer unit is high Degree can reduce by 1~2 order of magnitude, mass-transfer efficiency enhancing, and the production intensity of unit equipment volume improves 1~2 order of magnitude.But It is not suitable for still carrying out desulfurization, the coke-stove gas 20~50mg/ containing tar to Chu Leng workshop section, coke-oven plant treated coke-stove gas m³, 30~40g/m of benzene hydrocarbon³, naphthalene precipitating blocking filler can be generated in the process of removing hydrogen sulfide, reduces mass-transfer efficiency.

Utility model content

The purpose of this utility model is to provide a kind of rotation desulfurizing towers for optimizing structure, improve cold work at the beginning of removing coke-oven plant The efficiency of section treated hydrogen sulfide in coke oven, reduces resistance, reduces tower space, reduces investment.

The utility model is the technical scheme adopted is that a kind of system for removing hydrogen sulfide in coke oven, including eddy flow Veil absorption tower, shaft pass through the rotational flow fog curtain absorption tower, are rotated synchronously by transmission mechanism and variable-frequency motor, solid in shaft There are several layers to get rid of liquid bucket unit, every layer is got rid of liquid bucket unit and gets rid of liquid bucket equipped with multiple, gets rid of rotation described in liquid bucket unit corresponding to described surely Flow veil and absorb inner wall of tower connection ring shape screen disc, get rid of liquid bucket unit far from described, make annular screen Dropbox and get rid of liquid bucket unit it Between form circular passage, inlet tube, which passes through the rotational flow fog curtain and absorbs inner wall of tower and extend to, to be got rid of above liquid bucket and annular screen Dropbox； Rich solution slot is connected with the leakage fluid dram on the rotational flow fog curtain absorption tower, and lean liquid tank is connected to the inlet tube, primary cooler with it is described The air inlet on rotational flow fog curtain absorption tower is connected to, and demister is connected to the exhaust outlet on the rotational flow fog curtain absorption tower, the rotational flow fog curtain The revolving speed that liquid bucket is got rid of in absorption tower is 600~3000rpm.

Further, the inlet tube between lean pump and rotational flow fog curtain absorption tower is equipped with lean pump.

Further, the rich solution slot is connected by rich solution pump with regeneration tank, and the export pipeline of regeneration tank connects lean liquid tank.

Preferably, it is multiple it is described get rid of liquid bucket arranged concentric, successively stepped arrangement from top to bottom, it is equidistant that each layer gets rid of liquid bucket Arrangement, diameter are equidistantly incremented by, and lower layer gets rid of liquid barrel soleplate connection upper layer and gets rid of on the downside of liquid barrel soleplate, respectively get rid of lateral edge week on the bottom plate of liquid bucket To triangular prism block is uniformly distributed, liquid bucket barrel is respectively got rid of close to upper limb and is uniformly distributed eyelet, the diameter of the eyelet is 0.5~ 1mm, density are 39200~59200/m²。

Preferably, sieve pore is evenly distributed in the annular screen Dropbox, sieve diameter is 1~1.5mm, density 39200 ~59200/m², annular screen Dropbox inner edge, which is equipped with, encloses piece.

The desulfurizing tower that technical solution provided by the utility model provides is compared in contrast to rotary packed bed desulfurizing tower, is had following Advantage: 1. it is rotary packed bed inlet tube is arranged in shaft, shaft surface is equipped with drainage hole, and structure is complicated, and hollow turns Axis will also connect complicated transfusion system, the desulfurizing tower inlet tube of the utility model unlike this, but pass through tower wall directly to It gets rid of liquid bucket or annular screen Dropbox conveying lean solution, feed liquor structure is simple；It is atomized into 2. lean solution is got rid of liquid bucket and thrown away in the utility model Veil, with the coke-stove gas two-phase contact mass transfer flowed up, the liquid-drop diameter after atomization is 1~50 μm, mass transfer contact area Greater than the liquid film of rotary packed bed middle formation；3. lean solution veil is in homogeneously to be in contact uniformly with contact mass transfer containing coke-stove gas, two； 4. absorbing H₂Drop after S is got rid of to tower wall or annular screen Dropbox, and liquid film and the coke oven by sieve pore are formed in annular screen Dropbox Coal gas contact mass transfer；5. the desulfurizing tower of the utility model does not set packing layer, coke-stove gas and veil carry out mass transfer, thus resistance is more It is small, reduce the height and volume of desulfurizing tower.

Detailed description of the invention

Fig. 1 is the desulfurizing tower schematic cross-sectional view of the utility model embodiment 1；

Fig. 2 is the overlooking structure diagram of the utility model Fig. 1；

Fig. 3 is the backsight structural representation of the utility model Fig. 1；

Fig. 4 is the system schematic of the utility model embodiment 1；

H when Fig. 5 is A-S filler desulfurizing tower purifying coke oven gas₂S、CO₂The relational graph of absorptivity and time；

Fig. 6 is 2% ammonia solution surface H₂S saturated vapor pressure and H₂The relational graph of S content.

Specific embodiment

Below with reference to embodiment, the utility model is further described in detail, but the protection scope of the utility model is simultaneously It is without being limited thereto.

Embodiment 1

As shown in figures 1-4, the utility model relates to remove the system of hydrogen sulfide in coke oven, including rotational flow fog curtain is inhaled Tower 2 is received, shaft 10 passes through the rotational flow fog curtain absorption tower 2, rotates synchronously by transmission mechanism 20 and variable-frequency motor 30, in shaft It is fixed with two layers and gets rid of liquid bucket unit 11, every layer is got rid of liquid bucket unit and set there are four liquid bucket 13 is got rid of, and gets rid of liquid bucket unit institute corresponding to described It states rotational flow fog curtain and absorbs inner wall of tower connection ring shape screen disc 14, get rid of liquid bucket unit far from described, make annular screen Dropbox and get rid of liquid bucket Circular passage is formed between unit, inlet tube 101 extends to across rotational flow fog curtain absorption inner wall of tower and gets rid of liquid bucket and annular screen Above Dropbox；Rich solution slot 111 is connected with the leakage fluid dram 112 on the rotational flow fog curtain absorption tower, and the rich solution slot passes through rich solution pump 113 are connected with regeneration tank 114, and the export pipeline of regeneration tank connects lean liquid tank 109, and lean liquid tank is connected to the inlet tube 101, position Inlet tube between lean liquid tank and rotational flow fog curtain absorption tower is equipped with lean pump, primary cooler 115 and the rotational flow fog curtain absorption tower Air inlet 116 be connected to, demister 117 is connected to the exhaust outlet 118 on the rotational flow fog curtain absorption tower, the rotational flow fog curtain absorption tower In get rid of liquid bucket revolving speed be 800rpm.

Liquid bucket arranged concentric is got rid of described in four, successively stepped arrangement from top to bottom, each layer gets rid of liquid bucket equidistant arrangement, directly Diameter is equidistantly incremented by, and lower layer gets rid of liquid barrel soleplate connection upper layer and gets rid of on the downside of liquid barrel soleplate, respectively gets rid of circumferentially uniform on the upside of the bottom plate of liquid bucket It is distributed triangular prism block 131, liquid bucket barrel is respectively got rid of close to upper limb and is uniformly distributed eyelet 132, the diameter of the eyelet is 0.5mm, Density is 59200/m².It is evenly distributed with sieve pore in the annular screen Dropbox, sieve diameter 1mm, density is 39200/ m², annular screen Dropbox inner edge, which is equipped with, encloses piece 143.

The tri-prismoid being arranged on liquid bucket is got rid of, plays the role of stirring lean solution, lean solution is made to do centrifugal movement getting rid of in liquid bucket.

Embodiment 2

Use embodiment 1 system remove coke-stove gas hydrogen sulfide: technique coke-stove gas tolerance to be processed for 75000m³/ h, every cubic metre of coke-stove gas contain H₂S10000mg、HCN 3000mg、NH₃ 4000、CO₂55000mg temperature 25 DEG C, using containing NH₃It is sprayed for 5% ammonium hydroxide, fountain height is 800 kilograms/km³Coke-stove gas is simulated, liquid bucket unit is got rid of in unlatching, is led to Crossing frequency converter adjusting and getting rid of liquid bucket unit shaft revolving speed is 600r/min after getting rid of liquid bucket unit and stablizing (about two minutes), opens liquid Valve starts lean pump, by adjusting liquid measure to 60t/h, while opening rich solution pump, after liquid phase smooth running, opens gas phase, leads to It overregulates valve and progressively reaches 75000m³/h.Temperature is 35~40 DEG C in tower；Tower height is 4m, and tower diameter 3m, coke-stove gas is in tower Residence time is 0.7~0.8s, is free of CO in the rich solution of discharge₂, after entire process system is stablized, gas can be passed in and out Mouth carries out the detection of hydrogen sulfide content.The gas H of exhaust outlet discharge₂S concentration is 80mg/m³Hydrogen sulfide stripping rate up to 99% with On, the drop carried secretly from exhaust outlet is collected using wet-type electrostatic defroster than the drop collected using cyclone dust collectors, is examined simultaneously It surveys demister and exports concentration of liquid drops, the drop outlets concentration of wet-type electrostatic defroster is dropped than the drop outlets concentration of cyclone dust collectors Low 26%, illustrate the drop that exit gas is 1~5 μm containing partial size, lean solution throws away to form veil in getting rid of liquid bucket unit, and drop is big Small is 1~50 μm.

The utility model is made of ail-plastic materials, have good corrosion resistance, intensity are high, ontology is light-weight, it is non-aging, Structurally reasonable, the advantages that being unlikely to deform, is easy to maintain.

Claims (5)

1. a kind of system for removing hydrogen sulfide in coke oven, which is characterized in that including rotational flow fog curtain absorption tower, shaft passes through institute Rotational flow fog curtain absorption tower is stated, is rotated synchronously by transmission mechanism and variable-frequency motor, several layers is fixed in shaft and gets rid of liquid bucket unit, Every layer is got rid of liquid bucket unit and gets rid of liquid bucket equipped with multiple, gets rid of the absorption inner wall of tower connection ring of rotational flow fog curtain described in liquid bucket unit corresponding to described Shape screen disc gets rid of liquid bucket unit far from described, makes annular screen Dropbox and get rid of to form circular passage between liquid bucket unit, inlet tube is worn It crosses the rotational flow fog curtain and absorbs inner wall of tower and extend to and get rid of above liquid bucket and annular screen Dropbox；Rich solution slot and the rotational flow fog curtain absorb The leakage fluid dram of tower is connected, and lean liquid tank is connected to the inlet tube, and the air inlet on primary cooler and the rotational flow fog curtain absorption tower connects Logical, demister is connected to the exhaust outlet on the rotational flow fog curtain absorption tower, and the revolving speed that liquid bucket is got rid of in the rotational flow fog curtain absorption tower is 600 ~3000rpm.

2. the system of removing hydrogen sulfide in coke oven according to claim 1, which is characterized in that be located at lean pump and rotation The inlet tube flowed between veil absorption tower is equipped with lean pump.

3. the system of removing hydrogen sulfide in coke oven according to claim 1, which is characterized in that the rich solution slot passes through Rich solution pump is connected with regeneration tank, and the export pipeline of regeneration tank connects lean liquid tank.

4. the system of removing hydrogen sulfide in coke oven according to claim 1, which is characterized in that get rid of liquid bucket described in multiple Arranged concentric, successively stepped arrangement from top to bottom, each layer get rid of liquid bucket equidistant arrangement, and diameter is equidistantly incremented by, and liquid bucket gets rid of in lower layer Bottom plate connection upper layer is got rid of on the downside of liquid barrel soleplate, is respectively got rid of and is uniformly distributed circumferentially triangular prism block on the upside of the bottom plate of liquid bucket, respectively gets rid of liquid Bucket barrel is uniformly distributed eyelet close to upper limb, and the diameter of the eyelet is 0.5~1mm, and density is 39200~59200/m²。

5. the system of removing hydrogen sulfide in coke oven according to claim 1, which is characterized in that the annular screen Dropbox On be evenly distributed with sieve pore, sieve diameter is 1~1.5mm, and density is 39200~59200/m², annular screen Dropbox inner edge is set Have and encloses piece.