CN107090286A - A kind of preparation method of high-temperature stable foam discharging agent - Google Patents
A kind of preparation method of high-temperature stable foam discharging agent Download PDFInfo
- Publication number
- CN107090286A CN107090286A CN201710264990.3A CN201710264990A CN107090286A CN 107090286 A CN107090286 A CN 107090286A CN 201710264990 A CN201710264990 A CN 201710264990A CN 107090286 A CN107090286 A CN 107090286A
- Authority
- CN
- China
- Prior art keywords
- mixed
- preparation
- foam discharging
- discharging agent
- temperature stable
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The present invention relates to a kind of preparation method of high-temperature stable foam discharging agent, belong to technical field of oilfield chemistry.Peach gum and water are carried out Hybrid Heating by the present invention first, through separating and concentrating, obtain peach gum coagulant liquid, again by empgen BB and deionized water Hybrid Heating, modification liquid is obtained after ammoniacal liquor regulation pH value, and mix modification liquid with peach gum coagulant liquid, obtain mixing homogenizing fluid, the hydroxypropanesulfonic acid sodium of 3 chlorine 2 and absolute ethyl alcohol are subjected to Hybrid Heating again, filtering, filtrate is mixed with petroleum ether, obtain mixed liquor, mixed liquor is then subjected to Hybrid Heating with mixing homogenizing fluid, obtain hydroxyl sulfo concentrate, finally hydroxyl sulfo concentrate and polyvinyl alcohol etc. are mixed.Bubble prepared by the present invention arranges temperature up to 120~130 DEG C, and with the rise of temperature, foaming effect will not be reduced, and the foam stabilizing time reaches 8~10min, and stability is good.
Description
Technical field
The present invention relates to a kind of preparation method of high-temperature stable foam discharging agent, belong to technical field of oilfield chemistry.
Background technology
The natural gas well is in the middle and later periods of exploitation, and because gas well itself stratum energy declines, stratum water also enters with natural gas
Enter pit shaft, built up in shaft bottom or nearly shaft bottom band, cause the gas production decline of gas well or gas well dead by water logging.At present, in order to solve
The problem of gas well is because of the influence production of stratum water, the method for use is to fill foam discharging agent into aqueous gas well, stratum water is arranged with bubble
After agent contact, by the agitation of natural gas flow, a large amount of low-density resistance aqueous foams are generated, foam takes water with air-flow from shaft bottom to ground
Pit shaft is discharged, stable yields, the purpose of volume increase is reached.
Existing foam discharging agent kind more than ten, is respectively adapted to different hydrops gas reservoirs, but they apply in general to less than 80 DEG C
Stratum and the not high gas well of condensation oil content, with the rise and the increase of condensation oil content of environment temperature, the foaming of foam discharging agent
Ability and stability can be substantially reduced, and especially the high-temperature stratum more than 100 DEG C and condensation oil content are more than in 20% gas well,
The foam that many foaming agents are produced can be disappeared in 1~2min, and foam is not produced even.Foam discharging agent is in order to reduce salinity, temperature
The influence to its discharge opeing effect is spent, substantially using anion surfactant, but general not high, the moisture of this kind of active agent content
Content accounts for 30~40%.Therefore, after mercury dropped, product viscosity loses flowability also with increasing or becoming paste；Such as
When fruit temperature reaches subzero, product will turn into hard ice cube shape, it is impossible to use.
The content of the invention
The technical problems to be solved by the invention：It is low for traditional foam discharging agent Applicable temperature, with the rise of temperature, rise
There is provided a kind of preparation method of high-temperature stable foam discharging agent for the problem of bubble ability and stability can be substantially reduced.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）Fresh peach gum and deionized water are mixed and heated, then are centrifuged, supernatant liquor is collected, supernatant is rotated
The 1/5 of original volume is evaporated to, peach gum coagulant liquid is obtained, then empgen BB is mixed with deionized water, heating water bath is simultaneously adjusted
Save and modification liquid is obtained after pH to 8.5,25~30min of insulation reaction, by isometric ratio, peach gum coagulant liquid is mixed with modification liquid,
Matter, which is handled, must mix homogenizing fluid；
（2）3- chlorine-2-hydroxyl propane sulfonic acid sodium is mixed with absolute ethyl alcohol, oil bath heating, standing are cooled to after room temperature and filtered, obtained
Filtrate, by volume 1:5, filtrate is mixed into obtain mixed liquor with petroleum ether, then by volume 1:5, by mixing homogenizing fluid with mixing
Liquid is mixed, then descends oil bath heating in a nitrogen atmosphere, stands and lower floor's aqueous phase is collected after 6~8h, rotary evaporation is prepared into hydroxyl sulfo group
Modified concentrate；
（3）Count by weight, hydroxyl sulfo concentrate, 3~8 parts of deionizations of 45~50 parts of above-mentioned preparations are weighed respectively
Water, 5~10 parts of polyvinyl alcohol and 2~3 parts of ethylene glycol mixing, stand 6~8h, you can be prepared into a kind of high-temperature stable bubble row
Agent.
The present invention is compared with other method, and advantageous effects are：
The present invention is formed stable colloform texture, empgen BB is loaded by the way that peach gum is scattered in deionized water
In colloform texture, it is subsequently dried and is modified by 3- chlorine-2-hydroxyl propane sulfonic acid sodium, prepares the bubble row of high-temperature stable
Agent, due to the hydroxyl sulfo group contained in 3- chlorine-2-hydroxyl propane sulfonic acid sodium, during foam discharging agent use, due to temperature
Rise, the structure destruction of foam discharging agent hydrophobic group ambient water, there occurs that micella is dissociated, and promote foam discharging agent molecule to be easier to absorption molten
Liquid surface and arrange it is even closer, meanwhile, temperature rise then liquid surface layer in molecule averag density it is smaller, molecule average distance
Bigger, the gravitation advantage of mean molecule reduces on the contrary, so surface tension reduces therewith when fluid temperature is raised, but through hydroxyl
Foam discharging agent after sulfo can reach ultralow interfacial tension within the scope of wider temperature, that is, elevate the temperature, bubble row
Agent still has good performance, and bubble prepared by the present invention arranges temperature up to 120~130 DEG C, with the rise of temperature, rises
Bubble effect will not be reduced, and the foam stabilizing time reaches 8~10min.
Embodiment
Raw material required for the present invention has：Fresh peach gum, deionized water, empgen BB, the ammonia of mass fraction 15%
Water, 3- chlorine-2-hydroxyl propane sulfonic acids sodium, absolute ethyl alcohol, petroleum ether, polyvinyl alcohol, ethylene glycol.
First in mass ratio 1:10, fresh peach gum is mixed with deionized water stirring, the heating water bath 22 at 45~50 DEG C
~24h, after the completion for the treatment of heating water bath, then under 4000~5000r/min centrifuges 10~15min, collects supernatant liquor, will
Supernatant rotates at 55~60 DEG C is evaporated to the 1/5 of original volume, is prepared into peach gum coagulant liquid；In mass ratio 1:5, by dodecane
Base glycine betaine is mixed with deionized water stirring, at 45~50 DEG C after 25~30min of heating water bath, with the ammoniacal liquor of mass fraction 15%
PH to 8.5,25~30min of insulation reaction are adjusted, modification liquid is collected to obtain, then by volume 1:1, by peach gum coagulant liquid and modification
Liquid is mixed, and 15~20min of homogenization in homogenizer is placed at room temperature, homogenizing fluid must be mixed by collecting；Again in mass ratio 1:10,
3- chlorine-2-hydroxyl propane sulfonic acid sodium is mixed with absolute ethyl alcohol and stirring and is placed in 25~30min of oil bath heating at 120~130 DEG C,
Then stand and be cooled to room temperature, filter and collect filtrate, then by volume 1:5, filtrate is mixed into 2~3h with petroleum ether and stirring,
Collect to obtain mixed liquor；Then by volume 1:5, standby mixing homogenizing fluid is mixed with mixed liquor stirring and is placed in three-necked flask
In, lead into three-necked flask after nitrogen exclusion air, then 1~2h of oil bath heating at 120~130 DEG C, then stop heating simultaneously
6~8h is stood, collection lower floor aqueous phase is placed in rotation at 65~70 DEG C and is evaporated to the 1/3 of original volume, is prepared into hydroxyl sulfo
Concentrate；Finally count by weight, 45~50 parts of hydroxyl sulfo concentrates, 3~8 parts of deionized waters, 5~10 are weighed respectively
Part polyvinyl alcohol and 2~3 parts of ethylene glycol are placed in beaker, are stirred at room temperature and are mixed and stand 6~8h, you can are prepared into one kind
High-temperature stable foam discharging agent.
It is with reference to example foam discharging agent effect comparison table of the present invention：
| Sequence number | Stratum water | Foam discharging agent concentration | Inlet temperature/DEG C | Outlet temperature/DEG C | Feed speed/（mL·min-1） | Admission pressure/MPa | Liquid carry over/mL | Intake velocity/（m3·h-1） |
| 1 | 001 well | 2.0% | 150 | 72 | 80 | 2.35 | 650 | 5.41 |
| 2 | 002 well | 3.0% | 150 | 73 | 80 | 2.65 | 735 | 5.55 |
| 3 | 003 well | 4.0% | 150 | 74 | 80 | 2.85 | 760 | 5.62 |
Example 1
First in mass ratio 1:10, fresh peach gum is mixed with deionized water stirring, heating water bath 24h, treats water-bath at 50 DEG C
After the completion of heating, then centrifuge under 5000r/min 15min, collect supernatant liquor, by supernatant at 60 DEG C rotary evaporation
To the 1/5 of original volume, peach gum coagulant liquid is prepared into；In mass ratio 1:5, empgen BB and deionized water are stirred mixed
Close, at 50 DEG C after heating water bath 30min, adjust pH to 8.5, insulation reaction 30min with the ammoniacal liquor of mass fraction 15%, collect
Modification liquid, then by volume 1:1, peach gum coagulant liquid is mixed with modification liquid, homogenization in homogenizer is placed at room temperature
20min, homogenizing fluid must be mixed by collecting；Again in mass ratio 1:10,3- chlorine-2-hydroxyl propane sulfonic acid sodium is mixed with absolute ethyl alcohol and stirring
Merging is placed in oil bath heating 30min at 130 DEG C, then stands and is cooled to room temperature, filters and collect filtrate, then by volume 1:5,
Filtrate is mixed into 3h with petroleum ether and stirring, mixed liquor is collected to obtain；Then by volume 1:5, by standby mixing homogenizing fluid with mixing
Close liquid stirring mixing to be placed in three-necked flask, nitrogen is led into three-necked flask and is excluded after air, then the oil bath heating at 130 DEG C
2h, then stops heating and standing 8h, collection lower floor aqueous phase is placed in rotation at 70 DEG C and is evaporated to the 1/3 of original volume, is prepared into
Hydroxyl sulfo concentrate；Finally count by weight, 50 parts of hydroxyl sulfo concentrates, 8 parts of deionized waters, 10 are weighed respectively
Part polyvinyl alcohol and 3 parts of ethylene glycol are placed in beaker, are stirred at room temperature and are mixed and stand 8h, you can are prepared into a kind of high temperature steady
Sizing foam discharging agent.
Example 2
First in mass ratio 1:10, fresh peach gum is mixed with deionized water stirring, heating water bath 22h, treats water-bath at 45 DEG C
After the completion of heating, then centrifuge under 4000r/min 10min, collect supernatant liquor, by supernatant at 55 DEG C rotary evaporation
To the 1/5 of original volume, peach gum coagulant liquid is prepared into；In mass ratio 1:5, empgen BB and deionized water are stirred mixed
Close, at 45 DEG C after heating water bath 25min, adjust pH to 8.5, insulation reaction 25min with the ammoniacal liquor of mass fraction 15%, collect
Modification liquid, then by volume 1:1, peach gum coagulant liquid is mixed with modification liquid, homogenization in homogenizer is placed at room temperature
15min, homogenizing fluid must be mixed by collecting；Again in mass ratio 1:10,3- chlorine-2-hydroxyl propane sulfonic acid sodium is mixed with absolute ethyl alcohol and stirring
Merging is placed in oil bath heating 25min at 120 DEG C, then stands and is cooled to room temperature, filters and collect filtrate, then by volume 1:5,
Filtrate is mixed into 2h with petroleum ether and stirring, mixed liquor is collected to obtain；Then by volume 1:5, by standby mixing homogenizing fluid with mixing
Close liquid stirring mixing to be placed in three-necked flask, nitrogen is led into three-necked flask and is excluded after air, then the oil bath heating at 120 DEG C
1h, then stops heating and standing 6h, collection lower floor aqueous phase is placed in rotation at 65 DEG C and is evaporated to the 1/3 of original volume, is prepared into
Hydroxyl sulfo concentrate；Finally count by weight, 45 parts of hydroxyl sulfo concentrates, 3 parts of deionized waters, 5 are weighed respectively
Part polyvinyl alcohol and 2 parts of ethylene glycol are placed in beaker, are stirred at room temperature and are mixed and stand 6h, you can are prepared into a kind of high temperature steady
Sizing foam discharging agent.
Example 3
First in mass ratio 1:10, fresh peach gum is mixed with deionized water stirring, heating water bath 23h, treats water-bath at 47 DEG C
After the completion of heating, then centrifuge under 4500r/min 12min, collect supernatant liquor, by supernatant at 57 DEG C rotary evaporation
To the 1/5 of original volume, peach gum coagulant liquid is prepared into；In mass ratio 1:5, empgen BB and deionized water are stirred mixed
Close, at 47 DEG C after heating water bath 27min, adjust pH to 8.5, insulation reaction 27min with the ammoniacal liquor of mass fraction 15%, collect
Modification liquid, then by volume 1:1, peach gum coagulant liquid is mixed with modification liquid, homogenization in homogenizer is placed at room temperature
16min, homogenizing fluid must be mixed by collecting；Again in mass ratio 1:10,3- chlorine-2-hydroxyl propane sulfonic acid sodium is mixed with absolute ethyl alcohol and stirring
Merging is placed in oil bath heating 27min at 125 DEG C, then stands and is cooled to room temperature, filters and collect filtrate, then by volume 1:5,
Filtrate is mixed into 2h with petroleum ether and stirring, mixed liquor is collected to obtain；Then by volume 1:5, by standby mixing homogenizing fluid with mixing
Close liquid stirring mixing to be placed in three-necked flask, nitrogen is led into three-necked flask and is excluded after air, then the oil bath heating at 125 DEG C
1h, then stops heating and standing 7h, collection lower floor aqueous phase is placed in rotation at 67 DEG C and is evaporated to the 1/3 of original volume, is prepared into
Hydroxyl sulfo concentrate；Finally count by weight, 47 parts of hydroxyl sulfo concentrates, 6 parts of deionized waters, 7 are weighed respectively
Part polyvinyl alcohol and 3 parts of ethylene glycol are placed in beaker, are stirred at room temperature and are mixed and stand 7h, you can are prepared into a kind of high temperature steady
Sizing foam discharging agent.
Claims (7)
1. a kind of preparation method of high-temperature stable foam discharging agent, it is characterised in that specifically preparation process is：
（1）Fresh peach gum and deionized water are mixed and heated, then are centrifuged, supernatant liquor is collected, supernatant liquor is revolved
Turn to be evaporated to the 1/5 of original volume, obtain peach gum coagulant liquid, then empgen BB is mixed with deionized water, heating water bath is simultaneously
Adjust and modification liquid obtained after pH to 8.5,25~30min of insulation reaction, by isometric ratio, peach gum coagulant liquid is mixed with modification liquid,
Homogenization must mix homogenizing fluid；
（2）3- chlorine-2-hydroxyl propane sulfonic acid sodium is mixed with absolute ethyl alcohol, oil bath heating, standing are cooled to after room temperature and filtered, obtained
Filtrate, by volume 1:5, filtrate is mixed into obtain mixed liquor with petroleum ether, then by volume 1:5, by mixing homogenizing fluid with mixing
Liquid is mixed, and descends oil bath heating in a nitrogen atmosphere, stands and lower floor's aqueous phase is collected after 6~8h, rotary evaporation is prepared into hydroxyl sulfo group
Modified concentrate；
（3）Count by weight, hydroxyl sulfo concentrate, 3~8 parts of deionizations of 45~50 parts of above-mentioned preparations are weighed respectively
Water, 5~10 parts of polyvinyl alcohol and 2~3 parts of ethylene glycol mixing, stand 6~8h, you can be prepared into a kind of high-temperature stable bubble row
Agent.
2. a kind of preparation method of high-temperature stable foam discharging agent according to claim 1, it is characterised in that：Step（1）Institute
The fresh peach gum and deionized water quality ratio stated are 1:10.
3. a kind of preparation method of high-temperature stable foam discharging agent according to claim 1, it is characterised in that：Step（1）Institute
The centrifugation rotating speed stated is 4000~5000r/min.
4. a kind of preparation method of high-temperature stable foam discharging agent according to claim 1, it is characterised in that：Step（1）Institute
The empgen BB stated is 1 with deionized water quality ratio:5.
5. a kind of preparation method of high-temperature stable foam discharging agent according to claim 1, it is characterised in that：Step（1）Institute
The regulation pH stated uses the ammoniacal liquor of mass fraction 15%.
6. a kind of preparation method of high-temperature stable foam discharging agent according to claim 1, it is characterised in that：Step（2）Institute
The 3- chlorine-2-hydroxyl propane sulfonic acid sodium stated is 1 with absolute ethyl alcohol mass ratio:5.
7. a kind of preparation method of high-temperature stable foam discharging agent according to claim 1, it is characterised in that：Step（2）Institute
The oil bath heating temperature stated is 120~130 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264990.3A CN107090286A (en) | 2017-04-21 | 2017-04-21 | A kind of preparation method of high-temperature stable foam discharging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264990.3A CN107090286A (en) | 2017-04-21 | 2017-04-21 | A kind of preparation method of high-temperature stable foam discharging agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107090286A true CN107090286A (en) | 2017-08-25 |
Family
ID=59637964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710264990.3A Pending CN107090286A (en) | 2017-04-21 | 2017-04-21 | A kind of preparation method of high-temperature stable foam discharging agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107090286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111218267A (en) * | 2020-01-19 | 2020-06-02 | 成都华阳兴华化工有限公司 | Foam scrubbing agent with low foam water content and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893701A (en) * | 2014-03-09 | 2015-09-09 | 宁夏中科康宇化工有限公司 | Foam drainage agent resistant to gas condensate and mineralization degree and preparation method thereof |
| CN105062453A (en) * | 2015-08-05 | 2015-11-18 | 扬州大学 | Solid foam water draining agent for gas field and preparation method thereof |
| CN105199700A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Oligomeric betanine type foam drainage agent and preparation method |
-
2017
- 2017-04-21 CN CN201710264990.3A patent/CN107090286A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893701A (en) * | 2014-03-09 | 2015-09-09 | 宁夏中科康宇化工有限公司 | Foam drainage agent resistant to gas condensate and mineralization degree and preparation method thereof |
| CN105062453A (en) * | 2015-08-05 | 2015-11-18 | 扬州大学 | Solid foam water draining agent for gas field and preparation method thereof |
| CN105199700A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Oligomeric betanine type foam drainage agent and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111218267A (en) * | 2020-01-19 | 2020-06-02 | 成都华阳兴华化工有限公司 | Foam scrubbing agent with low foam water content and preparation method thereof |
| CN111218267B (en) * | 2020-01-19 | 2022-05-13 | 成都华阳兴华化工有限公司 | Foam scrubbing agent with low foam water content and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207591325U (en) | A kind of industrial hemp extraction cannabidiol isolates and purifies device | |
| CN104277917A (en) | Extraction method and extraction device for cannabidiol-enriched industrial hemp essential oil | |
| CN109078359B (en) | Process and device for continuous extraction of acesulfame potassium sulfonated hydrolysate | |
| CN105854634A (en) | Ionic liquid/cellulose acetate blended membrane for gas separation | |
| CN104292473B (en) | A kind of preparation method of polyisoprene latex | |
| CN107090286A (en) | A kind of preparation method of high-temperature stable foam discharging agent | |
| CN110754531A (en) | Production method and production system for improving milk powder mixing property | |
| CN209123399U (en) | A kind of chemical industry mixed solution extraction equipment | |
| CN202131345U (en) | Extracting trough for extracting copper from circuit board leaching solution | |
| CN107232387A (en) | A kind of extracting method of cottonseed protein | |
| CN106861450A (en) | A kind of preparation of biomass emulsion seperation film and the application in the separation of selective emulsion | |
| CN109224797A (en) | A kind for the treatment of method and apparatus of sulfonated tail gas | |
| CN104607072B (en) | Chitosan-modified mesoporous silicon oxide fills hybridized film and preparation method and application | |
| CN107265886A (en) | A kind of epoxy resin modification starch film forming agent | |
| CN104645664A (en) | Continuous countercurrent differential extraction method and continuous countercurrent differential extraction device | |
| CN102580350B (en) | Airlift air stirring multi-sublayer circulating extraction device and method | |
| CN106831319A (en) | A kind of tetrachloro-ethylene purge drying method | |
| CN108654124A (en) | The device and method of volatile organic compounds in a kind of removing lotion | |
| CN109092268A (en) | A kind of renewable dicyandiamide modified tannin adsorbent and preparation method thereof and production system | |
| CN102423552A (en) | Technology for foam separation of different surfactants | |
| CN110898760A (en) | Instant powder hollow granulation device and granulation process | |
| CN203816279U (en) | Protein foam removal device | |
| CN210901229U (en) | Production line of low-caffeine instant tea | |
| CN103933096A (en) | Method for separating and enriching flavone in chrysanthemum extracting solution | |
| CN103801117A (en) | Protein fluid foam removing system and process |
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: 20170825 |