WO2019006936A1

WO2019006936A1 - Improved entrainment separator of demister

Info

Publication number: WO2019006936A1
Application number: PCT/CN2017/108593
Authority: WO
Inventors: 秦松
Original assignee: 南通锐深环保科技有限公司
Priority date: 2017-07-06
Filing date: 2017-10-31
Publication date: 2019-01-10
Also published as: CN207237488U

Abstract

An improved entrainment separator of a demister comprises a support frame and blades (10). The support frame comprises a circular support ring (1), a plurality of parallel upper positioning strips (2) fixed on an upper edge of the support ring (1), and a plurality of parallel lower positioning strips (3) fixed on a lower edge of the support ring (1), wherein the upper positioning strips (2) are parallel to the lower positioning strips (3). The blade (10) has a thickness of 0.5 mm, and comprises an upper straight plate (4), an upper inclined plate (5), an intermediate straight plate (6), a lower inclined plate (7), and a lower straight plate (8). Surfaces of the upper inclined plate (5), the intermediate straight plate (6), and the lower inclined plate (7) have a plurality of curved triangular, raised patterns disposed at intervals in a gas flow direction. Multiple slots are disposed at intervals on an edge of the upper straight plate (4) and an edge of the lower straight plate (8). The blades (10) are fastened in parallel between the upper positioning strips and the lower positioning strips (2, 3) via the slots. A position-limiting plate (11) limits the distance between adjacent blades (10) to 23 mm.

Description

Droplet dispenser for improved mist eliminator

Technical field

The utility model relates to a mist eliminator, in particular to a droplet dispenser of an improved demister.

Background technique

In the wet desulfurization process, the gas treated by the absorption tower entrains a large amount of droplets, and if these slurry droplets are not removed, they are deposited in the downstream equipment of the absorption tower to form hard scale, causing clogging and accelerating corrosion of the equipment. In the process of recycling the desulfurization system, the desulfurization tower acts as a gas-liquid contact device, and the phenomenon of entrainment of the mist is widespread. In order to reduce the droplets of the gas behind the tower to a lower level, and ensure the long-term operation of the blower and the subsequent sections, a mist trap is added to the pipeline connecting the gas outlet of the desulfurization tower and the main gas pipeline to increase the gas entrainment after desulfurization. Capture effect.

The mist eliminator naturally produces a certain resistance to the airflow through the pipe while the droplets are removed, and the current mist eliminator cannot achieve a better balance between the effect of removing the droplets and the resistance to the airflow.

Utility model content

Purpose of the utility model: In order to solve the defects of the prior art, a droplet dispenser of an improved mist eliminator is provided, which can solve the problem that the metal orifice plate of the above structure has two layers of corrugated passages when the upper and lower layers are interleaved and stacked. It is a horny and technical problem that significantly increases fluid resistance and pressure drop.

Technical Solution: A liquid droplet dispenser of an improved mist eliminator disclosed in the present invention comprises a support frame and a plurality of blades, and the support frame comprises a circular support ring, which is fixed on the upper edge of the support ring An upper positioning strip disposed in parallel, and a plurality of parallel positioning lower fixing strips fixed to a lower edge of the support ring, wherein the upper positioning strip and the lower positioning strip are parallel to each other; the blade has a thickness of 0.5 mm, which comprises an upper straight plate and an upper plate The inclined plate, the middle straight plate, the lower inclined plate and the lower straight plate; the upper straight plate, the middle straight plate and the lower straight plate are both parallel to the axis of the support ring, and the upper inclined plate is connected between the upper straight plate and the middle straight plate, and is in the middle The straight plates are connected at an angle of 50 degrees, and the lower inclined plates are connected between the middle straight plate and the lower straight plate and are at an angle of 50 degrees with the middle straight plate. The upper inclined plate, the middle straight plate and the lower inclined plate surface have a plurality of triangles. The curved lines of the bends are arranged at intervals along the air flow direction, and the edges of the upper straight plate and the lower straight plate are spaced apart from each other by a plurality of card slots, and the blades are parallelly inserted between the upper and lower positioning bars through the card slots, and Positioning Welded and fixed to each other vertically adjacent two vanes by the stopper plate to the two blade pitch limit 23mm, the limiting plate ends snap into the lock bar and the lock bar and fixed by welding.

The limiting plate has two kinds, one width is 23 mm, and the other width is 11.5 mm. For a small-sized separator, a 23 mm wide limiting plate is used to ensure a spacing of 23 mm between the blades, for a large size. The separator is a multi-stage assembly with 23mm and 11.5mm limit plates in each section to ensure a 23mm spacing between the blades after assembly.

The utility model further comprises a limiting structure comprising a pressure plate and an end plate welded integrally at both ends, the whole is U-shaped, the end plate has a threaded hole, and the end plates on both sides are caught between the blades, and the bolts are passed through the threaded holes. Both ends of the bit structure resist the tower wall to prevent liquid separation Move up.

In order to improve the demisting efficiency of the defogger, the utility has done a lot of experimental research on the number of stages of the defogger, the bending angle and the blade spacing. Generally, the more the number of stages of the defogger, the higher the demisting efficiency, but the efficiency of the system will increase the resistance and the energy consumption will increase greatly. Therefore, the number of stages of the folding demister is two to three. The selection of the demister blade pitch is essential to ensure the defogging efficiency and maintain the stable operation of the defogging system. The blade spacing is large, the defogging efficiency is low, the flue gas is severely watered, and the defogging efficiency is lower. The blade spacing is too small. In addition to increasing the energy consumption, the flushing effect is also reduced. The blade is prone to scaling and clogging, and eventually the system is shut down. The blade number of the utility is two stages, and the blade pitch is set to 23 mm.

According to this spacing, the blade bending angle can improve the defoaming efficiency, and the defoaming efficiency of the droplets of 10 micrometers can reach 95%, while the droplet dedusting efficiency of 20 micrometers can reach 100%.

Advantageous Effects: A droplet dispenser of an improved mist eliminator disclosed in the present invention is suitable for vertical airflow, and the airflow discharged from the droplet enters the chamber (between the two blades) to achieve airflow. Defogging has the following beneficial effects:

The use of 0.5mm thick blades greatly reduces the amount of material used, saving costs, and the surface of the embossed surface can increase the strength of the blade, while using the droplets to impinge on the surface of the blade due to inertial forces, increasing the impact of tiny droplets on the blade. The number of times, thereby forming a liquid film, which then flows down by gravity and discharges, increasing the droplet separation effect.

DRAWINGS

Figure 1 is a plan view of the structure of the present invention;

Figure 2 is a side cross-sectional view of the present invention;

Figure 3 is a side view of the blade of the present invention;

Figure 4 is a front elevational view of the blade of the present invention;

Fig. 5 is a partial enlarged view of Fig. 4;

Detailed ways

The technical solutions of the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

As shown in FIGS. 1 to 5, a droplet dispenser of an improved mist eliminator according to the present invention includes a support frame and a blade 10, wherein the support frame includes a circular support ring 1 and is fixed to the support ring. a plurality of upper positioning strips 2 disposed in parallel on the upper edge, and a plurality of parallel positioning strips 3 fixed in the lower edge of the support ring, wherein the upper positioning strip and the lower positioning strip are parallel to each other, the upper positioning strip and the lower positioning The strip is a U-shaped structure;

The blade has a thickness of 0.5 mm, and comprises an upper straight plate 4, an upper inclined plate 5, a middle straight plate 6, a lower inclined plate 7 and a lower straight plate 8; the upper straight plate, the middle straight plate and the lower straight plate are parallel to the axis of the support ring; The inclined plate is connected to the upper straight plate and the middle Between the straight plates, and at an angle of 50 degrees with the middle straight plate; the lower inclined plate is connected between the middle straight plate and the lower straight plate and is at an angle of 50 degrees with the middle straight plate, the upper inclined plate, the middle straight plate and The outer side surface of the lower sloping plate has a concave-convex road 9 , and the concave-convex texture is a plurality of triangular-shaped convex protrusions arranged at intervals along the air flow direction, and the edges of the upper straight plate and the lower straight plate have a hem, and the upper and lower sides The edge spacing is provided with a plurality of card slots, and the blades 10 are mounted in parallel between the upper and lower positioning strips through the card slots, and are welded and fixed perpendicularly to the upper and lower positioning strips.

There is a limiting plate 11 between two adjacent blades, and the upper and lower ends of the limiting plate 11 are respectively clamped in the U-shaped structure of the upper and lower positioning strips, and at the same time welded integrally with the limiting plate, the limiting plate has two width structures, respectively 23 mm. And 11.5mm, when assembling a small-sized dispenser, only 23mm limit plates are used for limiting between the blades, and when assembling a large-sized dispenser, considering the convenient transportation, it is divided into multiple sections. Assembled, used in combination of 23mm and 11.5mm in each section, 11.5 is set at both ends, in the multi-stage assembly, two 11.5 flats are formed 23, thus ensuring that the spacing between the two blades is always 23mm, combined with the entire blade size The structure ensures the entire defoaming effect.

After the liquid separator is installed in the tower, in order to prevent it from moving upward, a limit structure is installed at the upper end thereof, and is composed of a pressure plate 13 and an end plate 12, and the end plate 12 is welded to the both ends of the pressure plate 13 as a whole U-shaped, the end The plate is between the blades, and the surface has a threaded hole. The two ends of the limiting structure are pressed against the tower wall through the bolt through the threaded hole, thereby restraining the separator below and preventing the upward movement.

The droplet separator of the improved mist eliminator disclosed in the utility model is configured to fix the position of the upper positioning bar and the lower positioning bar by using the mold, and sequentially turn the blade and the limiting plate into the upper order. A baffle plate is integrally formed between the positioning strip and the lower positioning strip, and the limiting plate and the positioning strip are welded and fixed, and then the supporting ring is sleeved into the whole of the baffle, and the upper positioning strip and the lower positioning strip are welded to the support ring. .

The technical content and the technical features of the present invention have been disclosed as above. However, those skilled in the art may still make various substitutions and modifications without departing from the spirit of the present invention based on the disclosure of the present invention. Therefore, the scope of protection of the present invention should be The invention is not limited to the embodiments disclosed, but includes various alternatives and modifications without departing from the scope of the invention.

Claims

A droplet dispenser of a modified mist eliminator comprising a support frame and a plurality of blades, wherein the support frame comprises a circular support ring fixed on a plurality of parallel arranged upper edges of the support ring a positioning strip, and a plurality of parallel positioning lower fixing strips fixed to the lower edge of the support ring, wherein the upper positioning strip and the lower positioning strip are parallel to each other; the blade has a thickness of 0.5 mm, and includes an upper straight plate, an upper inclined plate, and an intermediate straight plate. a lower inclined plate and a lower straight plate; the upper straight plate, the middle straight plate and the lower straight plate are both parallel to the axis of the support ring, and the upper inclined plate is connected between the upper straight plate and the middle straight plate, and is at an angle of 50 degrees with the middle straight plate The lower inclined plate is connected between the middle straight plate and the lower straight plate and is at an angle of 50 degrees with the middle straight plate. The upper inclined plate, the middle straight plate and the lower inclined plate surface have a plurality of triangularly bent protrusions. The lines are arranged at intervals along the air flow direction, and the edges of the upper straight plate and the lower straight plate are spaced apart from each other by a plurality of card slots, and the blades are vertically inserted between the upper and lower positioning bars through the card slots, and are vertically welded to the upper and lower positioning bars. solid , Two adjacent blades by the stopper plate to the two blade pitch limit 23mm, the limiting plate ends snap into the lock bar and the lock bar and fixed by welding.
A liquid droplet dispenser of a modified mist eliminator according to claim 1, wherein said limiting plate has two types, one having a width of 23 mm and the other having a width of 11.5 mm. The size of the separator, the width of 23mm limit plate to ensure that the spacing between the blades is 23mm, for large-size separators, multi-stage assembly, each section with 23mm and 11.5mm limit plate to ensure that The spacing between the blades after assembly was 23 mm.
The liquid droplet dispenser of the improved mist eliminator according to claim 1, further comprising a limiting structure comprising a pressure plate and an end plate welded integrally at both ends, the whole being U-shaped, the end The plate has a threaded hole, and the end plates on both sides are caught between the blades, and the two ends of the limiting structure are pressed against the tower wall through the bolt through the threaded hole to prevent the liquid separator from moving up.