CN216125325U - A high-efficient defogging knockout for in tower - Google Patents

Abstract

The utility model provides a high-efficiency demisting and liquid removing device used in a tower, which comprises: and the inclined plate separation internal part and the fiber coalescence internal part are arranged on the tower internal support part along the center line of the tower cylinder body and are close to the gas phase outlet at the top of the tower cylinder body. The gas guide plate is fixedly connected with one side of the inclined plate separating internal part; the liquid guide plate is fixedly connected with one side of the lower part of the fiber coalescence internal part, and the liquid guide plate is designed to have a certain gradient. 1 layer or a plurality of layers of liquid guide grooves can be arranged in the middle of the fiber coalescence internal piece to promote liquid drainage. The anti-blocking blowing device is opposite to a gas outlet of the fiber coalescence internal member, horizontally penetrates through the outer wall of the tower cylinder body in a branch pipe mode from the outside of the tower cylinder body, and is fixedly installed in the tower. The device can realize the efficient removal of liquid drops with the size of more than 5 mu m in the mixed gas, and has the advantages of convenient maintenance, long service life, high temperature and high pressure resistance, wide application range and the like.

Description

A high-efficient defogging knockout for in tower

Technical Field

The utility model relates to a high-efficiency demisting and deliquoring device used in an industrial tower or a container. Belongs to the technical field of gas-liquid separation.

Background

The gas-liquid separation is a separation process based on the difference of physicochemical properties of gas and liquid and realized by self energy and external energy. The methods for realizing gas-liquid separation are various, gravity settling, baffling separation, centrifugal separation, wire mesh separation, filtering separation, filler separation and the like are commonly used, and steam stripping and degassing, distillation and flash evaporation, absorption and washing, adsorption and desorption are also commonly used for liquid degassing or gas liquid removal. Regardless of the separation method, the removal of liquid drops or fog drops carried in a gas phase is a key separation technology for improving the separation precision, and the fog removal liquid is widely applied to the fields of oil product hydrogenation, wet desulphurization, flue gas waste heat utilization, wet dedusting, fermentation and the like in the petrochemical industry. According to different defogging principles, the technology can be divided into gas-liquid separation defogging and deliquoring technologies such as a gravity settling type technology, a folding (baffle) type technology, a blade rotational flow type technology, a centrifugal separation type technology and the like. The gravity settling type is based on the density difference between gas phase and liquid phase (gas phase and solid phase), has the advantages of simple design, reduced resistance and the like, but has poor separation effect, can only separate large-diameter liquid drops, and has large equipment volume and high investment; the baffle plate type is a common gas-liquid separation, demisting and deliquoring mode in a flue gas desulfurization system, has the advantages of simple structure, low processing difficulty, convenient installation and the like, has obvious effect on removing liquid drops with the diameter larger than 20 mu m, has poor effect on removing liquid drops with the diameter smaller than 20 mu m, and has the defects of small operation elasticity, extreme value of separation effect and the like; the cyclone separation is completed by utilizing centrifugal force and density difference of substances, the equipment has small volume and high separation efficiency, but the device runs for a long period, and the comprehensive energy consumption is larger. The coalescence element has wide application in the fields of compressed air filtration, long-distance gas transmission, sealed gas filtration, metal cutting and the like, and is one of the most effective methods for removing extremely fine liquid drops in gas and strengthening the pre-separation effect.

At present, most of gas-liquid separators adopted in the petrochemical industry are single-stage separators and are provided with gas-liquid separator cylinders. The stripping column is typically a gas-liquid separator, which is a device for recovering absorbed solutes and separating the absorbent from the solutes to obtain regeneration. The top of stripper generally is equipped with the gas phase outlet pipe, and the bottom is equipped with the liquid phase outlet pipe, and the middle part is equipped with the feeding distributor, and feeding distributor top is equipped with the defoaming net usually. During normal operation, gas-liquid two-phase raw materials enter the tower from the feeding distributor for flash separation, stripping gas enters the tower from the bottom of the tower, is in countercurrent contact with the raw materials in the tower, is separated from the tower together with the components to be stripped at the top of the tower, and a large amount of liquid phase flows to the bottom of the tower. A large amount of gas phase carries a small amount of liquid drops to move upwards, liquid drops with different particle sizes are separated according to the difference of the height of the gas phase space between the feeding distributor and the defoaming net by means of the gravity of the liquid drops, and the gas phase after gas-liquid separation is discharged from a gas phase outlet pipe. At the same time, the demister network is able to collect entrained droplets or impurities in the remaining gas phase.

The Chinese invention patent CN102408914B discloses a process method for slowing down the foaming of a stripping tower in an aromatic extraction liquid extraction system, wherein a defoaming agent is injected into the stripping tower, so that the phenomenon of tower flushing caused by the rise of the pressure difference of a thickening tower of a foam layer of the stripping tower is avoided, and the separation effect of the stripping tower and the qualification of mixed aromatic hydrocarbon produced by a recovery tower are ensured; the utility model patent CN103641191B proposes that hydrogen sulfide in sulfur-containing sewage is removed by stripping gas of a stripping tower, so that the generation of scaling of desulfurization equipment is prevented, the desulfurization equipment can run for a long period, the process operation steps are simplified, and the energy consumption is reduced; utility model CN211676381U provides a reduce device of strip tower liquid phase ammonia nitrogen content, will not condensate through the technology condensation and send to the boiler and mix and burn, reduce the ammonia nitrogen and accumulate in the system, can improve gasification grey water system running state tail gas simultaneously and pass through the boiler burning, eliminate on-the-spot peculiar smell, satisfy the environmental protection requirement. However, the above-described in-column or in-vessel structure or separation process has two problems as follows: first, the separation effect is not good enough and the separated gas phase still contains fine droplets with a particle size of more than 30 μm. For example, in the solvent deasphalting device, a small amount of deasphalted oil or deasphalted asphalt enters a downstream air cooler and a downstream water cooler along with solvent and steam due to limited separation effect in the stripping process, the deasphalted oil or deasphalted asphalt is solidified in the condensation cooling process, and the solidified heavy oil or asphalt is adhered to the pipe wall, so that the cooling effect is influenced, and the air cooler is blocked; secondly, the height of the gas phase space is larger by utilizing gravity settling separation, and the whole size of the gas-liquid separation part is larger, so that the investment is aggravated. For example, when the gas-liquid separation column segment cylinder of the stripping column has to be integrally forged, the equipment manufacturing cost is significantly increased. Thirdly, after the equipment is put into use, the pressure drop of the defoaming net in the tower is large, the mass transfer effect is poor, the purging treatment cannot be carried out, and the long-period operation of the whole device cannot be ensured.

To date, no solution to the above problems has been proposed in the prior art. Therefore, the urgent need in the art is to develop a novel efficient demisting and deliquoring device which can enhance the gas-liquid two-phase separation effect in the tower, improve the separation efficiency, optimize the height design of the gas phase space of the tower body, reduce the load and difficulty of post-treatment, reduce the overall energy consumption of the device and prolong the operation period.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in the practical application of industrial production, in the chemical unit of the existing oil product treatment or coal gasification device, the problems of large occupied area, low separation efficiency, serious entrainment of gas and liquid phases and the like of two-phase mixed gas liquid removal equipment exist, the movement of a gravity settling part of the gas and liquid phases in a conventional tower or a container is extremely complex, the initial settling speed of liquid drops in the gravity settling part is often far less than the uniform settling speed, and some liquid drops are brought out of a gas phase outlet pipe by gas even when the liquid drops do not reach the uniform settling speed. The physical and chemical properties of the liquid drops and impurities, such as viscosity, coking, acidity and alkalinity, can increase the separation load of downstream units and even influence the selectivity of the catalyst in some process flows.

Aiming at the technical problems, the utility model solves the technical problems by the following technical scheme:

an efficient defogging and deliquoring device for use in a tower, the efficient defogging and deliquoring device comprising: a support 1-1 in the tower, a gas guide plate 1-2, a liquid guide plate 1-3, an inclined plate separation internal part 2 and a fiber coalescence internal part 3 assembly and an anti-blocking purging device 4; the device comprises a tower internal support 1-1, a sloping plate separation internal part 2, a fiber coalescence internal part 3, a liquid guide plate 1-3, an anti-blocking purging facility 4, a fiber coalescence internal part 3, a baffle ring 6-2, a baffle pipe, a baffle plate, a baffle;

the inclined plate separation internal part 2 is a primary gas-liquid separation internal part through which gas firstly passes and is formed by stacking cuboid blocks, a supporting framework 2-4 is arranged in each block, W-shaped stamping inclined plates 2-1 are adopted for orderly arrangement, and the arrangement distance is 50-100 mm; the vertex angle of the W-shaped stamping inclined plate 2-1 is about 90 degrees, a channel formed by the inclined plate forms an angle of 45 degrees or 30 degrees with the vertical direction, and a plurality of plate sheets are arranged on the plate sheets

The small drainage holes 2-2 or the thin drainage slits 2-3 with the length of about 3-5 mm and the combination of the two types of open pores, wherein the open pore ratio is 5-20%, and the thickness of the inclined plate separation internal part 2 is 100-300 mm;

the fiber coalescence internal member 3 is a secondary gas-liquid separation internal member through which gas finally passes and is formed by superposing fiber coalescence filler blocks with cuboid structures, and each fiber coalescence filler block is formed by weaving winding double-filament fibers by a supporting framework 2-4 arranged inside; the thickness of the fiber coalescence internal member 3 is 100-300 mm, wherein the porosity of the double-silk fiber weaving in the framework of the fiber coalescence internal member 3 is 60-90%;

the gas guide plate 1-2 is fixedly supported along the radial direction through section steel or reinforcing rings extending out of two sides of the tower body, the liquid guide plate 1-3 is designed to have a certain gradient of 3-5 degrees, and a plurality of liquid guide plates are arranged on the liquid guide plate 1-3

The lacrimal punctum.

The efficient demisting and deliquoring device for the tower divides the space at the top of the tower into 2 chambers, namely a gas phase rising area and a demisting and deliquoring area, through the fixed connection of the supporting piece 1-1 and the liquid guide plate 1-3 in the tower, and the fixed connection of the gas guide plate 1-2 and the upper part of the combined piece of the inclined plate separation internal piece 2 and the fiber coalescence internal piece 3, and the two chambers are respectively provided with a pressure gauge for monitoring the pressure difference of the internal pieces.

The connection of the section steel 6-1 and the check ring 6-2, the connection of the inclined plate separation internal part 2 and the gas guide plate 1-2, and the connection of the fiber coalescence internal part 3 and the liquid guide plate 1-3 are all fixed by adopting a welding or bolt connection mode.

In a preferred embodiment, a back flushing pipeline 4-1 in the anti-blocking purging device 4 is introduced from a purging medium main pipe of the device, and a branch pipe 4-2 is designed outside the tower body according to the flushing requirement and the height of separating internals of the high-efficiency demister, and can be arranged in 1 layer or more layers; each branch pipe is provided with a remote electromagnetic regulating valve, and the number of the spray headers 4-3 of each layer is calculated according to the purging range after the branch pipes 4-2 penetrate through the tower cylinder body for distribution. The spray header 4-3 can select an atomizing spray head or a non-atomizing spray head.

In another preferred embodiment, the fiber coalescing internal member 3 adopts anti-blocking measures due to different gas-liquid separation systems or physical and chemical properties of media, liquid guide grooves 3-1 with the width of 50-100 mm are arranged at different heights of the fiber coalescing internal member 3 in a blocking and stacking manner along the horizontal direction, the installation positions of the liquid guide grooves 3-1 can be calculated through the speed of droplet coalescence and the height orthogonality of the fiber coalescing internal member 3, and 1 layer or multiple layers are designed.

Compared with the structural design of other gas-liquid separators in the existing tower or container, the utility model has the main advantages that:

1. the equipment improvement method is simple and easy to implement, the structure optimization design of a conventional tower or a gas-liquid separation container is carried out according to the utility model, the gas-liquid separation efficiency before the equipment optimization is not influenced, the removal efficiency of liquid drops with the size of more than 5 mu m in a gas phase material at a gas phase outlet pipe at the top of the tower after the optimization is not less than 99.0-99.9%, and the pressure drop before and after the separation internal part of the high-efficiency demisting and knockout container is not higher than 5-10 KPa under the normal working condition.

2. The efficient demisting and deliquoring device is ingenious in structural design, the design of the flow guide internal parts changes the vertical upward flow of gas into the approximately horizontal flow of gas, the gas passes through the separation internal parts, the coalesced liquid flows downwards, the back-mixing phenomenon in the rising process of the gas flow is reduced, and the gas-liquid separation is facilitated; through the multilayer corrugated plate group, the settling separation chamber of the original gas phase space is divided into a plurality of small separation chambers to accelerate the action of gravity and shorten the rising height of liquid drops so as to improve the gas-liquid separation efficiency.

3. The combination design of the inclined plate separation internal part and the fiber coalescence internal part is used for providing a coalescence separation environment for gas demisting and liquid removing, carrying out step control on liquid drop coalescence, and strengthening the separation effect after the inclined plate internal part. The adopted coalescent fiber has stable performance, good coalescent effect, long service life and high temperature resistance of more than 420 ℃. Meanwhile, the coalescence, demisting and liquid removal area and the pressure drop are not influenced by the tower diameter, the optimal combination of coalescence and separation internal part design can be flexibly adjusted according to different gas-liquid separation systems, and the universality range is wide.

4. The blowing facility adopts the partitioned and blocked blowing, avoids blockage and simultaneously does not influence the operation of gas flow and coalescence, demisting and liquid removal.

Drawings

The objects and features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model:

FIG. 1 is a schematic diagram of an overhead high efficiency demister design used in one embodiment according to the utility model.

Wherein, 1-1: support member in the tower, 1-2: gas guide plate, 1-3: liquid guide plate, 2: inclined plate separation internals, 3: fiber coalescing internals, 4: anti-blocking purging facility, 5: trays or packing.

FIG. 2 is a schematic diagram of a stripper overhead high efficiency demister used in one embodiment according to the present invention.

Wherein, 1-1: support member in the tower, 1-2: gas guide plate, 1-3: liquid guide plate, 2: inclined plate separation internals, 3: internal fiber coalescence member, 3-1: liquid guide groove, 4-1: backwash pipeline, 7: and (4) overhauling manholes.

FIG. 3 is a schematic diagram of a stripper overhead high efficiency demister used in another embodiment according to the present invention.

Wherein, 1-1: support member in the tower, 1-2: gas guide plate, 1-3: liquid guide plate, 2: inclined plate separation internals, 3: internal member of fiber coalescence, 4-1: backwash pipeline, 7: and (4) overhauling manholes.

Fig. 4(a) is a schematic structural view of an inclined plate separating internal part according to an embodiment of the present invention, fig. 4(b) is a sectional view of a W-shaped stamped inclined plate partitioning structure (where an inclined plate channel forms an angle of 45 ° with a vertical direction), fig. 4(c) is a schematic structural view of a W-shaped stamped inclined plate opening drainage hole type, fig. 4(d) is a schematic structural view of a W-shaped stamped inclined plate opening drainage slit type, and fig. 4(e) is a schematic structural view of a combination of a W-shaped stamped inclined plate opening small hole and a fine slit.

Wherein, 2-1: w-shaped stamping inclined plate, 2-2: small liquid guide hole, 2-3: liquid guiding thin seam, 2-4: a support framework, 2-5: the structure keeps off the ring.

Fig. 5(a) is a schematic structural view of a fibrous coalescing inner member according to an embodiment of the present invention, and fig. 5(b) is a side view of the fibrous coalescing inner member in installation.

Wherein, 3-1: liquid guide groove, 3-2: fiber coalescent filler blocks, 2-4: and supporting the framework.

FIG. 6 is a schematic diagram of the structure of a support within a tower according to one embodiment of the present invention.

Wherein, 6-1: section steel, 6-2: and a retainer ring.

FIG. 7 is a schematic diagram of a backwash tube assembly of an efficient de-misting and de-misting device anti-clog purging apparatus according to an embodiment of the present invention.

Wherein, 4-2: branch pipe of purging facility, 4-3: and a spray header.

Detailed Description

The conception, the specific structure and the technical effects of the present invention are further described in detail below with reference to the accompanying drawings and examples, so that the objects, the features and the effects of the present invention can be fully understood. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, the technical characteristics of the utility model can be interactively combined on the premise of not conflicting with each other.

In order to solve the problems of large occupied area, low separation efficiency, serious entrainment of gas and liquid phases and the like of equipment such as a stripping tower, an absorption tower or a gas-liquid separation container and the like in the prior chemical unit of an oil product treatment or coal gasification device, the utility model provides a high-efficiency demisting and deliquoring device structure design used in a tower to strengthen the gas-liquid separation effect on the basis of the structure of a general tower body or a gas-liquid separation container.

As shown in fig. 1, the efficient demisting and de-liquor device of the present invention is used for modifying the stripping tower top in the stripping process of the solvent deasphalting device, and has the following specific flow and design advantages:

the gas phase material carrying heavy oil fog drops and liquid drops flows upwards from the tower plate or the filler 5 at the top layer of the stripping tower and passes through the high-efficiency demisting and liquid removing device in an approximately horizontal direction under the action of the gas guide plates 1-2, so that the gas phase rising process and the liquid drops are prevented from contacting again for mass transfer, and the gas-liquid separation is facilitated. The efficient demisting and liquid removing device consists of an inclined plate separating internal part 2 and a fiber coalescing internal part 3, wherein the inclined plate separating internal part 2 removes large liquid drops, and the fiber coalescing internal part 3 removes small fog drops and small liquid drops. Through the inclined plate separation internals 2 of installation, can shorten settling time greatly, acceleration gravity separation speed makes the oil drop of certain particle diameter because the influence of settling velocity, finally subsides to the upper surface of W type punching press swash plate 2-1 after moving a certain distance along with the air current to by the face absorption, the oil drop of being adsorbed by W type punching press swash plate 2-1 finally forms the liquid film and then forms the liquid stream, drops under the effect such as gravity, subsides to the equipment bottom, and then separates from the gaseous phase. The gas phase material separated by the inclined plate separation internal part 2 also carries a small amount of small droplets, fine separation is further carried out by the fiber coalescence internal part 3, oil droplets are captured by fiber materials and are intercepted on the surface of the material to form large liquid droplets, the separated liquid droplets are settled to the bottom of the equipment from tear holes on the liquid guide plates 1-3, and the obtained clean gas phase material is discharged from a top gas phase outlet.

Set up on the stripper barrel at high-efficient defogging knockout place and prevent stifled facility 4 that sweeps, during the device operation, change through the pressure drop and judge whether high-efficient defogging knockout blocks up, if the pressure drop increases, can utilize middling pressure superheated steam to sweep internals by going up to down subregion, will remain the oil drop of adhesion or pitch and blow down to the equipment bottom, prevent to block up fibre coalescence internals 3, do not influence the operation that gas flow and coalescence defogging take off the liquid simultaneously.

FIG. 2 is a schematic diagram of an overhead high efficiency demister of a stripping column according to one embodiment of the present invention. The middle of the top of the tower is provided with 1 set of fiber coalescence internal member 3 and 1 set of inclined plate separation internal member 2, and the supporting member 1-1 in the tower is used for fixing and bearing. The inclined plate separation internal part 2 and the fiber coalescence internal part 3 are respectively provided with a gas guide plate 1-2 and a liquid guide plate 1-3 from top to bottom, the gas phase space at the top of the equipment is divided into 2 cavities, the thickness of each part of the internal part is 100-300 mm, the height of each part of the internal part is 1000-3000 mm, the internal part is designed in a block mode according to the size of the gas phase space at the top of the tower and is installed and detached from an inspection manhole 7 of the tower in an access mode, a liquid guide groove 3-1 is arranged in the middle of the fiber coalescence internal part 3, and the liquid guide groove 3-1 can be designed into 1-3 layers after calculation through the speed of liquid drop coalescence and the height orthogonality of the fiber coalescence internal part 3. The liquid guide plate 1-3 is designed to have a certain gradient of 3-5 degrees, and a plurality of liquid guide plates 1-3 are provided with

The lacrimal punctum. And pressure gauges are respectively arranged in the two cavities of the equipment and used for monitoring the pressure difference of the internal part. The equipment is provided with 1-3 layers of back washing pipelines 4-1, and the separated internal parts are blown and swept layer by superheated steam or absorption solvent, so that the fiber coalescence internal parts 3 are prevented from being blocked.

FIG. 4(a) is an embodiment according to the present inventionIn the structural schematic diagram of the sloping plate separation internal part in the embodiment, a W-shaped stamping sloping plate 2-1 is designed in a partitioning mode, is mounted in a partitioning and stacking mode according to the rectangular structure of the external contour of the internal part, and is compressed and fixed by a support framework 2-4 and a structural baffle ring 2-5. As shown in fig. 4(b), the apex angle of the W-shaped stamped swash plate 2-1 is about 90 °, and the channel formed by the swash plate is 45 ° or 30 ° from the vertical. Fig. 4(c) - (d) are schematic diagrams of the hole pattern of one W-shaped stamping inclined plate, and as shown in the figure, a plurality of plates are arranged on the plate

The liquid guiding small hole 2-2 or the liquid guiding thin slit 2-3 with the length of about 3-5 mm and the combination of the two types of open holes, wherein the open hole rate is 5-20%.

Fig. 5(a) is a schematic structural diagram of a fiber coalescing internal member according to an embodiment of the utility model, wherein the fiber coalescing internal member 3 is designed into blocks, the fiber coalescing filler blocks 3-2 are arranged in a block-by-block overlapping manner according to a rectangular structure of the external contour of the internal member, 1 layer of liquid guide grooves 3-1 are arranged at certain intervals, and all the parts are pressed and fixed by using a supporting framework 2-4 according to the structure shown in fig. 5 (b).

Fig. 7 is a schematic diagram of the structure of the backwash pipe assembly of the anti-clogging sweeping device 4 for the efficient demisting and deliquoring apparatus according to one embodiment of the present invention. Wherein the back flushing medium is selected from medium-pressure superheated steam at 420 ℃ or an absorption solvent required by a separation tower. The back washing pipeline 4-1 is introduced by a superheated steam or solvent main pipe of the device, and the branched pipes 4-2 are designed outside the cylinder body of the equipment according to the washing requirement and the height of the separating internal parts of the high-efficiency demisting and deliquoring device, and can be arranged in 1 layer or multiple layers. Each branch pipe 4-2 is provided with a remote electromagnetic regulating valve for regulating flow and flushing sequence, and the branch pipes 4-2 are distributed according to the number of the spray headers 4-3 of each layer after entering the equipment cylinder. The number calculation and the distribution spacing of the spray headers 4-3 must ensure that no spray leakage blank point is left in the action area, and the type can be calculated according to the spray speed required by back flushing and can be selected from atomizing type spray headers or non-atomizing type spray headers.

Examples

The utility model is further illustrated below with reference to specific examples.

Example 1:

the steam stripping process of the solvent deasphalting device for the clean reconstruction project of a petrochemical company in Beijing city adopts the high-efficiency demisting and deasphalting device to treat the solvent stripping gas and steam after extracting and separating the deasphalted oil and the deoiled asphalt so as to meet the requirement of condensation and cooling of an air cooler on solvent recovery in the subsequent process.

The specific operation condition and application effect are described as follows:

1. the operation condition is as follows:

the flow rate of the mixed gas is 11500-25000 m3/h, the design operation elasticity is 50-130%, the gas phase density is 1.215-7.014 kg/m3, the compression factor is 0.9669-0.995, the operation pressure is 0.2-0.45 MPag, and the operation temperature is 222-305 ℃.

2. Design parameters of the implementation process:

the simplified structure of the equipment modification is shown in figure 2, the diameter of the cylinder body of the stripping tower is 2800mm, 1 set of fiber coalescence internal parts and 1 set of inclined plate separation internal parts are arranged at the central line position of the cylinder body of the stripping tower, and the support parts in the stripping tower are used for fixing and bearing. The inclined plate separation internal member and the fiber coalescence internal member assembly are respectively provided with a gas guide plate and a liquid guide plate from top to bottom to divide the equipment into 2 cavities, the thickness of each internal member is 150mm, the height of each internal member is 2400mm, and the internal members can be installed and detached in a blocking mode through the access manhole of the tower. Wherein the W-shaped stamping inclined plate is provided with a plurality of

The aperture ratio of (2) is 15%; the porosity of a double-filament fiber (S30408 metal wire and polytetrafluoroethylene fiber) woven in the fiber coalescence internal member is 70%, 1 layer of liquid guide groove is arranged in the middle of the internal member to facilitate liquid drainage in the coalescence separation process, the lower liquid guide plate is designed to have a certain gradient of 3-5 degrees, and the partition plate is provided with an upper opening

Has a plurality of tear holes, and the opening rate is 30 percent. The inclined plate separating internal part is S30408, and the fiber coalescing internal part isS30408+ nonmetallic composite fiber, and pressure gauges are respectively arranged in the two cavities of the equipment and used for monitoring the pressure difference of the internal part. The stripping tower cylinder is provided with 3 layers of back flushing pipes, and the internal parts are blown and swept in a layered mode by medium-pressure superheated steam at the temperature of 420 ℃, so that the internal parts are prevented from being blocked, coalesced and separated. The jet speed of the back-blowing steam is 10-20 m/s, and the spray head is a non-atomization type spray head.

3. And (4) analyzing results:

the high-efficiency demisting and deliquoring gas-liquid separator is used for reforming a deasphalted oil stripping tower and a deoiled asphalt stripping tower, the effect of removing liquid drop particles with the particle size of more than 5 mu m from a gas-phase material after structure optimization reaches more than 99.5 percent, and the separation efficiency is improved by 3 times compared with the prior stripping tower.

Example 2:

the steam stripping process of the ammonia synthesis device for coal gasification project of coal energy chemical industry company in Ullin, Shanxi applied the high-efficiency demisting and liquid removing device of the utility model to treat the mixed flash steam mainly comprising CO2, NH3 and water vapor after gasification and separation so as to meet the requirements of recycling ammonia nitrogen and reducing the content of ammonia nitrogen in the subsequent process of the system. Compared with the efficient demisting and deliquoring device in the tower provided by the embodiment 1, the device has the following differences:

1. the operation condition is as follows:

the inlet mixed flash evaporation gas mainly comprises the following components: 68% of CO2, 27% of NH3 and 5% of water vapor; the inlet gas amount is 33508kg/h, the inlet gas temperature is 135 ℃, the operation pressure is 0.8MPag, and the operation temperature is 250-280 ℃.

2. Design parameters of the implementation process:

the simplified structure of the equipment modification is shown in figure 3, the diameter of a cylinder of the stripping tower is 1600mm, 1 set of fiber coalescence internal parts and 1 set of inclined plate separation internal parts are arranged at the central line position of the cylinder of the stripping tower, and the support parts in the stripping tower are utilized for fixing and bearing. The inclined plate separation internal member and the fiber coalescence internal member assembly are respectively provided with a gas guide plate and a liquid guide plate from top to bottom so as to divide the equipment into 2 cavities, the thickness of each part of internal member is 150mm, the height of each part of internal member is 1000mm, and the internal member blocks can be installed and detached in an access way from an inspection manhole of a tower. Wherein the W-shaped stamping inclined plate is provided with a plurality of 5mm thin seams with the aperture ratio of 20 percent; double-filament fiber in fiber coalescence internal member (S30408 metal wire + glassFiber) is 60%, the design of the lower liquid guide plate has a certain gradient of 3-5 degrees, and the partition plate is provided with an upper opening

Has a plurality of lacrimal holes. The inclined plate separation internal part is made of S316L, the fiber coalescence internal part is made of S316L + polytetrafluoroethylene, and pressure gauges are respectively arranged in the two cavities of the equipment and used for monitoring the pressure difference of the internal part. The stripping tower cylinder is provided with 1 layer of back flushing pipes, and internal parts are blown and swept by high-pressure nitrogen to prevent from being blocked, coalesced and separated. The jet speed of the back-blowing nitrogen is 5-10 m/s, and the spray head is an atomization type spray head.

3. And (4) analyzing results:

the high-efficiency demisting and deliquiding gas-liquid separator is used for respectively reforming a CO2 stripping tower and an ammonia stripping tower, and the effect of removing liquid drop particles with the particle size of more than 10 mu m from the mixed gas-phase material with the optimized structure reaches more than 99.9 percent.

Example 3:

the efficient demisting and deliquoring device is used in a hydrogen sulfide removal process of a certain petroleum exploration design research institute in Clarity, Xinjiang, and carries out gas-liquid separation treatment on sulfur-containing sewage on natural gas conveyed by the efficient demisting and deliquoring device so as to meet the requirements of subsequent process equipment on clean and dry mixed hydrocarbon gas and enable desulfurization equipment to run for a long period.

The specific operation conditions and operation effects are described as follows:

1. the operation condition is as follows:

the inlet mixed hydrocarbon gas mainly comprises the following components: the natural gas without H2S was 83%, the hydrocarbon gas with H2S was 12%, and the sulfur-containing water vapor was 5%; the operation temperature is 108 ℃, the operation pressure is 0.3-0.7 MPag, and the treatment capacity is 2500-4500 m 3/h; the top liquid phase inlet is filled with sulfur-containing sewage, and the flow rate is 150-200 m 3/h.

2. Design parameters of the implementation process:

compared with the efficient demisting and deliquoring device in the tower provided by the embodiment 1 and the embodiment 2, the device mainly has the following differences: wherein the W-shaped stamping inclined plate is provided with a plurality of

The small holes and the fine seams with the thickness of 5mm are combined in a crossed manner, so that the hard scale of sulfate produced by overhigh temperature is prevented from blocking the internal parts, and the opening rate is 15 percent; the porosity of a double-wire fiber (S31603 metal wires and polypropylene fibers) woven in the fiber coalescence internal part is 65%, 2 layers of guide grooves are arranged in the middle of the internal part to facilitate liquid drainage in the separation process, the lower liquid guide plate is designed to have a certain gradient which is 3-5 degrees, and the partition plate is provided with an upper opening

The tear holes are multiple, and a defoaming net with the porosity of 40-45% is arranged below the guide plate. The inclined plate separation internal part is made of 15CrMoR, and the fiber coalescence internal part is made of 15CrMoR + nonmetal composite fiber. The desulfurizing tower cylinder is provided with 2 layers of back flushing pipes, and the internal parts are purged by medium-pressure steam to prevent from being blocked, coalesced and separated.

3. And (4) analyzing results:

through the efficient demisting and dehydrating device in the tower, H2S in the mixed hydrocarbon gas is fully separated, the requirement of a research institute on clean and dry mixed hydrocarbon gas in a natural gas conveying process is met, the sulfur content in downstream sulfur-containing sewage is reduced, and the national environment-friendly pollution discharge requirement is met.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the contents of the claims of the present application should be considered to be within the technical scope of the present invention.

All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes and modifications of the present invention can be made by those skilled in the art after reading the above teachings of the present invention, and these equivalents also fall within the scope of the present invention as defined by the appended claims.

Claims (5)

1. A high-efficient defogging knockout for use in a tower, characterized in that: the device comprises a support piece in the tower, a gas guide plate, a liquid guide plate, an inclined plate separation internal part, a fiber coalescence internal part assembly and an anti-blocking blowing facility; the anti-blocking purging device is characterized in that the supporting piece in the tower is formed by fixing profile steels which are arranged side by side on a retaining ring and is prewelded on the inner side of the tower cylinder body, the inclined plate separation internal piece and the fiber coalescence internal piece are arranged side by side at a gas phase outlet close to the top of the tower cylinder body and are vertically arranged on the supporting piece in the tower along the center line of the tower cylinder body, one side close to the upper part of the inclined plate separation internal piece is connected with a gas guide plate, one side close to the lower part of the fiber coalescence internal piece is connected with a liquid guide plate, and the anti-blocking purging device horizontally penetrates through the outer wall of the tower cylinder body and is fixedly arranged outside the tower cylinder body from one side opposite to the fiber coalescence internal piece;

the inclined plate separation internal part is a primary gas-liquid separation internal part through which gas firstly passes and is formed by stacking cuboid blocks, a supporting framework is arranged in each block, W-shaped stamping inclined plates are arranged in sequence, and the arrangement distance is 50-100 mm; the vertex angle of the W-shaped stamping inclined plate is about 90 degrees, a channel formed by the inclined plate forms an angle of 45 degrees or 30 degrees with the vertical direction, and a plurality of sheet bars are arranged on the sheet bars

The small liquid guide holes or the liquid guide slits with the length of about 3-5 mm and the combination of two types of open pores are formed, wherein the open pore ratio is 5-20%, and the thickness of the inclined plate separation internal part is 100-300 mm;

the fiber coalescence internal member is a secondary gas-liquid separation internal member through which gas finally passes and is formed by superposing fiber coalescence filler blocks with cuboid structures, and each fiber coalescence filler block is formed by weaving winding double-filament fibers by using a supporting framework arranged inside; the thickness of the fiber coalescence internal member is 100-300 mm, and the porosity of the double-silk fiber weaving in the skeleton of the fiber coalescence internal member is 60-90%.

2. The efficient demister as claimed in claim 1, wherein the gas deflector is fixedly supported radially by means of a profile steel or a retainer ring extending from both sides of the tower body, and the liquid deflector has a gradient of3 to 5 degrees, a plurality of liquid guide plates are arranged on the liquid guide plate

The lacrimal punctum.

3. The efficient demister according to claim 1, wherein the space at the top of the tower is divided into 2 chambers, from top to bottom, a gas phase rising zone and a demisting and deliquoring zone, by the fixed connection of the support member in the tower to the liquid deflector and the fixed connection of the gas deflector to the upper parts of the inclined plate separating internal member and the fiber coalescing internal member, and the two chambers are respectively provided with a pressure gauge for monitoring the pressure difference of the internal members.

4. The efficient demister according to claim 1, wherein the back-flushing pipeline in the anti-blocking purging device is introduced by a purging medium main pipe of the device, and the design of branch pipes is carried out outside the tower body according to the flushing requirement and the height of the separating internal part of the efficient demister, and 1 layer or more layers are arranged; each branch pipe is provided with a remote electromagnetic regulating valve, the branch pipes pass through the tower barrel and then are distributed according to the number of the spray headers on each layer calculated according to the purging range, and the spray headers are atomizing type spray heads or non-atomizing type spray heads.

5. The efficient defogging and liquid removing device according to claim 1, wherein a liquid guiding groove with a width of 50-100 mm is horizontally arranged at different heights of the fiber coalescence internal member blocks, the liquid guiding groove calculates the installation position of the fiber coalescence internal member through the speed of droplet coalescence and the height orthogonality of the fiber coalescence internal member, and 1 layer or more layers are designed.

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