CN112439363A - Propylene ammonia distributor - Google Patents
Propylene ammonia distributor Download PDFInfo
- Publication number
- CN112439363A CN112439363A CN201910836631.XA CN201910836631A CN112439363A CN 112439363 A CN112439363 A CN 112439363A CN 201910836631 A CN201910836631 A CN 201910836631A CN 112439363 A CN112439363 A CN 112439363A
- Authority
- CN
- China
- Prior art keywords
- propylene
- ammonia
- distributor
- raw material
- material gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- GLAKNHGQBRSLIO-UHFFFAOYSA-N azane;prop-1-ene Chemical compound N.CC=C GLAKNHGQBRSLIO-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 7
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 4
- 238000009827 uniform distribution Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/002—Nozzle-type elements
Abstract
The invention relates to an ammonia propylene distributor, which comprises a main pipe connected with a raw material gas inlet and branch pipes communicated with the main pipe and used for shunting the raw material gas at equal intervals; the nozzle comprises a first part and a second part which are connected in sequence, an included angle is formed between the first part and the second part, and the second part is vertically arranged. The propylene ammonia distributor disclosed by the invention can be used for fully separating the contact of the raw materials and air, so that the reaction is more sufficient, and the conversion rate is favorably improved.
Description
Technical Field
The invention belongs to an acrylonitrile production device, and particularly relates to an ammonia propylene distributor.
Background
The acrylonitrile reactor is a core device in an acrylonitrile device, the reactor structure is a vertical skirt self-supporting fluidized bed reactor, the reactor has large geometric dimension and complex structure, the top is provided with a gas collection chamber, and a plurality of groups of cyclone separators, heat removal water pipe set systems, propylene ammonia distributors, air distribution plates and other parts are arranged in the reactor. The technology takes propylene, ammonia gas and air as raw materials to produce acrylonitrile under the action of a catalyst, main byproducts are hydrocyanic acid, acetonitrile, acrolein, carbon dioxide, carbon monoxide and the like, and a large amount of heat is released at the same time. And whether the structure of the propylene ammonia distributor is reasonable and effective is one of the factors directly influencing the normal reaction effect.
Disclosure of Invention
The invention aims to provide a propylene ammonia distributor with a reasonable structure, which ensures full reaction.
In order to achieve the above object, the present invention provides a propylene ammonia distributor, comprising:
the main pipe is connected with a raw material gas inlet, and the branch pipes are communicated with the main pipe and are used for shunting the raw material gas at equal intervals;
the nozzle comprises a first part and a second part which are connected in sequence, an included angle is formed between the first part and the second part, and the second part is vertically arranged.
According to an aspect of the present invention, the nozzle holes are provided at equal intervals on the branch pipe, the first portion is installed at the nozzle hole, and the first portion is installed obliquely on the branch pipe.
According to one aspect of the invention, the angle of inclination of the first portion is between 65 ° and 70 °.
According to one aspect of the invention, the second portion is angled at an angle of 110 ° to 115 ° to the first portion.
According to one aspect of the invention, the first portion has a dimension of 180 mm.
According to one aspect of the invention, the second portion has a dimension of 90 mm.
According to one aspect of the invention, there are two or four main pipes.
According to an aspect of the present invention, the aperture of the nozzle hole in the manifold is gradually increased along the flow direction of the source gas.
According to an aspect of the present invention, further comprising a support plate on which the branch pipe is supported and fixed by U-bolts.
According to one scheme of the invention, the propylene and the ammonia are simultaneously fed and finally uniformly sprayed out from the nozzles through the main pipe and the branch pipes, so that the effect of uniform distribution is achieved, and the reaction is more sufficient.
According to one scheme of the invention, the propylene ammonia distributor disclosed by the invention has the advantages that the nozzles are arranged according to the parameters, so that the uniform mixing degree of propylene, ammonia and air can be further improved, the reaction is more sufficient and rapid, and the conversion rate is improved.
According to one embodiment of the present invention, in order to ensure uniform distribution of propylene and ammonia, the aperture of the nozzle hole in the branch pipe is gradually increased along the flow direction of the raw material gas.
According to one scheme of the invention, the main pipe and the branch pipe are fixed by welding, and the branch pipe and the nozzle are connected by welding, so that the structural strength in a high-temperature environment is ensured. In addition, the invention adopts U-shaped bolts to further fix the branch pipes on the support plates so as to improve the stability
Drawings
FIG. 1 schematically shows a side view of a propylene ammonia distributor according to one embodiment of the present invention;
FIG. 2 is a schematic diagram showing the structure of a propylene ammonia distributor according to the present invention;
FIG. 3 schematically shows a cross-sectional view A-A of FIG. 2;
FIG. 4 schematically shows an enlarged view at I in FIG. 2;
fig. 5 is a view schematically showing a fixing structure of the branch pipe of the present invention.
The reference numerals in the drawings represent the following meanings:
1. a main pipe. 2. And (4) branch pipes. 3. A nozzle hole. 4. And (4) a nozzle. 5. U-shaped bolt.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
Referring to fig. 1 to 4, according to one embodiment of the present invention, the ammonia propylene distributor of the present invention comprises a main pipe 1, branch pipes 2, and nozzles 4.
In the invention, a main pipe 1 is connected with a raw material gas inlet, a plurality of branch pipes 2 are arranged, the plurality of branch pipes 2 are arranged at equal intervals, and the branch pipes 2 are used for shunting the raw material gas. The branch pipe 2 of the invention is provided with a nozzle hole 3, and a nozzle 4 is arranged at the nozzle hole 3. In a direction away from the branch pipe 2, the nozzle 4 comprises a first portion 41 and a second portion 42 which are connected in series, wherein an included angle exists between the first portion 41 and the second portion 42, and the second portion 42 is vertically arranged.
According to the propylene ammonia distributor disclosed by the invention, propylene and ammonia are simultaneously fed and are finally and uniformly sprayed out from the nozzles 4 through the main pipe 1 and the branch pipes 2, so that the effect of uniform distribution is achieved, and the reaction is more sufficient.
According to the concept of the present invention, the propylene ammonia distributor of the present invention can be provided with two or four main pipes 1 for feeding, in the present embodiment, one main pipe 1 is provided for feeding, and two main pipes 1 are oppositely arranged. Each main pipe 1 is connected with a plurality of branch pipes 2.
As shown in fig. 3 and 4, in the present embodiment, a plurality of nozzles 4 are attached to the branch pipe 2, and the plurality of nozzles 4 are divided into two groups and attached to the branch pipe 2 in an opposed manner. In particular, the first portion 41 of the nozzle 4 is mounted on the branch 2 at an angle of 65-70, i.e. at an angle of 65-70 to the horizontal. The length of the first portion 41 is 180 mm. The second portion 42 is vertically disposed and 90 mm in length and is angled at an angle of 110-115 deg. to the first portion 41.
According to the propylene ammonia distributor disclosed by the invention, the nozzles 4 are arranged according to the parameters, so that the uniform mixing degree of propylene, ammonia and air can be further improved, the reaction is more sufficient and rapid, and the conversion rate is improved.
In the present invention, in order to ensure uniform distribution of propylene and ammonia, the aperture of the nozzle hole 3 in the branch pipe 2 is gradually increased along the flow direction of the raw material gas.
In the invention, the main pipe 1 and the branch pipe 2 are fixed by welding, and the branch pipe 2 and the nozzle 4 are connected by welding, so as to ensure the structural strength in a high-temperature environment. In addition, as shown in fig. 5, the present invention further fixes the branch pipes 2 to the support plate using U-bolts 5 to improve stability.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The propylene ammonia distributor is characterized by comprising a main pipe connected with a raw material gas inlet and branch pipes communicated with the main pipe and used for shunting the raw material gas at equal intervals;
the nozzle comprises a first part and a second part which are connected in sequence, an included angle is formed between the first part and the second part, and the second part is vertically arranged.
2. The ammonia propylene distributor of claim 1, wherein the nozzle holes are equally spaced on the branch pipe, the first portion is mounted at the nozzle holes, and the first portion is obliquely mounted on the branch pipe.
3. The ammonia propylene distributor of claim 2, wherein the angle of inclination of the first section is between 65 ° and 70 °.
4. The ammonia propylene distributor of claim 3, wherein the angle between the second portion and the first portion is in the range of 110 ° to 115 °.
5. The propylene ammonia distributor of any one of claims 1-4, wherein the first portion has a size of 180 mm.
6. The propylene ammonia distributor of claim 5, wherein the second portion has a dimension of 90 mm.
7. The ammonia propylene distributor of claim 1, wherein there are two or four main tubes.
8. The propylene ammonia distributor according to claim 2, wherein the aperture of the nozzle holes on the branch pipe is gradually increased along the flow direction of the raw material gas.
9. The ammonia propylene distributor according to claim 1, further comprising a support plate, wherein the branch pipes are supported on the support plate and fixed to the support plate by U-bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910836631.XA CN112439363A (en) | 2019-09-05 | 2019-09-05 | Propylene ammonia distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910836631.XA CN112439363A (en) | 2019-09-05 | 2019-09-05 | Propylene ammonia distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112439363A true CN112439363A (en) | 2021-03-05 |
Family
ID=74733557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910836631.XA Pending CN112439363A (en) | 2019-09-05 | 2019-09-05 | Propylene ammonia distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112439363A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0889759A (en) * | 1994-09-19 | 1996-04-09 | Mitsubishi Heavy Ind Ltd | Device for injecting gaseous ammonia |
| CN1519296A (en) * | 2003-09-02 | 2004-08-11 | 中国石油化工集团公司 | Distributor of catalyzer to be generated in fluid catalytic cracking unit |
| CN202097045U (en) * | 2011-06-09 | 2012-01-04 | 攀钢集团有限公司 | Ejection device and nozzles thereof |
| CN102350216A (en) * | 2011-09-06 | 2012-02-15 | 浙江蓝天求是环保集团有限公司 | Tripod nozzle device of thermal power station ammonia-injection and denitration system |
| CN103007750A (en) * | 2012-12-17 | 2013-04-03 | 浙江天地环保工程有限公司 | Ammonia spraying device for flue gas denitrification |
| CN204672139U (en) * | 2015-04-10 | 2015-09-30 | 中国华电工程(集团)有限公司 | For the ammonia-gas spraying device of SCR method denitrating flue gas |
| CN106492712A (en) * | 2015-09-06 | 2017-03-15 | 中国石油化工股份有限公司 | Feed distributor |
| US20170165625A1 (en) * | 2013-12-04 | 2017-06-15 | Basf Se | Gas distribution nozzle |
| CN106955644A (en) * | 2016-01-08 | 2017-07-18 | 中国石油化工股份有限公司 | The feed distributor of the fluidized-bed reactor reacted for ammoxidation |
| CN206707353U (en) * | 2017-05-18 | 2017-12-05 | 华润电力（海丰）有限公司 | A kind of coal yard purging system |
| CN206746285U (en) * | 2017-02-16 | 2017-12-15 | 中国大唐集团科技工程有限公司 | A kind of new ammonia-spraying grid for SCR denitration system |
| CN207887140U (en) * | 2018-01-11 | 2018-09-21 | 南京金凌石化工程设计有限公司 | A kind of improved arrangement tubular type gas distributor |
| CN208526226U (en) * | 2018-07-12 | 2019-02-22 | 山东格润内泽姆环保科技有限公司 | A kind of spray equipment of protection against erosion supporting beam |
| CN208694708U (en) * | 2018-06-06 | 2019-04-05 | 天津亚泰环保设备有限公司 | Ammonia-spraying grid device for denitrating flue gas |
| CN208786152U (en) * | 2018-12-30 | 2019-04-26 | 北京美斯顿科技开发有限公司 | Ejection assemblies and ozone denitrating system |
-
2019
- 2019-09-05 CN CN201910836631.XA patent/CN112439363A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0889759A (en) * | 1994-09-19 | 1996-04-09 | Mitsubishi Heavy Ind Ltd | Device for injecting gaseous ammonia |
| CN1519296A (en) * | 2003-09-02 | 2004-08-11 | 中国石油化工集团公司 | Distributor of catalyzer to be generated in fluid catalytic cracking unit |
| CN202097045U (en) * | 2011-06-09 | 2012-01-04 | 攀钢集团有限公司 | Ejection device and nozzles thereof |
| CN102350216A (en) * | 2011-09-06 | 2012-02-15 | 浙江蓝天求是环保集团有限公司 | Tripod nozzle device of thermal power station ammonia-injection and denitration system |
| CN103007750A (en) * | 2012-12-17 | 2013-04-03 | 浙江天地环保工程有限公司 | Ammonia spraying device for flue gas denitrification |
| US20170165625A1 (en) * | 2013-12-04 | 2017-06-15 | Basf Se | Gas distribution nozzle |
| CN204672139U (en) * | 2015-04-10 | 2015-09-30 | 中国华电工程(集团)有限公司 | For the ammonia-gas spraying device of SCR method denitrating flue gas |
| CN106492712A (en) * | 2015-09-06 | 2017-03-15 | 中国石油化工股份有限公司 | Feed distributor |
| CN106955644A (en) * | 2016-01-08 | 2017-07-18 | 中国石油化工股份有限公司 | The feed distributor of the fluidized-bed reactor reacted for ammoxidation |
| CN206746285U (en) * | 2017-02-16 | 2017-12-15 | 中国大唐集团科技工程有限公司 | A kind of new ammonia-spraying grid for SCR denitration system |
| CN206707353U (en) * | 2017-05-18 | 2017-12-05 | 华润电力（海丰）有限公司 | A kind of coal yard purging system |
| CN207887140U (en) * | 2018-01-11 | 2018-09-21 | 南京金凌石化工程设计有限公司 | A kind of improved arrangement tubular type gas distributor |
| CN208694708U (en) * | 2018-06-06 | 2019-04-05 | 天津亚泰环保设备有限公司 | Ammonia-spraying grid device for denitrating flue gas |
| CN208526226U (en) * | 2018-07-12 | 2019-02-22 | 山东格润内泽姆环保科技有限公司 | A kind of spray equipment of protection against erosion supporting beam |
| CN208786152U (en) * | 2018-12-30 | 2019-04-26 | 北京美斯顿科技开发有限公司 | Ejection assemblies and ozone denitrating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210305 |