阅读说明：本技术 一种用于克劳斯装置上的尾气硫磺液滴回收罐 (Tail gas sulfur liquid drop recovery tank for Claus device ) 是由 谢春雷 朱子阳 于 2021-01-15 设计创作，主要内容包括：本发明公开了一种用于克劳斯装置上的尾气硫磺液滴回收罐,它包括筒体,所述筒体上下方设有上封头和下封头,筒体侧壁上有尾气进口管,筒体内侧设有除沫器和冷却器,在上封头上设尾气出口管,下封头上设有液硫排放管。通过在罐体内部装置丝网除沫器收集硫磺液滴,在丝网除沫器的下方再装二级冷却器对硫磺蒸汽进行冷却,达到较好的收集效果,带硫的尾气从罐体的下部侧边进气,再从罐体的顶部排放,硫磺液滴即可通过收集后从罐体底部排出,达到了回收的效果,硫磺回收装置的硫回收率大于98%,能够达标排放,取得了很好的使用效果。(The invention discloses a tail gas sulfur droplet recovery tank for a Claus device, which comprises a cylinder body, wherein an upper end enclosure and a lower end enclosure are arranged at the upper part and the lower part of the cylinder body, a tail gas inlet pipe is arranged on the side wall of the cylinder body, a demister and a cooler are arranged at the inner side of the cylinder body, a tail gas outlet pipe is arranged on the upper end enclosure, and a liquid sulfur discharge pipe is arranged on the lower end enclosure. Collect the sulphur liquid drop through removing the foam breaker at jar internal device silk screen, the below repacking secondary cooler that removes the foam breaker at the silk screen cools off sulphur steam, reach better collection effect, the tail gas of taking sulphur admits air from the lower part side of jar body, discharge from the top of jar body again, the sulphur liquid drop can be discharged from jar body bottom after collecting, the effect of retrieving has been reached, sulphur recovery rate of recovery unit is greater than 98%, can discharge to reach standard, fine result of use has been gained.)

1. The utility model provides a tail gas sulphur liquid drop recovery tank for on claus device which characterized in that: the device comprises a barrel (6), wherein an upper end enclosure (10) and a lower end enclosure (11) are arranged on the upper portion and the lower portion of the barrel (6), a tail gas inlet pipe (5) is arranged on the side wall of the barrel (6), a demister (4) and a cooler (2) are arranged on the inner side of the barrel (6), a tail gas outlet pipe (3) is arranged on the upper end enclosure (10), and a liquid sulfur discharge pipe (8) is arranged on the lower end enclosure (11).

2. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 1, characterized in that: the demister (4) is positioned at the upper part of the cylinder body (6), the specification is 40-100, the size of the wire mesh is 0.1x0.40mm, the thickness of the wire mesh layer is 150mm, the number of the laid wire mesh layers is 30-50, and the horizontal inclination is 1-2 degrees.

3. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 1, characterized in that: the cooler (2) is positioned below the demister (4) and above the tail gas inlet pipe (5).

4. The off-gas sulphur droplet recovery tank for use on a claus plant according to claim 1 or 3, characterized in that: the cooler (2) comprises a first-stage cooler (21) and a second-stage cooler (22), wherein the first-stage cooler (21) is located below the second-stage cooler (22) and is arranged in a staggered mode.

5. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 4, characterized in that: the primary cooler (21) comprises a first inlet pipe (211), a first outlet pipe (214) and a plurality of sections of first coil pipes (213), the first inlet pipe (211) and the first outlet pipe (214) are connected with the first coil pipes (213) through flanges (215), the first coil pipes (213) are finned pipes, and the first coil pipes (213) are connected to the first support (212) through first pipe clamps (216).

6. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 4, characterized in that: the secondary cooler (22) comprises a second inlet pipe (221), a second outlet pipe (224) and a plurality of sections of second coil pipes (223), the second inlet pipe (221) and the second outlet pipe (224) are connected with the second coil pipes (223) through flanges (215), the second coil pipes (223) are finned tubes, the second coil pipes (223) are connected to a second support (222) through second pipe clamps (226), and the second support (222) is located on the upper portion of the first support (212).

7. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 6, characterized in that: the central axis of the second coil (223) is not coincident with the central axis of the first coil (213) in the vertical direction.

8. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 1, characterized in that: the lower part of the cylinder (6) and the outer side of the lower end enclosure (11) are provided with a jacket (7), heating steam is introduced into the jacket (7), and the bottom of the jacket (7) is provided with a condensed water discharge pipe (9).

9. The tail gas sulfur droplet recovery tank for use on a claus plant of claim 1, characterized in that: a manhole (1) is arranged on the cylinder body (6).

Technical Field

The invention relates to a Claus device, in particular to a tail gas sulfur liquid drop recovery tank for the Claus device, and belongs to the technical field of sulfur recovery equipment.

Background

In recent years, Claus sulfur recovery devices used for various acid gases are increasingly widely applied, and the sulfur recovery rate of the sulfur recovery device required by design institutions is more than 97 percentVariable-regime operation of acid gases and H in inter-operation₂S：SO₂Various operation errors caused by measurement lag of the gas ratio meter enable the recovery rate of sulfur in the device to be only about 95%, and the sulfur recovery rate is far away from the design requirement.

To put an end to H₂S is directly discharged into the atmosphere, some Claus devices are additionally provided with tail gas incineration devices at the back, and a small amount of H in tail gas is treated by incineration₂S, although a waste heat boiler is additionally arranged behind the incinerator for recovering the waste heat of the tail gas, the tail gas incinerator needs to be burnt by peroxide to ensure environment-friendly emission, and the cost of fuels (natural gas, dimethyl ether and diesel) used for high-temperature incineration is certainly greatly increased.

Because the tail gas incinerator uses the fuel gas combustion mode to remove a small amount of H in the tail gas₂S, due to uncontrollable reaction in the incinerator, part H in the incinerator is further enabled₂S also generates sulfur (gas sulfur and liquid sulfur) which is directly discharged into the subsequent process, if the sulfur is not recovered, when the flue gas is discharged into the atmosphere, sulfur-containing dust causes pollution to the environment, which is the existing problem.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a tail gas sulphur liquid drop recovery jar for on claus device, collect the sulphur liquid drop through removing the foam breaker at jar internal device silk screen, below repacking secondary cooler at the silk screen removes the foam breaker cools off sulphur steam, reach better collection effect, the tail gas of taking sulphur admits air from the lower part side of jar body, discharge from the top of jar body again, the sulphur liquid drop can be through collecting the back and discharge from jar body bottom, the effect of retrieving has been reached, the above-mentioned problem that exists has effectually been solved.

The technical scheme of the invention is as follows: the utility model provides a tail gas sulphur liquid drop recovery tank for on claus device, it includes the barrel, below is equipped with upper cover and low head on the barrel, has tail gas import pipe on the barrel lateral wall, and the barrel inboard is equipped with demister and cooler, establishes the tail gas outlet pipe on upper cover, is equipped with the liquid sulphur delivery pipe on the low head.

The demister is positioned at the upper part of the cylinder body and is 40-100 in specification, the size of the wire mesh is 0.1x0.40mm, the thickness of the wire mesh layer is 150mm, the number of the laid wire mesh layers is 30-50, and the laid wire mesh layers are horizontally inclined by 1-2 degrees.

The cooler is located the below of demister and is located the top of tail gas import pipe.

The cooler comprises a first-stage cooler and a second-stage cooler, wherein the first-stage cooler is located below the second-stage cooler and is arranged in a staggered mode.

The primary cooler comprises a first inlet pipe, a first outlet pipe and a plurality of first sections of coils, the first inlet pipe and the first outlet pipe are connected with the first coils through flanges, the first coils are finned tubes, and the first coils are connected to a first support through a first pipe clamp.

The secondary cooler comprises an inlet pipe II, an outlet pipe II and a plurality of sections of coil pipes II, the inlet pipe II and the outlet pipe II are connected with the coil pipes II through flanges, the coil pipes II are finned tubes, the coil pipes II are connected to a support II through pipe clamps II, and the support II is located on the upper portion of the support I.

The central axis of the second coil pipe is not coincident with the central axis of the first coil pipe in the vertical direction.

The lower part of the cylinder body and the outer side of the lower end enclosure are provided with jackets, heating steam is introduced into the jackets, and the bottom of each jacket is provided with a condensed water discharge pipe.

A manhole is arranged on the cylinder body.

The invention has the beneficial effects that: compared with the prior art, by adopting the technical scheme of the invention, the sulfur droplets are collected by the wire mesh demister arranged in the tank body, the secondary cooler is arranged below the wire mesh demister to cool sulfur steam, a better collection effect is achieved, tail gas with sulfur is fed from the side edge of the lower part of the tank body and is discharged from the top of the tank body, the sulfur droplets can be discharged from the bottom of the tank body after being collected, the recovery effect is achieved, the sulfur recovery rate of the sulfur recovery device is more than 98%, the sulfur recovery device can reach the standard and can be discharged, and a good use effect is achieved.

Drawings

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

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the construction of the cooler of the present invention;

FIG. 4 is a schematic view of a primary cooler of the present invention;

FIG. 5 is a schematic diagram of the structure of the two-stage cooler of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

Example 1: as shown in attached figures 1-5, the tail gas sulfur droplet recovery tank for the Claus device comprises a cylinder body 6, an upper end enclosure 10 and a lower end enclosure 11 are arranged on the upper portion and the lower portion of the cylinder body 6, a tail gas inlet pipe 5 is arranged on the side wall of the cylinder body 6, a demister 4 and a cooler 2 are arranged on the inner side of the cylinder body 6, a tail gas outlet pipe 3 is arranged on the upper end enclosure 10, and a liquid sulfur discharge pipe 8 is arranged on the lower end enclosure 11.

Furthermore, the demister 4 is positioned at the upper part of the cylinder 6, the specification is 40-100, the size of the wire mesh is 0.1x0.40mm, the thickness of the wire mesh layer is 150mm, the number of the laid wire meshes is 30-50, and the horizontal inclination is 1-2 degrees.

Further, the cooler 2 is located below the demister 4 and above the exhaust gas inlet pipe 5.

Further, the cooler 2 includes a primary cooler 21 and a secondary cooler 22, and the primary cooler 21 is located below the secondary cooler 22 and is arranged in a staggered manner.

Further, the primary cooler 21 comprises a first inlet pipe 211, a first outlet pipe 214 and a plurality of sections of first coil pipes 213, wherein the first coil pipes 213 are connected between the first inlet pipe 211 and the first outlet pipe 214 through flanges 215, the first coil pipes 213 are finned pipes, and the first coil pipes 213 are connected to the first bracket 212 through first pipe clamps 216.

Further, the secondary cooler 22 comprises a second inlet pipe 221, a second outlet pipe 224 and a plurality of sections of second coils 223, the second coils 223 are connected between the second inlet pipe 221 and the second outlet pipe 224 through the flanges 215, the second coils 223 are finned tubes, the second coils 223 are connected to the second brackets 222 through second pipe clamps 226, and the second brackets 222 are located on the upper portions of the first brackets 212.

Further, the central axis of coil two 223 is vertically misaligned with the central axis of coil one 213. Reach the dislocation and arrange, improved the effect of abundant heat transfer, improve the collection effect of people to the sulphur greatly.

Further, a jacket 7 is arranged at the lower part of the cylinder 6 and the outer side of the lower end enclosure 11, heating steam is introduced into the jacket 7, and a condensed water discharge pipe 9 is arranged at the bottom of the jacket 7. The sulfur can be effectively prevented from hardening through the heating effect of the steam, thereby achieving the effect of high-efficiency discharge.

Further, a manhole 1 is arranged on the cylinder 6. The manhole 1 is an installation inlet and outlet of the wire mesh demister on one hand, and on the other hand, a maintainer can enter the tank body from the manhole to perform inspection and maintenance work.

The working principle of the invention is as follows:

1. and inertial recovery, namely reducing the flow velocity of the flue gas from 20m/s to less than 5m/s, so that larger-particle liquid drops (more than 50 mu m) in the flue gas can be recovered inertially.

2. The temperature of the flue gas is reduced to 180 ℃ and 160 ℃ by using a finned tube heat exchanger, namely a cooler, which is arranged in a cross flow manner in the device, so that sulfur gas in the flue gas is cooled into sulfur liquid drops, and then the sulfur liquid drops are collected and recovered.

3. A primary wire mesh demister (316L 40 x 100) is arranged behind the fin heat exchanger, and sulfur liquid drops with the diameter of more than 8 mu m in the flue gas are recycled.

The device of the invention has the advantages that the functions of inertia, temperature reduction, foam removal and the like are completed in one device to trap sulfur liquid drops, and the finned tube heat exchanger is utilized: firstly, the sulfur-containing tail gas generates baffling deformation in the motion track of the fin, and sulfur liquid drops generate inertia and gather on the cooling fin for gathering; and the tail gas provides cooling heat exchange temperature of the finned tube heat exchanger and is reduced to about 160 ℃, partial gas sulfur in the high-temperature tail gas is converted into sulfur droplets, and the desulfurization efficiency of the third-stage wire mesh demister is improved. The tail gas speed at the inlet of the recovery tank is suddenly reduced (from 25m/s to below 5 m/s) to achieve the effect of flash evaporation, and on the other hand, the cooling coil is a finned tube, so that the cooling and quenching functions are achieved, and the heat exchange efficiency is improved. The primary trapping of sulphur droplets is improved. The lower part of the recovery tank is wrapped with a jacket cooler to increase inertia cooling collection. Realize the generation of 4-level recovery in one set of device. Can be widely applied to a system which is not favorable for recovering because the temperature of the tail gas is higher (200-.

Collect the sulphur liquid drop through removing the foam breaker at jar internal device silk screen, the below repacking secondary cooler that removes the foam breaker at the silk screen cools off sulphur steam, reach better collection effect, the tail gas of taking sulphur admits air from the lower part side of jar body, discharge from the top of jar body again, the sulphur liquid drop can be discharged from jar body bottom after collecting, the effect of retrieving has been reached, sulphur recovery rate of recovery unit is greater than 98%, can discharge to reach standard, fine result of use has been gained.

The present invention is not described in detail, but is known to those skilled in the art. Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.