CN108126744A - The regeneration technology of preparing ethylbenzene from dry gas catalyst - Google Patents
The regeneration technology of preparing ethylbenzene from dry gas catalyst Download PDFInfo
- Publication number
- CN108126744A CN108126744A CN201711478772.6A CN201711478772A CN108126744A CN 108126744 A CN108126744 A CN 108126744A CN 201711478772 A CN201711478772 A CN 201711478772A CN 108126744 A CN108126744 A CN 108126744A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- dry gas
- dry
- roasting
- preparing ethylbenzene
- 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
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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/90—Regeneration or reactivation
-
- 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
- B01J38/00—Regeneration or reactivation of catalysts, in general
-
- 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
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/02—Heat treatment
-
- 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
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
- B01J38/60—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using acids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
Abstract
The invention discloses the regeneration technologies of the preparing ethylbenzene from dry gas catalyst in catalyst regeneration techniques field, include the following steps：a）Decaying catalyst is placed in the nitric acid or phosphoric acid of 10 30% concentration and impregnates by pickling, adjusts rotating speed of agitator, after washing 1h, changes water after backwashing and washs, so three times；b）It is dry, for immersion catalyst is avoided to be sintered in roasting process, air-dried under condition of natural ventilation, ensure water content below 20%；c）Roasting analyzes collection of illustrative plates according to TPO the and TG DTC of decaying catalyst sample, determines its best charcoal temperature, and thus controls heating rate, temperature range, the material transmission rate in roaster；d）Detection as requested, detects the physicochemical properties such as heap density, specific surface, side pressure strength and the conversion ratio of regenerative agent, manufacture is dispensed after qualified.By the method for making charcoal, the carbon distribution being attached in 08 catalyst surfaces of SEB and duct in active component is removed so that renewing catalyst activity.
Description
Technical field
The present invention relates to the regeneration technologies of catalyst regeneration techniques field, more particularly to preparing ethylbenzene from dry gas catalyst.
Background technology
Preparing ethylbenzene from dry gas catalyst（Such as SEB-08）Key component is modified nano-ZSM-5 molecular sieve, to ethylbenzene
Selectivity is very high.But still having the generation of some byproducts in actual production, a part of ethylene reacts the more alkyl of generation with ethylbenzene
Oligomerisation reaction occurs for component, a part of ethylene, generates propylene and butylene, and propylene and butylene are divided into does not react the more propyl benzene of generation with benzene
And butylbenzene, butylbenzene and ethylene, benzene further react, the heavier component of generation, such as：Diphenyl methane, diphenylethane and other
Bicyclic component, under the high temperature conditions, be easily carbonized these substances coking on ZSM-5 catalyst voids surface.Coke gradually covers
In catalyst surface or ZSM-5 ducts are blocked, ZSM-5 catalyst is made slowly to inactivate.
Invention content
The object of the present invention is to provide the regeneration technologies of preparing ethylbenzene from dry gas catalyst, by the method for making charcoal, remove SEB-08
The carbon distribution being attached in catalyst surface and duct in active component so that renewing catalyst activity, and make its physical and chemical performance with
New agent is basically identical, meets it and continues the requirement of production application.
The object of the present invention is achieved like this：The regeneration technology of preparing ethylbenzene from dry gas catalyst, includes the following steps：
a）Decaying catalyst is placed in the nitric acid or phosphoric acid of 10-30% concentration and impregnates by pickling, adjusts rotating speed of agitator, washs 1h
Afterwards, it changes water after backwashing to wash, so three times；
b）It is dry, for immersion catalyst is avoided to be sintered in roasting process, air-dried under condition of natural ventilation, ensure water content
Less than 20%；
c）Roasting analyzes TPO the and TG-DTC collection of illustrative plates of decaying catalyst sample, determines its best charcoal temperature, and thus control
Heating rate, temperature range, material transmission rate in roaster processed；
d）Detection, as requested, detects the physicochemical properties such as heap density, specific surface, side pressure strength and the conversion ratio of regenerative agent, qualified
Packing manufacture afterwards.
Compared with prior art, the beneficial effects of the present invention are：By the method for making charcoal, SEB-08 catalyst surfaces are removed
And the carbon distribution in active component is attached in duct so that renewing catalyst activity, and make its physical and chemical performance and new agent basic one
It causes, meets it and continue the requirement of production application.
Description of the drawings
Fig. 1 is the thermal multigraph of the sample of inactivation.
Specific embodiment
Using TPO and TG-DTC the analysis collection of illustrative plates of inactivation sample shown in FIG. 1 as reference, the final temperature for determining roasting is
550 degrees Celsius, the regeneration technology of preparing ethylbenzene from dry gas catalyst includes the following steps：
a）Decaying catalyst is placed in the nitric acid or phosphoric acid of 10-30% concentration and impregnates, adjusts rotating speed of agitator, washs 1h by pickling
Afterwards, it changes water after backwashing to wash, so three times；
b）It is dry, for immersion catalyst is avoided to be sintered in roasting process, air-dried under condition of natural ventilation, ensure water content
Less than 20%；
c）Roasting analyzes collection of illustrative plates according to the TPO of decaying catalyst sample and TG-DTC, determines its best charcoal temperature, and by
Heating rate, temperature range, material transmission rate in this control roaster；
d）Detection, as requested, detects the physicochemical properties such as heap density, specific surface, side pressure strength and the conversion ratio of regenerative agent, qualified
Packing manufacture afterwards.
Wherein, step b, c is handled using the meshbeltfurnace of 50-60m long, and the mixed of O2/N2 volume ratios is set in stove
Atmosphere is closed, the O2/N2 volume ratios in stove include the following steps close to the O2/N2 volume ratios in air：The first step, first close
The region of burner sets 80-200 degrees Celsius of temperature, is then purged with air, time control is in 1h；Second step, then rise
Temperature is heated to 300 degrees Celsius, and time control is in 1h；Third walks, then is warming up to 400 degrees Celsius and is heated,
Time control is in 0.5-1h；4th step is warming up to 500 degrees Celsius of progress constant temperature processing, is then purged with air, time control
System is in 0.5-1h；4th step is cooled to 400 degrees Celsius and is handled, and time control is in 1h；5th step is cooled to 300 degrees Celsius
It is handled, then time control is come out of the stove in 1h.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing to performing creative labour
A little to replace and deform, these are replaced and deformation is within the scope of the present invention.
Claims (1)
1. the regeneration technology of preparing ethylbenzene from dry gas catalyst, it is characterised in that：Include the following steps：
a）Decaying catalyst is placed in the nitric acid or phosphoric acid of 10-30% concentration and impregnates by pickling, adjusts rotating speed of agitator, washs 1h
Afterwards, it changes water after backwashing to wash, so three times；
b）It is dry, it is air-dried under condition of natural ventilation, ensures water content below 20%；
c）Roasting, is analyzed according to TPO the and TG-DTC collection of illustrative plates of decaying catalyst sample, determines its best charcoal temperature,
And thus control roaster in heating rate, temperature range, material transmission rate；
d）Detect the physicochemical properties such as heap density, specific surface, side pressure strength and the conversion ratio of regenerative agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711478772.6A CN108126744A (en) | 2017-12-29 | 2017-12-29 | The regeneration technology of preparing ethylbenzene from dry gas catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711478772.6A CN108126744A (en) | 2017-12-29 | 2017-12-29 | The regeneration technology of preparing ethylbenzene from dry gas catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108126744A true CN108126744A (en) | 2018-06-08 |
Family
ID=62393777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711478772.6A Pending CN108126744A (en) | 2017-12-29 | 2017-12-29 | The regeneration technology of preparing ethylbenzene from dry gas catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108126744A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597842A (en) * | 2014-11-20 | 2016-05-25 | 中国石油化工股份有限公司 | Regeneration method of ethylbenzene catalyst |
| CN105665038A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Deactivated ethylbenzene catalyst regeneration method |
| CN105665002A (en) * | 2016-03-17 | 2016-06-15 | 中国天辰工程有限公司 | Method for regenerating deactivated titanium silicon molecular sieve catalyst |
-
2017
- 2017-12-29 CN CN201711478772.6A patent/CN108126744A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597842A (en) * | 2014-11-20 | 2016-05-25 | 中国石油化工股份有限公司 | Regeneration method of ethylbenzene catalyst |
| CN105665038A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Deactivated ethylbenzene catalyst regeneration method |
| CN105665002A (en) * | 2016-03-17 | 2016-06-15 | 中国天辰工程有限公司 | Method for regenerating deactivated titanium silicon molecular sieve catalyst |
Non-Patent Citations (2)
| Title |
|---|
| 童保军: ""利用干气中稀乙烯制乙苯工艺路线的选取"", 《安徽化工》 * |
| 陈天文等: ""干气制乙苯结炭沸石催化剂烧炭再生研究"", 《燃料化学学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106241803B (en) | A method of active carbon being made using waste tyre pyrolytic carbon black | |
| WO1996040839A1 (en) | Process for producing low-boiling oil from waste plastics containing phthalic polyester and/or polyvinyl chloride | |
| CN101428235B (en) | Regeneration method of molecular sieve catalysts | |
| CA2644600A1 (en) | Reactor and reactor system for high temperature and high pressure reactions | |
| CN107961744A (en) | It is a kind of to prepare propylene, the method for C4 hydro carbons and its device | |
| CN202754917U (en) | Device for producing low carbon olefin from oxy-compound | |
| CN104098094B (en) | A kind of activated carbon adsorbing hydrogen phosphide and preparation method thereof | |
| CN108126744A (en) | The regeneration technology of preparing ethylbenzene from dry gas catalyst | |
| CN106669774A (en) | Preparation method and application of modified Y molecular sieve | |
| CN107603668B (en) | Method for producing light aromatic hydrocarbon by acetylene trimerization | |
| CN104475149B (en) | A kind of preparation method of tungsten oxide modified micropore molecular sieve shape-selective catalyst | |
| RU2520982C1 (en) | Method of carbonisation of viscose fibrous materials in process of obtaining carbon fibres | |
| CN108570658B (en) | Chemical vapor deposition furnace | |
| CN105948777B (en) | A kind of density is 0.5~0.8g/cm3Carbon/carbon compound material preparation method | |
| US8513149B2 (en) | Method for drying regenerated catalyst in route to a propane dehydrogenation reactor | |
| CN104549211B (en) | A kind of support type Er2o3catalyst and the application in catalyzing cellulose hydrolysis lactic acid thereof | |
| CN106582787B (en) | A kind of preparation method of titanium oxide modified micropore molecular sieve shape-selective catalyst | |
| CN102489342B (en) | Catalytic cracking regenerated catalyst system and gas collecting method | |
| CN105780195A (en) | Carbon fiber making technology | |
| CN110156012A (en) | Active carbon and the method for preparing active carbon using recycled wood materials | |
| CN104894588A (en) | Method for removing greasy dirt on metal surface | |
| CN110922291A (en) | Method for producing propylene by using bio-based ethanol and butanol mixed solution | |
| CN206204179U (en) | A kind of system that benzene is produced with biomass and acetylene | |
| CN106635085A (en) | System and method for treating biomass | |
| CN104437617A (en) | Regeneration method of molecular sieve type carbon deposited catalyst |
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: 20180608 |