CN111214842A

CN111214842A - Process and device for removing light components in by-product sulfuric acid

Info

Publication number: CN111214842A
Application number: CN202010101531.5A
Authority: CN
Inventors: 吴刚; 周强; 张苏锋; 钟骏良; 孙立东; 杨东
Original assignee: Ningbo Juhua Chemical Technology Co ltd
Current assignee: Ningbo Juhua Chemical Technology Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-06-02
Anticipated expiration: 2040-02-19
Also published as: CN111214842B

Abstract

The invention discloses a process and a device for removing light components in by-product sulfuric acid, wherein the prepared methane chloride, namely the by-product sulfuric acid containing the light components, is uniformly collected and collected into a collecting barrel; after the pressure of the light component-containing by-product sulfuric acid in the material collecting barrel is increased through the booster pump, the by-product sulfuric acid is filtered by the filter and then conveyed to the flash tower for flash evaporation, an anti-blocking device for preventing mist in the light component separation process from blocking the distributor is arranged on the distributor, the light component removing process and the removing device in the by-product sulfuric acid are realized, the anti-blocking device is arranged at the spraying hole of the distributor liquid, the flow force of the airflow in the packing tower is utilized at the bottom end of the distributor by the anti-blocking device, the liquid at the spraying hole is effectively sprayed, the mist in the upward airflow in the flash tower is effectively blocked and prevented from being removed, the spraying efficiency of the liquid is improved, and the separation purity of the light component in the by-product sulfuric acid is further improved.

Description

Process and device for removing light components in by-product sulfuric acid

Technical Field

The invention relates to the technical field of removing light components in by-product sulfuric acid, in particular to a process and a device for removing light components in by-product sulfuric acid.

Background

At present, the separation is realized to the light component that dissolves in order to with methane chloride by-product sulphuric acid in the current, use the flash column to carry out effectual separation to light component impurity, and at the in-process of carrying out the separation, the distributor plays the effect that makes liquid evenly distributed at the flash column inside, however when using fishbone formula distributor, because ascending light component gas that has the entrainment is at the in-process along inside upward movement of packed tower, its entrainment is inside entering the distributor by the aperture of distributor easily, cause the inside jam of distributor easily, lead to the inside phenomenon that blocks up of distributor, thereby influence spraying of liquid on the one hand, on the other hand then influences the separation purity of by-product sulphuric acid easily. Therefore, a process and a device for removing light components in the by-product sulfuric acid are provided.

Disclosure of Invention

The invention aims to provide a process and a device for removing light components in by-product sulfuric acid, which effectively solve the problem that spray holes of a distributor are blocked by mist contained in upward airflow in a flash tower when the fishbone distributor sprays, and effectively block and prevent blockage of the mist contained in the upward airflow in the flash tower, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a process for removing light components in by-product sulfuric acid comprises the following steps;

step one, uniformly collecting the prepared methane chloride, namely the byproduct sulfuric acid containing light components, and collecting the methane chloride into a collecting barrel;

step two, after the light component-containing by-product sulfuric acid in the collecting barrel is pressurized by a booster pump, the light component-containing by-product sulfuric acid is filtered by a filter and then is conveyed to a flash tower for flash evaporation, the fishbone distributor uniformly sprays the light component-containing by-product sulfuric acid introduced into the flash tower, and meanwhile, an anti-blocking device for preventing the distributor from being blocked by mist in the light component separation process is arranged on the distributor;

and step three, connecting the top end of the flash tower with a vacuum unit, pressurizing by a tower kettle pump, so that a gas phase at the top of the tower returns to a system, returning a part of tower kettle liquid to the top of the tower for circulation, and extracting the other part of tower kettle liquid to a sulfuric acid storage tank.

The negative pressure flash tower is a packed tower, the operating pressure of the negative pressure flash tower ranges from-10 KPaG to-100 KPaG, and the operating temperature is normal temperature.

The utility model provides a light component remove device in by-product sulphuric acid, includes the collecting bucket, with the filter that the collecting bucket is connected, connect the flash column at the filter output, set up at the inside distributor of flash column, set up the vacuum unit on flash column top and set up the sulphuric acid storage tank in the flash column bottom, its characterized in that: the anti-blocking device is arranged at the output end of the distributor and comprises a guide pipe correspondingly arranged at a plurality of spraying holes at the bottom end of the distributor, a drainage piece for draining liquid is arranged in the guide pipe, a blocking piece for preventing external mist from entering is arranged outside the guide pipe, and the guide pipe is arranged so as to play a role in effectively guiding the liquid in the spraying holes.

Preferably, the drainage piece includes the water conservancy diversion mouth that sets up in the water conservancy diversion inside, water conservancy diversion mouth department is equipped with the water conservancy diversion piece, the inside through-hole that is equipped with of water conservancy diversion piece, and the water conservancy diversion piece outside is equipped with the overflow mouth, the overflow mouth communicates with the through-hole, the inside position that corresponds the overflow mouth of water conservancy diversion inside is equipped with by the overflow launder, the inside buffer spring that is equipped with of through-hole, buffer spring's one end and through-hole inner wall connection, and the buffer spring other end pass the through-hole and connect with spacing retaining ring, spacing retaining ring and honeycomb duct inner wall fixed connection through the drainage piece that is equipped with to play the effect of.

Preferably, one end of the flow guide block, which is in contact with the flow guide opening, is in a shape of a circular truncated cone, so that the flow guide block is in stable contact with the flow guide opening.

Preferably, block the piece including fixed intercommunication at the honeycomb duct location retaining ring of keeping away from distributor one end, the inside barrier plate that is provided with of location retaining ring, one side that the barrier plate kept away from the location retaining ring is equipped with the connecting piece that carries out the connection to the barrier plate, blocks the piece through being equipped with to play and carry out effectual effect of blockking to the air current that rises, and then the inside effect of further prevention fog foam entering honeycomb duct.

Preferably, the connecting piece is including installing the connecting block on the barrier plate, fixedly connected with connecting plate on the connecting block, be equipped with the recess on the retaining ring of location, and the inside fixedly connected with back shaft of recess, the back shaft outside is rotated and has been cup jointed the turning block, the turning block is connected with connecting plate fixed connection, the spacing spring of outside fixedly connected with of the one end of barrier plate is kept away from to the connecting plate, spacing spring passes the recess and is connected with the backup pad in fixedly, backup pad and retaining ring fixed connection carry out the effect of stable being connected through the connecting piece that is equipped with to play barrier plate and retaining ring of location.

Preferably, the support plate is U-shaped, so that the support plate and the positioning retainer ring can perform a stable supporting function.

Preferably, the length of the overflow groove is greater than that of the overflow port, so that the liquid in the overflow groove can stably flow into the through hole of the flow guide block from the overflow port.

Compared with the prior art, the invention has the beneficial effects that:

when the device is used, the anti-blocking device is arranged at the spraying hole of the liquid of the distributor, and the anti-blocking device effectively sprays the liquid at the spraying hole by utilizing the flow force of the airflow in the packed tower at the bottom end of the distributor, and simultaneously realizes the functions of effectively blocking and removing the anti-blocking of the mist in the upward airflow in the flash tower, so that the spraying efficiency of the liquid is improved, and the separation purity of medium and light components of the sulfuric acid byproduct is further improved.

Drawings

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

FIG. 2 is a schematic diagram of a distributor according to the present invention;

FIG. 3 is a schematic diagram of a distributor according to the present invention;

FIG. 4 is a schematic view of the inner structure of the draft tube of the present invention;

FIG. 5 is a schematic view of the structure of the blocking member of the present invention;

FIG. 6 is an enlarged view of area A in FIG. 4;

fig. 7 is an enlarged structural diagram of a region B in fig. 5.

In the figure: 1-a collecting barrel; 2-a filter; 3-a flash column; 4-a distributor; 5-a vacuum unit; 6-sulfuric acid storage tank; 7-anti-clogging means; 8-a flow guide pipe; 9-a drainage member; 10-a flow guide port; 11-a flow guide block; 12-an overflow port; 13-a through hole; 14-an overflow launder; 15-a buffer spring; 16-a limit check ring; 17-positioning the retainer ring; 18-a barrier; 19-a barrier plate; 20-a connector; 21-connecting blocks; 22-a connecting plate; 23-a groove; 24-supporting the shaft; 25-a turning block; 26-a limit spring; 27-support plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a process for removing light components in by-product sulfuric acid comprises the following steps;

The device comprises a collecting barrel 1, a filter 2 connected with the collecting barrel 1, a flash tower 3 connected with the output end of the filter 2, a distributor 4 arranged in the flash tower 3, a vacuum unit 5 arranged at the top end of the flash tower 3 and a sulfuric acid storage tank 6 arranged at the bottom end of the flash tower 3, wherein an anti-blocking device 7 is arranged at the output end of the distributor 4, the anti-blocking device 7 comprises a guide pipe 8 correspondingly arranged at a plurality of spray holes at the bottom end of the distributor 4, a drainage member 9 for guiding liquid is arranged in the guide pipe 8, the drainage member 9 comprises a guide opening 10 arranged in the guide pipe 8, a guide block 11 is arranged at the guide opening 10, one end of the guide block 11, which is in contact with the guide opening 10, is in a circular truncated cone shape, and the guide block 11 is in matched connection with the guide block 11;

a through hole 13 is arranged inside the flow guide block 11, an overflow port 12 is arranged outside the flow guide block 11, the overflow port 12 is communicated with the through hole 13, an overflow groove 14 is arranged inside the flow guide pipe 8 corresponding to the overflow port 12, the length of the overflow groove 14 is greater than that of the overflow port 12, a buffer spring 15 is arranged inside the through hole 13, one end of the buffer spring 15 is connected with the inner wall of the through hole 13, the other end of the buffer spring 15 penetrates through the through hole 13 to be connected with a limit check ring 16, the limit check ring 16 is fixedly connected with the inner wall of the flow guide pipe 8, when liquid is sprayed at the spray hole, the impact force of the liquid and the gravity of the liquid flow into the flow guide pipe 8 from the spray hole and simultaneously contact with the flow guide block 11, the flow guide block 11 is simultaneously extruded, the buffer spring 15 is compressed by the extrusion force of the flow guide block, at the moment, the position of the circular truncated cone shape of the diversion block 11 is separated from the diversion opening 10, and the liquid flows into the overflow groove 14 from the diversion opening 10 and then flows into the through hole 13 inside the diversion block 11 through the overflow groove 14, so that the liquid is sprayed;

the outer side of the draft tube 8 is provided with a blocking piece 18 for preventing external mist from entering, the blocking piece 18 comprises a positioning check ring 17 fixedly communicated with one end of the draft tube 8 far away from the distributor 4, a blocking plate 19 is arranged inside the positioning check ring 17, one side of the blocking plate 19 far away from the positioning check ring 17 is provided with a connecting piece 20 for connecting the blocking plate 19, the connecting piece 20 comprises a connecting block 21 arranged on the blocking plate 19, the connecting block 21 is fixedly connected with a connecting plate 22, the positioning check ring 17 is provided with a groove 23, a supporting shaft 24 is fixedly connected inside the groove 23, the outer side of the supporting shaft 24 is rotatably sleeved with a rotating block 25, the rotating block 25 is fixedly connected with the connecting plate 22, the outer side of one end of the connecting plate 22 far away from the blocking plate 19 is fixedly connected with a limiting spring 26, and the limiting spring 26, the supporting plate 27 is fixedly connected with the positioning retainer ring 17, and the supporting plate 27 is U-shaped;

meanwhile, when liquid flows from the through hole 13 inside the flow guide block 11 to be in contact with the stop plate 19, the stop plate 19 is extruded, so that the stop plate 19 passes through the connecting plate 22, the connecting plate 22 rotates by taking the support shaft 24 as a circle center, and the stop plate 19 is separated from the aperture inside the positioning check ring 17, so that the liquid is sprayed, and when the upward flowing power of the air flow is greater than the downward flowing power of the liquid, the stop plate 19 is stably attached to the positioning check ring 17 under the connecting acting force of the limiting spring 26 and the reverse acting force of the stop plate 19 in contact with the air flow, so that the effect of stopping the mist contained in the upward air flow is realized, and the effect of one-way circulation of the flow guide block 11 is combined, so that the anti-blocking effect of the spraying holes of the distributor 4 is further realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A process for removing light components in by-product sulfuric acid comprises the following steps;

2. The process for removing light components in by-product sulfuric acid according to claim 1, wherein: the negative pressure flash tower is a packed tower, the operating pressure of the negative pressure flash tower ranges from-10 KPaG to-100 KPaG, and the operating temperature is normal temperature.

3. The utility model provides a light component remove device in by-product sulphuric acid, includes the collecting bucket, with the filter that the collecting bucket is connected, connect the flash column at the filter output, set up at the inside distributor of flash column, set up the vacuum unit on flash column top and set up the sulphuric acid storage tank in the flash column bottom, its characterized in that: the anti-blocking device is arranged at the output end of the distributor and comprises a guide pipe correspondingly arranged at a plurality of spraying holes at the bottom end of the distributor, a drainage piece for draining liquid is arranged in the guide pipe, and a blocking piece for preventing external mist from entering is arranged outside the guide pipe.

4. The apparatus for removing light components in by-product sulfuric acid as claimed in claim 3, wherein: the drainage piece is provided with a drainage block at the position corresponding to the overflow port, a through hole is formed in the drainage block, an overflow port is formed in the outer side of the drainage block, the overflow port is communicated with the through hole, a buffer spring is arranged in the through hole, one end of the buffer spring is connected with the inner wall of the through hole, the other end of the buffer spring penetrates through the through hole to be connected with a limiting check ring, and the limiting check ring is fixedly connected with the inner wall of the drainage pipe.

5. The apparatus for removing light components in by-product sulfuric acid as claimed in claim 4, wherein: the end of the flow guide block, which is contacted with the flow guide opening, is in the shape of a circular truncated cone.

6. The apparatus for removing light components in by-product sulfuric acid as claimed in claim 3, wherein: the baffle piece comprises a positioning check ring fixedly communicated with one end of the flow guide pipe far away from the distributor, a baffle plate is arranged inside the positioning check ring, and a connecting piece for connecting the baffle plate is arranged on one side, far away from the positioning check ring, of the baffle plate.

7. The apparatus for removing light components in by-product sulfuric acid as claimed in claim 6, wherein: the connecting piece is including installing the connecting block on the barrier plate, fixedly connected with connecting plate on the connecting block, be equipped with the recess on the retaining ring of location, and the inside fixedly connected with back shaft of recess, the back shaft outside is rotated and has been cup jointed the turning block, the turning block is connected with connecting plate fixed connection, the outside fixedly connected with spacing spring of the one end of barrier plate is kept away from to the connecting plate, spacing spring passes the fixed backup pad that is connected with in the recess, backup pad and retaining ring fixed connection of location.

8. The apparatus for removing light components in by-product sulfuric acid as claimed in claim 7, wherein: the support plate is U-shaped.

9. The apparatus for removing light components in by-product sulfuric acid as claimed in claim 4, wherein: the length of the overflow groove is larger than that of the overflow port.