CN110193326A - A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free - Google Patents
A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free Download PDFInfo
- Publication number
- CN110193326A CN110193326A CN201910418962.1A CN201910418962A CN110193326A CN 110193326 A CN110193326 A CN 110193326A CN 201910418962 A CN201910418962 A CN 201910418962A CN 110193326 A CN110193326 A CN 110193326A
- Authority
- CN
- China
- Prior art keywords
- gas permeable
- permeable member
- mercury
- tube
- vinyl chloride
- 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
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000005457 optimization Methods 0.000 title claims abstract description 16
- 230000002194 synthesizing effect Effects 0.000 title claims description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 42
- 230000001788 irregular Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 67
- 239000010410 layer Substances 0.000 description 15
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 9
- 229910052753 mercury Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000015895 biscuits Nutrition 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0292—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds with stationary packing material in the bed, e.g. bricks, wire rings, baffles
-
- 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
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The present invention provides a kind of gas permeable members that vinyl chloride optimization reaction controlling is catalyzed and synthesized for mercury-free, gas permeable member is removably mounted at tube of convertor center, its top is higher than at the top of tube of convertor and 1~10cm of filled layer, its distance from bottom tube of convertor 50~180cm of bottom, diameter are the 20%~70% of tube of convertor diameter；Percent opening is 10%~80%, unstripped gas into gas permeable member flows downward along gas permeable member axial direction, the air hole of gas permeable member is passed through to external diffusion in radial direction simultaneously, into annular space catalyst bed, thus it can improve contact path of the unstripped gas with catalyst, keep catalyst bed reaction uniform, so as to improve converter cata bed axial Temperature Distribution radial from inside to outside with tubulation internal catalyst bed layer from top to bottom；Be conducive to improve converter heat exchanger tube effective use area, reduce temperature runaway phenomenon, extend catalyst service life, reduce reformer bed layer resistance, improve the utility of production of catalyst and device.
Description
Technical field
Vinyl chloride field is catalyzed and synthesized the present invention relates to mercury-free, more particularly to a kind of for mercury-free to catalyze and synthesize vinyl chloride excellent
Change the gas permeable member of reaction controlling.
Background technique
Domestic acetylene method technique generallys use the mercury chloride of load on the activated carbon as catalyst, reacts anti-in fixed bed
It answers in device and carries out.Since mercury chloride has stronger volatility, mercury has high toxicity again, therefore is caused using mercuric chleride catalyst
Serious mercury is lost and mercury pollution.For the requirement for adapting to environmental protection, acetylene and hydrogen chloride synthesis vinyl chloride thereof must use mercury-free
Catalyst.
During catalyst without mercury synthesis vinyl chloride thereof, for high activity catalyst without mercury, since activity is higher, reaction
Speed is fast, reaction heat point is concentrated, and concentrates on top after entering converter and reacts, if shifting thermal effect is bad, will lead to
React hot spot bed hot-spot nearby, will cause catalyst without mercury when serious and be damaged, influence catalyst without mercury activity and
Service life, to influence normal production.
Summary of the invention
In consideration of it, the present invention provides a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free,
Gas permeable member is set in tubulation, after unstripped gas enters the shell and tube converter by top, by a certain percentage, partially enters ring
Gap catalyst bed, partially enters the gas permeable member, and the unstripped gas into gas permeable member is axial along the gas permeable member
Direction flows downward, at the same radial direction pass through the gas permeable member air hole to external diffusion, into annular space catalyst bed
Layer improves contact path of the unstripped gas with catalyst, keeps catalyst bed reaction uniform, improves converter bed axis from top to bottom
To with tubulation internal catalyst bed layer radial Temperature Distribution from inside to outside；It can be in favor of reducing temperature runaway phenomenon, extending catalyst makes
With the service life, reformer bed layer resistance is reduced, improves the utility of production of catalyst and device.
The technical scheme is that realized by following measures: one kind catalyzing and synthesizing vinyl chloride optimization for mercury-free
The gas permeable member of reaction controlling, the gas permeable member shape are elongate, and the gas permeable member is removably mounted at converter column
Tube hub, the gas permeable member top is higher than at the top of the tube of convertor and 1~10cm of filled layer, the gas permeable member bottom
Apart from the 50~180cm of tube of convertor bottom；The gas permeable member diameter be the tube of convertor diameter 20%~
70%；The percent opening of the gas permeable member is 10%~80%；The gas permeable member layer structure can stop catalyst granules into
Enter the inside of gas permeable member, i.e., the aperture of gas permeable member is less than cylindrical catalyst diameter or the hole of gas permeable member is small
Minimum dimension on irregular catalyst any direction.
Further, the gas permeable member at least one composition single can be also possible to more bunchys and constitute, break
Face is arbitrary shape, can be circle, rectangle, polygon or other irregular shapes, axial ventilative with radial direction.
Further, the gas permeable member is screen casing, and the screen casing is single-layer or multi-layer cartridge structure.
Further, the gas permeable member is bourdon tube.
Further, the gas permeable member is irregular gas permeable member.
Further, the percent opening of the gas permeable member is constant from the top down or echelon increases.
Further, the gas permeable member is made of high temperature resistant, corrosion-resistant, the indeformable material of radial direction.
Vinyl chloride optimization reaction controlling is catalyzed and synthesized for mercury-free the beneficial effects of the present invention are: the present invention provides one kind
Gas permeable member, gas permeable member is set in tubulation, after unstripped gas enters the shell and tube converter by top, by certain ratio
Example partially enters annular space catalyst bed, partially enters the gas permeable member, the unstripped gas into gas permeable member is described in
Gas permeable member axial direction flows downward, while the air hole for passing through the gas permeable member in radial direction enters to external diffusion
Annular space catalyst bed, first is that improving the contact conditions of unstripped gas and catalyst；Second is that keep catalyst bed reaction uniform up and down,
Improve converter bed axial Temperature Distribution radial from inside to outside with tubulation internal catalyst bed layer from top to bottom；Fly third is that reducing
Warm phenomenon extends catalyst service life；Fourth is that reducing reformer bed layer resistance；Fifth is that improving the production effect of catalyst and device
With；Gas permeable member is apart from the shell and tube tube of convertor 50~180cm of bottom simultaneously, to guarantee the conversion ratio of unstripped gas.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in embodiment will be made below
Simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1, which is that the present invention is a kind of, catalyzes and synthesizes the structural schematic diagram that vinyl chloride optimizes the screen casing of reaction controlling for mercury-free；
Fig. 2, which is that the present invention is a kind of, catalyzes and synthesizes the structural representation that vinyl chloride optimizes the bourdon tube of reaction controlling for mercury-free
Figure；
Fig. 3, which is that the present invention is a kind of, catalyzes and synthesizes the structure that vinyl chloride optimizes the irregular air-permeable member of reaction controlling for mercury-free
Schematic diagram；
Fig. 4, which is that the present invention is a kind of, catalyzes and synthesizes the single irregular air-permeable member section that vinyl chloride optimizes reaction controlling for mercury-free
Face schematic diagram.
Fig. 5 is that a kind of more bunchys for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free of the present invention are constituted irregularly
Air-permeable member schematic cross-section.
Wherein, 1. screen casing；2. filled layer；3. tube of convertor；4. catalyst without mercury；5. bourdon tube；6. irregular ventilative
Component.
Specific embodiment
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free, the gas permeable member shape is thin
Long shape, the gas permeable member are removably mounted at 3 center of tube of convertor, are higher than the converter at the top of the gas permeable member and arrange
3 top of pipe and filled layer 2 are 1~10cm, 3 50~180cm of bottom of tube of convertor described in the gas permeable member distance from bottom；Institute
State 20%~70% that gas permeable member diameter is 3 diameter of tube of convertor；The percent opening of the gas permeable member be 10%~
80%；The gas permeable member layer structure can stop 4 particle of catalyst without mercury to enter the inside of gas permeable member, i.e. gas permeable member
Aperture be less than the hole of cylindrical catalyst diameter or gas permeable member and be less than on irregular catalyst any direction most
Small size.
Specifically, the gas permeable member at least one composition single can be also possible to more bunchys and constitute, section
For arbitrary shape, circle, rectangle, polygon or other irregular shapes can be, it is axial ventilative with radial direction.
Preferably, as shown in Figure 1, the gas permeable member is screen casing 1, the screen casing is single-layer or multi-layer cartridge structure, material
Matter is carbon steel, and caliber is φ 18mm, wall thickness 1mm, pipe range L=2000mm (tube of convertor height presses 3000mm), the sieve
The screen-aperture of pipe is φ 2mm, using equilateral triangle arrangement, pitch of holes 3mm.
Preferably, as shown in Fig. 2, the gas permeable member is bourdon tube 5, the bourdon tube diameter phi 16mm, flight lead is
2.5mm, length L=2000mm (tube of convertor height presses 3000mm).The bourdon tube is made of steel wire, and steel wire is straight
Diameter is 2.0mm.
Preferably, as shown in Fig. 3, Fig. 4 and Fig. 5, the gas permeable member is irregular gas permeable member 6, described irregular saturating
Gas part material is biscuit stock, and equivalent diameter is φ 18mm, can be single (as shown in Figure 4) or several radicula bunchys
It constitutes (as shown in Figure 5), irregular gas permeable member length L=2000mm (tube of convertor height presses 3000mm).
Specifically, the percent opening of the gas permeable member is constant from the top down or echelon increases.
Specifically, the gas permeable member is made of high temperature resistant, corrosion-resistant, the indeformable material of radial direction.
In practical applications, after unstripped gas enters the shell and tube converter by top, by a certain percentage, partially enter ring
Gap catalyst bed, partially enters the gas permeable member, and the unstripped gas into gas permeable member is axial along the gas permeable member
Direction flows downward, at the same radial direction pass through the gas permeable member air hole to external diffusion, into annular space catalyst bed
Layer improves contact path of the unstripped gas with catalyst, keeps catalyst bed reaction uniform, improve converter from top to bottom it is axial with
Tubulation internal catalyst bed layer radial Temperature Distribution from inside to outside；Thus temperature runaway phenomenon is reduced, catalyst service life, drop are extended
Low reformer bed layer resistance improves the utility of production of catalyst and device.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free, it is characterised in that: the ventilative structure
Part shape is elongate, and the gas permeable member is removably mounted at tube of convertor center, is higher than institute at the top of the gas permeable member
It states at the top of tube of convertor and 1~10cm of filled layer, tube of convertor bottom 50 described in the gas permeable member distance from bottom~
180cm；The gas permeable member diameter is the 20%~70% of the tube of convertor diameter；The percent opening of the gas permeable member is
10%~80%；The hole of the gas permeable member is less than the minimum dimension on catalyst any direction.
2. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: the gas permeable member at least one composition, and section is arbitrary shape, axial ventilative with radial direction.
3. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: the gas permeable member is screen casing, and the screen casing is cartridge structure.
4. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: the gas permeable member is bourdon tube.
5. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: the gas permeable member is irregular gas permeable member.
6. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: the percent opening of the gas permeable member is constant from the top down.
7. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: echelon increases the percent opening of the gas permeable member from the top down.
8. a kind of gas permeable member for catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free as described in claim 1, special
Sign is: the gas permeable member is made of high temperature resistant, corrosion-resistant, the indeformable material of radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418962.1A CN110193326A (en) | 2019-05-20 | 2019-05-20 | A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418962.1A CN110193326A (en) | 2019-05-20 | 2019-05-20 | A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110193326A true CN110193326A (en) | 2019-09-03 |
Family
ID=67752928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910418962.1A Pending CN110193326A (en) | 2019-05-20 | 2019-05-20 | A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110193326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029005A (en) * | 2021-11-30 | 2022-02-11 | 华东理工大学 | Catalyst radial distribution accumulation method and axial reactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546217A (en) * | 2003-12-12 | 2004-11-17 | 华东理工大学 | Catalytic reforming and catalytic dehydrogenation centrifugal type fixed bed radial reactor |
| CN201144199Y (en) * | 2007-10-12 | 2008-11-05 | 上海工程化学设计院有限公司 | Converter for chloroethylene synthesis |
| US20090139400A1 (en) * | 2005-12-05 | 2009-06-04 | Eidgenossische Materialprufungs- Und Forschung- Sanstalt Empa | Diffuser For Exhaust Gas Cleaning Systems |
| CN101730581A (en) * | 2007-07-04 | 2010-06-09 | 阿梅尼亚·卡萨莱股份有限公司 | Wall system for catalytic beds of synthesis reactors and relative production process |
| CN211302999U (en) * | 2019-05-20 | 2020-08-21 | 陕西金泰氯碱化工有限公司 | Air permeable member for optimized reaction control of mercury-free catalytic synthesis of chloroethylene |
-
2019
- 2019-05-20 CN CN201910418962.1A patent/CN110193326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546217A (en) * | 2003-12-12 | 2004-11-17 | 华东理工大学 | Catalytic reforming and catalytic dehydrogenation centrifugal type fixed bed radial reactor |
| US20090139400A1 (en) * | 2005-12-05 | 2009-06-04 | Eidgenossische Materialprufungs- Und Forschung- Sanstalt Empa | Diffuser For Exhaust Gas Cleaning Systems |
| CN101730581A (en) * | 2007-07-04 | 2010-06-09 | 阿梅尼亚·卡萨莱股份有限公司 | Wall system for catalytic beds of synthesis reactors and relative production process |
| CN201144199Y (en) * | 2007-10-12 | 2008-11-05 | 上海工程化学设计院有限公司 | Converter for chloroethylene synthesis |
| CN211302999U (en) * | 2019-05-20 | 2020-08-21 | 陕西金泰氯碱化工有限公司 | Air permeable member for optimized reaction control of mercury-free catalytic synthesis of chloroethylene |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029005A (en) * | 2021-11-30 | 2022-02-11 | 华东理工大学 | Catalyst radial distribution accumulation method and axial reactor |
| CN114029005B (en) * | 2021-11-30 | 2024-01-30 | 华东理工大学 | Catalyst radial distribution stacking method and axial reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100460311C (en) | Hydrogen producing device and fuel cell system with the same | |
| CA2824785C (en) | Improved stackable structural reactors | |
| CN100363101C (en) | Composite metal chloride catalyst and its production process | |
| CN110193326A (en) | A kind of gas permeable member catalyzing and synthesizing vinyl chloride optimization reaction controlling for mercury-free | |
| WO2007100811A3 (en) | Platinum and platinum based alloy nanotubes as electrocatalysts for fuel cells | |
| TW200603475A (en) | Ruthenium-rhodium alloy electrode catalyst and fuel cell comprising the same | |
| WO2003092093A3 (en) | Fuel cell electrode employing porous graphite film, membrane-electrode assembly and fuel cell | |
| US7195742B2 (en) | Preferential oxidation reactor and process | |
| US20200139325A1 (en) | Reforming device and reforming system | |
| CN101952022B (en) | Isothermal chemical reactor with plate heat exchanger | |
| CN110180469A (en) | A kind of reaction control method catalyzing and synthesizing vinyl chloride with gas permeable member optimization mercury-free | |
| CN211302999U (en) | Air permeable member for optimized reaction control of mercury-free catalytic synthesis of chloroethylene | |
| CN102784603A (en) | Gas distributor and vinyl acetate synthesis reactor comprising the same | |
| CN203123947U (en) | Axial-radial reactor structure for sulfur-resisting conversion process | |
| CN207422709U (en) | Improved hydrogen distribution system in metal hydride reactor | |
| CN208608308U (en) | Fuel cell suitable for unmanned plane | |
| CN214131114U (en) | Nitrogen humidifying device | |
| CN207538903U (en) | A kind of ternary catalytic converter assembly being easily installed | |
| CN204921108U (en) | Automobile exhaust's catalytic conversion device | |
| CN214528151U (en) | Multi-pipe uniform distribution type vapor deposition furnace based on well type gas furnace | |
| CN211660010U (en) | Stainless steel catalyst carrier suitable for catalytic combustion reaction | |
| CN219898076U (en) | Cyclone device of reaction tower | |
| CN213011984U (en) | Energy-saving synthetic tower internals device | |
| CN211487180U (en) | Catalytic converter with substrate having pore structures with different densities | |
| CN219954472U (en) | Pipeline bracket |
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 |