CN107265675B - Solid slow-release scale inhibitor and preparation method thereof - Google Patents
Solid slow-release scale inhibitor and preparation method thereof Download PDFInfo
- Publication number
- CN107265675B CN107265675B CN201710509466.8A CN201710509466A CN107265675B CN 107265675 B CN107265675 B CN 107265675B CN 201710509466 A CN201710509466 A CN 201710509466A CN 107265675 B CN107265675 B CN 107265675B
- Authority
- CN
- China
- Prior art keywords
- collecting
- parts
- mixture
- mass ratio
- scale inhibitor
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Abstract
The invention belongs to the technical field of oilfield additives, and particularly relates to a solid slow-release scale inhibitor and a preparation method thereof. The scale inhibitor consists of organic acid, biological matrix, water, adhesive, dispersant and assistant, and is prepared through stirring the materials in stirrer, pressing in a press, collecting the extruded matter, air drying, crushing the air dried matter, sieving and collecting the sieved grains.
Description
Technical Field
The invention belongs to the technical field of oilfield additives, and particularly relates to a solid slow-release scale inhibitor and a preparation method thereof.
Background
In the field of oil fields, the nature of scaling is such that the oil field water becomes supersaturated. The scaling phenomenon of oil field water often causes the problems that an oil well pump is blocked, an annular space between a well pipe and an oil pumping rod is blocked, the inner diameter of a gathering and transportation pipeline is sharply reduced, even the gathering and transportation pipeline is seriously blocked and the like, and the normal operation of oil field production is seriously influenced.
At present, methods for controlling oil field water scale can be largely divided into chemical methods and physical methods. The chemical scale inhibiting method includes ion exchange softening process, lime softening process, acid adding process, and introducing CO2The physical scale inhibition method comprises a membrane method, electrostatic water treatment, electronic water treatment, heat exchanger anticorrosion scale inhibition coating coated with anticorrosion scale inhibition coating to inhibit scaling, and a plastic heat exchanger. Compared with physical methods, chemical methods, especially the method of adding scale inhibitor, have the advantages of less investment, simple feeding, good effect and the like, so the method is often adopted for preventing and treating the oil field scale.
The corrosion and scale inhibitor used at present is generally a liquid scale inhibitor of a composite system of organic phosphoric acid, polymeric carboxylic acid and polymeric phosphate. The system has good ultimate effect and synergy, has the advantages of low cost, small dosage, convenient use and the like, but has some defects, generally, in order to solve the scaling problem, people directly inject liquid scale inhibitors into the well from the well head, but the scale inhibitors quickly flow away with produced liquid or are adhered to the pipe wall and cannot completely reach the well bottom, so the addition amount is large, the action period and the effect are not ideal, a large amount of medicaments are wasted, and a lot of troubles are brought to production and management. Based on the above, how to overcome the defects of the existing liquid scale inhibitor, the development of a solid scale inhibitor with small addition amount, good scale inhibition effect and long action period is an urgent problem to be solved in the field of oilfield additives.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the defects of large addition amount, non-ideal action period and scale inhibition effect of the existing liquid scale inhibitor, provides a solid slow-release scale inhibitor and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the solid slow-release scale inhibitor is characterized by comprising the following raw materials in parts by weight: 60-65 parts of organic acid, 40-45 parts of biological matrix, 20-25 parts of water, 15-20 parts of adhesive, 6-9 parts of dispersing agent and 1-3 parts of auxiliary agent.
2. The solid slow-release scale inhibitor according to claim 1, wherein the preparation method of the organic acid comprises the following steps:
(1) putting maleic anhydride and lysine into a reactor according to the mass ratio of 1:3, adding tetrahydrofuran which is 2-3 times of the mass of the lysine and titanium dioxide which is 1-2% of the mass of the lysine, and heating and refluxing;
(2) and after the reflux is finished, filtering, collecting filter residues, washing the filter residues with water, air-drying the washed filter residues, collecting air-dried substances, and uniformly mixing the air-dried substances and sodium citrate according to the mass ratio of 3-6: 1 to obtain the organic acid.
The preparation of the biological matrix comprises the following steps:
A. uniformly mixing dirt in an oil field pipeline with the field soil according to the mass ratio of 1:3, collecting the mixture, adjusting the water content of the mixture to 60-65% by using water, then paving the mixture in a culture pond, paving the mixture with the thickness of 6-10 cm, and putting the earthworms in the earthworm stage into the culture pond for culture according to 80-90 earthworms in the earthworm stage per square meter; B. and after the culture is finished, collecting the earthworms living in the culture pond, mashing the collected earthworms and 1.2mol/L hydrochloric acid in a mashing machine according to the mass ratio of 1:3, collecting a mashing mixture, performing centrifugal separation, collecting a centrifugal liquid, performing freeze drying on the centrifugal liquid, and collecting a dried substance to obtain the biological matrix.
The adhesive is formed by mixing polyvinylpyrrolidone and polyvinyl alcohol according to the mass ratio of 1: 4.
The dispersing agent is any one of sodium tripolyphosphate, sodium dodecyl sulfate or stearic acid.
The auxiliary agent is formed by mixing triethanolamine and titanium dioxide according to the mass ratio of 6: 1.
A preparation method of a solid slow-release scale inhibitor comprises the following steps: taking raw materials according to the weight part ratio, putting the raw materials into a stirrer to be uniformly stirred, collecting a stirring mixture, putting the stirring mixture into a press to be pressed into blocks, collecting an extruded matter, naturally drying the extruded matter, crushing the dried matter, sieving the crushed matter, collecting sieved particles, and obtaining the solid slow-release scale inhibitor. Compared with other methods, the method has the beneficial technical effects that:
(1) according to the invention, the amide substances are formed by maleic anhydride and lysine in a tetrahydrofuran environment under the catalytic action of titanium dioxide, and are compounded with sodium citrate to form organic acid, the organic acid, calcium ions, magnesium ions and other metal ions form a water-soluble complex to prevent scale formation, and meanwhile, the earthworm is specially cultured to form oil scale decomposition enzyme in vivo and is matched with the organic acid, so that the formation of scale is prevented, the oil scale is decomposed on the other hand, and the scale inhibition and cleaning effects are better achieved;
(2) the invention takes polyvinylpyrrolidone and polyvinyl alcohol as adhesives, wherein the polyvinylpyrrolidone has good water solubility, the polyvinyl alcohol is used for reducing the solubility to achieve the effect of slow release, and the polyvinylpyrrolidone forms water-soluble electrolyte after being dissolved to generate steric hindrance to prevent mutual contact among scaling crystal nuclei so that scales can not be aggregated and grown, triethanolamine is used for increasing the detention time of the solid slow-release scale inhibitor in oil field pipelines to prolong the scale inhibition period, titanium dioxide is used for catalysis to enhance the scale cleaning and scale inhibition effects, and the titanium dioxide is used for improving the enzyme activity and increasing the enzyme action to further enhance the scale inhibition effect.
Detailed Description
The preparation method of the organic acid comprises the following steps:
(1) putting maleic anhydride and lysine into a reactor according to the mass ratio of 1:3, adding tetrahydrofuran which is 2-3 times of the mass of the lysine and titanium dioxide which is 1-2% of the mass of the lysine, and heating and refluxing;
(2) and after the reflux is finished, filtering, collecting filter residues, washing the filter residues with water, air-drying the washed filter residues, collecting air-dried substances, and uniformly mixing the air-dried substances and sodium citrate according to the mass ratio of 3-6: 1 to obtain the organic acid.
The preparation of the biological matrix comprises the following steps:
A. uniformly mixing dirt in oil field pipelines and field soil according to the mass ratio of 1:3, collecting the mixture, adjusting the water content of the mixture to 60-65% by using water, then paving the mixture in a culture pond, paving earthworms with the thickness of 6-10 cm, putting the earthworms of young earthworms according to 80-90 young earthworms per square meter into the culture pond, culturing for 10-15 days at the culture temperature of 18-26 ℃, and adding the dirt in the oil field pipelines with the mass of 10-12% of the field soil into the culture pond every 15-20 hours in the culture process;
B. and after the culture is finished, collecting the earthworms living in the culture pond, mashing the collected earthworms and 1.2mol/L hydrochloric acid in a mass ratio of 1:3 in a mashing machine at 11000r/min for 10-15 min, collecting the mashed mixture, carrying out centrifugal separation, collecting the centrifugal liquid, carrying out freeze drying on the centrifugal liquid, and collecting the dried substance to obtain the biological matrix. Preparation of the adhesive: the polyvinyl pyrrolidone and the polyvinyl alcohol are mixed according to the mass ratio of 1: 4.
Selecting a dispersing agent: any one of sodium tripolyphosphate, sodium dodecyl sulfate or stearic acid.
Preparation of an auxiliary agent: mixing triethanolamine and titanium dioxide according to the mass ratio of 6: 1.
The invention relates to a solid slow-release scale inhibitor, which comprises the following raw materials in parts by weight: 60-65 parts of organic acid, 40-45 parts of biological matrix, 20-25 parts of water, 15-20 parts of adhesive, 6-9 parts of dispersing agent and 1-3 parts of auxiliary agent. The preparation method of the solid slow-release scale inhibitor comprises the following steps: taking raw materials according to the weight part ratio, putting the raw materials into a stirrer to be uniformly stirred, collecting a stirring mixture, putting the mixture into a press to be pressed into blocks at 20MPa, collecting an extruded matter, naturally drying the extruded matter in the air, crushing the dried matter, sieving the crushed matter with a 200-mesh sieve, collecting and sieving particles, and obtaining the solid slow-release scale inhibitor.
Example 1
The preparation method of the organic acid comprises the following steps:
(1) putting maleic anhydride and lysine into a reactor according to the mass ratio of 1:3, adding tetrahydrofuran which is 2 times of the mass of the lysine and titanium dioxide which is 1% of the mass of the lysine, and heating and refluxing;
(2) and after the reflux is finished, filtering, collecting filter residues, washing the filter residues with water, air-drying the washed filter residues, collecting air-dried substances, and uniformly mixing the air-dried substances and sodium citrate according to the mass ratio of 3:1 to obtain the organic acid.
The preparation of the biological matrix comprises the following steps:
B. uniformly mixing dirt in oil field pipelines and the field soil according to the mass ratio of 1:3, collecting the mixture, adjusting the water content of the mixture to 60% by using water, then paving the mixture in a culture pond, paving earthworms with the thickness of 6cm, putting the earthworms of young earthworms according to 80 young earthworms per square meter into the culture pond, culturing for 10 days at the culture temperature of 18 ℃, and adding the dirt in the oil field pipelines with the mass of 10% of the field soil into the culture pond every 15 hours in the culturing process;
B. and after the culture is finished, collecting the earthworms living in the culture pond, mashing the collected earthworms and 1.2mol/L hydrochloric acid in a mass ratio of 1:3 in a mashing machine for 10min at 11000r/min, collecting the mashed mixture, carrying out centrifugal separation, collecting the centrifugal liquid, carrying out freeze drying on the centrifugal liquid, and collecting the dried substance to obtain the biological matrix.
Preparation of the adhesive: the polyvinyl pyrrolidone and the polyvinyl alcohol are mixed according to the mass ratio of 1: 4.
Preparation of an auxiliary agent: mixing triethanolamine and titanium dioxide according to the mass ratio of 6: 1.
The invention relates to a solid slow-release scale inhibitor, which comprises the following raw materials in parts by weight: 60 parts of organic acid, 40 parts of biological matrix, 20 parts of water, 15 parts of adhesive, 6 parts of sodium tripolyphosphate and 1 part of auxiliary agent.
The preparation method of the solid slow-release scale inhibitor comprises the following steps: taking raw materials according to the weight part ratio, putting the raw materials into a stirrer to be uniformly stirred, collecting a stirring mixture, putting the mixture into a press to be pressed into blocks at 20MPa, collecting an extruded matter, naturally drying the extruded matter in the air, crushing the dried matter, sieving the crushed matter with a 200-mesh sieve, collecting and sieving particles, and obtaining the solid slow-release scale inhibitor.
Example 2
The preparation method of the organic acid comprises the following steps:
(1) putting maleic anhydride and lysine into a reactor according to the mass ratio of 1:3, adding tetrahydrofuran which is 2 times of the mass of the lysine and titanium dioxide which is 1% of the mass of the lysine, and heating and refluxing;
(2) and after the reflux is finished, filtering, collecting filter residues, washing the filter residues with water, air-drying the washed filter residues, collecting air-dried substances, and uniformly mixing the air-dried substances and sodium citrate according to the mass ratio of 5:1 to obtain the organic acid.
The preparation of the biological matrix comprises the following steps:
C. uniformly mixing dirt in oil field pipelines and the field soil according to the mass ratio of 1:3, collecting the mixture, adjusting the water content of the mixture to 63% by using water, then paving the mixture in a culture pond, paving earthworms with the thickness of 8cm, putting the earthworms of young earthworms according to 85 young earthworms per square meter into the culture pond, culturing for 13 days at the culture temperature of 22 ℃, and adding the dirt in the oil field pipelines with the mass of 11% of the field soil into the culture pond every 18 hours in the culturing process;
B. and after the culture is finished, collecting the earthworms living in the culture pond, mashing the collected earthworms and 1.2mol/L hydrochloric acid in a mass ratio of 1:3 in a mashing machine for 13min at 11000r/min, collecting the mashed mixture, carrying out centrifugal separation, collecting the centrifugal liquid, carrying out freeze drying on the centrifugal liquid, and collecting the dried substance to obtain the biological matrix.
Preparation of the adhesive: the polyvinyl pyrrolidone and the polyvinyl alcohol are mixed according to the mass ratio of 1: 4.
Preparation of an auxiliary agent: mixing triethanolamine and titanium dioxide according to the mass ratio of 6: 1.
The invention relates to a solid slow-release scale inhibitor, which comprises the following raw materials in parts by weight: 63 parts of organic acid, 43 parts of biological matrix, 23 parts of water, 18 parts of adhesive, 8 parts of sodium dodecyl sulfate and 2 parts of auxiliary agent.
The preparation method of the solid slow-release scale inhibitor comprises the following steps: taking raw materials according to the weight part ratio, putting the raw materials into a stirrer to be uniformly stirred, collecting a stirring mixture, putting the mixture into a press to be pressed into blocks at 20MPa, collecting an extruded matter, naturally drying the extruded matter in the air, crushing the dried matter, sieving the crushed matter with a 200-mesh sieve, collecting and sieving particles, and obtaining the solid slow-release scale inhibitor.
Example 3
The preparation method of the organic acid comprises the following steps:
(1) putting maleic anhydride and lysine into a reactor according to the mass ratio of 1:3, adding tetrahydrofuran accounting for 3 times of the mass of the lysine and titanium dioxide accounting for 2% of the mass of the lysine, and heating and refluxing;
(2) and after the reflux is finished, filtering, collecting filter residues, washing the filter residues with water, air-drying the washed filter residues, collecting air-dried substances, and uniformly mixing the air-dried substances and sodium citrate according to the mass ratio of 6:1 to obtain the organic acid.
The preparation of the biological matrix comprises the following steps:
uniformly mixing dirt in oil field pipelines and the field soil according to the mass ratio of 1:3, collecting the mixture, adjusting the water content of the mixture to 65% by using water, then paving the mixture in a culture pond, paving earthworms with the thickness of 10cm, putting the earthworms of young earthworms according to 90 young earthworms per square meter into the culture pond, culturing for 15 days at the culture temperature of 26 ℃, and adding the dirt in the oil field pipelines with the mass of 12% of the field soil into the culture pond every 20 hours in the culturing process; B. and after the culture is finished, collecting the earthworms living in the culture pond, mashing the collected earthworms and 1.2mol/L hydrochloric acid in a mass ratio of 1:3 in a mashing machine for 15min at 11000r/min, collecting the mashed mixture, carrying out centrifugal separation, collecting the centrifugal liquid, carrying out freeze drying on the centrifugal liquid, and collecting the dried substance to obtain the biological matrix.
Preparation of the adhesive: the polyvinyl pyrrolidone and the polyvinyl alcohol are mixed according to the mass ratio of 1: 4.
Preparation of an auxiliary agent: mixing triethanolamine and titanium dioxide according to the mass ratio of 6: 1.
The invention relates to a solid slow-release scale inhibitor, which comprises the following raw materials in parts by weight: 65 parts of organic acid, 45 parts of biological matrix, 25 parts of water, 20 parts of adhesive, 9 parts of stearic acid and 3 parts of auxiliary agent.
The preparation method of the solid slow-release scale inhibitor comprises the following steps: taking raw materials according to the weight part ratio, putting the raw materials into a stirrer to be uniformly stirred, collecting a stirring mixture, putting the mixture into a press to be pressed into blocks at 20MPa, collecting an extruded matter, naturally drying the extruded matter in the air, crushing the dried matter, sieving the crushed matter with a 200-mesh sieve, collecting and sieving particles, and obtaining the solid slow-release scale inhibitor.
Comparative example: the solid scale inhibitor is produced by Suzhou environmental protection technology company Limited and specially used for oil fields.
The using method comprises the following steps: the scale inhibitor is placed in a sieve tube with the length of 4m and the outer diameter the same as that of the oil well pump and is connected to the lower end of the oil well pump, when liquid flows through the sieve tube, the solid slow-release scale inhibitor is slowly dissolved, and active ingredients in the solid slow-release scale inhibitor are released.
According to the using method, the solid slow-release scale inhibitor prepared in the examples 1-3 of the invention and the oil field special solid scale inhibitor of the comparative example are used, the using effect is detected, and the detection result is shown in table 1: TABLE 1
| Detecting items | Example 1 | Example 2 | Example 3 | Comparative example |
| The scale inhibitor is used in mg/L | 10 | 10 | 10 | 50～60 |
| Scale inhibition rate/%) | 93.2 | 94.6 | 95.7 | 82.9 |
| Corrosion rate mm/a | 0.076 | 0.071 | 0.068 | 0.137 |
| Period of action/day | 152 | 163 | 175 | 128 |
Note: the scale inhibitor usage is based on the quality of the oilfield water.
In conclusion, the solid slow-release scale inhibitor prepared by the invention has the advantages of slow release, convenient dosing and good scale inhibition effect, can play a good role in protecting equipment such as oil well casings, oil pipes, pull rods and the like after being used, reduces the maintenance cost expenditure of oil fields, and is an oil field auxiliary agent which is convenient to use, economical and durable.
Claims (2)
1. The solid slow-release scale inhibitor is characterized by comprising the following raw materials in parts by weight: 60-65 parts of organic acid, 40-45 parts of biological matrix, 20-25 parts of water, 15-20 parts of adhesive, 6-9 parts of dispersing agent and 1-3 parts of auxiliary agent;
the preparation method of the organic acid comprises the following steps:
(1) putting maleic anhydride and lysine into a reactor according to the mass ratio of 1:3, adding tetrahydrofuran which is 2-3 times of the mass of the lysine and titanium dioxide which is 1-2% of the mass of the lysine, and heating and refluxing;
(2) after the reflux is finished, filtering, collecting filter residues, washing the filter residues with water, air-drying the washed filter residues, collecting air-dried substances, and uniformly mixing the air-dried substances and sodium citrate according to the mass ratio of 3-6: 1 to obtain organic acid;
the preparation of the biological matrix comprises the following steps:
A. uniformly mixing dirt in an oil field pipeline with the field soil according to the mass ratio of 1:3, collecting the mixture, adjusting the water content of the mixture to 60-65% by using water, then paving the mixture in a culture pond, paving the mixture with the thickness of 6-10 cm, and putting the earthworms in the earthworm stage into the culture pond for culture according to 80-90 earthworms in the earthworm stage per square meter; B. collecting the earthworms surviving in the culture pond after the culture is finished, putting the collected earthworms and 1.2mol/L hydrochloric acid into a triturator according to the mass ratio of 1:3 for triturating, collecting a triturated mixture, carrying out centrifugal separation, collecting a centrifugal liquid, carrying out freeze drying on the centrifugal liquid, and collecting a dried substance to obtain a biological matrix;
the adhesive is formed by mixing polyvinylpyrrolidone and polyvinyl alcohol according to the mass ratio of 1: 4;
the dispersing agent is any one of sodium tripolyphosphate, sodium dodecyl sulfate or stearic acid;
the auxiliary agent is formed by mixing triethanolamine and titanium dioxide according to the mass ratio of 6: 1.
2. The solid slow-release scale inhibitor according to claim 1, wherein the preparation method comprises the following steps: taking raw materials according to the weight part ratio, putting the raw materials into a stirrer to be uniformly stirred, collecting a stirring mixture, putting the stirring mixture into a press to be pressed into blocks, collecting an extruded matter, naturally drying the extruded matter, crushing the dried matter, sieving the crushed matter, collecting sieved particles, and obtaining the solid slow-release scale inhibitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509466.8A CN107265675B (en) | 2017-06-28 | 2017-06-28 | Solid slow-release scale inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509466.8A CN107265675B (en) | 2017-06-28 | 2017-06-28 | Solid slow-release scale inhibitor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107265675A CN107265675A (en) | 2017-10-20 |
| CN107265675B true CN107265675B (en) | 2020-05-15 |
Family
ID=60071593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509466.8A Active CN107265675B (en) | 2017-06-28 | 2017-06-28 | Solid slow-release scale inhibitor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107265675B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919653A (en) * | 2021-01-22 | 2021-06-08 | 广东巴沃夫环保科技有限公司 | Solid water treatment agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613599A (en) * | 2009-06-25 | 2009-12-30 | 天津开广工业水处理有限公司 | A kind of solid corrosion and scale inhibitor and preparation method thereof |
| CN101805597A (en) * | 2010-03-11 | 2010-08-18 | 中国石油集团川庆钻探工程有限公司 | Solid corrosion and scale inhibitor for oil field |
-
2017
- 2017-06-28 CN CN201710509466.8A patent/CN107265675B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613599A (en) * | 2009-06-25 | 2009-12-30 | 天津开广工业水处理有限公司 | A kind of solid corrosion and scale inhibitor and preparation method thereof |
| CN101805597A (en) * | 2010-03-11 | 2010-08-18 | 中国石油集团川庆钻探工程有限公司 | Solid corrosion and scale inhibitor for oil field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107265675A (en) | 2017-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107082536B (en) | Breeding wastewater treatment process | |
| CN102260104A (en) | Method for producing biological organic fertilizer by fermenting sludge | |
| CN101637155A (en) | Bactericidal and algaecidal composition for intermediate water system, preparation method and application thereof | |
| CN111219168B (en) | Solid corrosion-inhibiting antiscaling agent and its processing method | |
| Xie et al. | Biochar-mediated Anammox granular sludge: Formation/characteristics of pitaya type granular sludge and enhanced performance of Anammox process | |
| CN104961289A (en) | Micro-nano aeration high-efficiency biotreatment technical system for livestock and poultry breeding wastewater | |
| CN107265675B (en) | Solid slow-release scale inhibitor and preparation method thereof | |
| Jin et al. | Enhancement of autothermal thermophilic aerobic digestion by chemical approach: Dosage of ferric nitrate on disinhibition of excessive volatile fatty acids | |
| CN104399441A (en) | Honeycomb-stone water-environment nitrogen-removal restoration material | |
| CN104069831B (en) | A kind of efficient except nitrate granules adsorbent and preparation method thereof | |
| CN107324474A (en) | Efficient dephosphorization agent and its preparation method and application | |
| Xie et al. | Composting–a solution of eliminating a nitrite-rich wastewater by reusing it as a moisture conditioning agent | |
| CN203582658U (en) | Multi-stage aeration reclaimed water treatment system for medium and small towns | |
| CN104788187A (en) | Oil shale semi-coke bacterial fertilizer for increasing content of readily available nutrients in soil and preparation method thereof | |
| CN102219286A (en) | Treatment method of wastewater generated during citric acid preparation and preparation method of citric acid | |
| CN104628224A (en) | Treatment process of glycine condensation wastewater | |
| CN204958644U (en) | Micro -nano aeration high -efficiency biological processing apparatus of waste water is bred to beasts and birds | |
| CN110893318A (en) | Preparation method and use method of public toilet microbial deodorant | |
| CN109133558A (en) | A kind of cultivating farm sewage treatment method | |
| Zhang et al. | Re-activation characteristics of preserved aerobic granular sludge | |
| CN108862969A (en) | A kind of sewage treatment process of activated sludge process excess sludge reduction | |
| CN205188064U (en) | Domestic sewage synthesizes processing apparatus | |
| CN109439452B (en) | Deodorizing and descaling agent for toilet and preparation method thereof | |
| CN106380003A (en) | Aerobic granular sludge based on ferric oxide and phosphorus-accumulating bacteria, and preparation method thereof | |
| CN102485662A (en) | Wastewater processing substrate, water body processing apparatus and wastewater processing method, and application thereof |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200403 Address after: 213000 c416, Tianhong building, Changzhou science and Education City, Wujin District, Changzhou City, Jiangsu Province Applicant after: Chen Yizhong Address before: 213102 Jiangsu province Changzhou City Zhonglou District Qingguo Lane No. 216-503 Applicant before: CHANGZHOU XINBIN TEXTILE Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200420 Address after: 256600 Binzhou City, Shandong province Binhu District of Beizhen Applicant after: Binzhou Qiankun Chemical Machinery Co., Ltd Address before: 213000 c416, Tianhong building, Changzhou science and Education City, Wujin District, Changzhou City, Jiangsu Province Applicant before: Chen Yizhong |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |