CN111054449A - Environment-friendly multi-metal passivator and preparation method thereof - Google Patents
Environment-friendly multi-metal passivator and preparation method thereof Download PDFInfo
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- CN111054449A CN111054449A CN201911416359.6A CN201911416359A CN111054449A CN 111054449 A CN111054449 A CN 111054449A CN 201911416359 A CN201911416359 A CN 201911416359A CN 111054449 A CN111054449 A CN 111054449A
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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Abstract
The invention discloses an environment-friendly multi-metal passivator which comprises the following components in parts by weight: 50-60 parts of boric acid, 20-30 parts of glycerol, 10-15 parts of calcium stearate, 10-15 parts of sodium carbonate, 5-10 parts of sodium hydroxide and 30-40 parts of deionized water. Meanwhile, the invention also discloses a preparation method of the environment-friendly multi-metal passivator. All the raw material components are inorganic compounds, and the melting point of the organic carbon hydride is higher than that of organic hydrocarbon, so that the organic carbon hydride is more convenient and safer to store; the invention mainly takes boron compound and calcium compound as raw materials to synthesize the inhibitor aiming at various metals such as nickel, alum and aluminum; the raw materials do not contain any harmful substances, so that the environment is protected, the harm to operators is reduced, and the downstream processing and the product quality are not affected; compared with the traditional rare earth inhibitor, the rare earth inhibitor saves the national rare earth resources and reduces the production cost of enterprises.
Description
Technical Field
The invention belongs to the field of petrochemical industry, and particularly relates to an environment-friendly multi-metal passivator and a preparation method thereof.
Background
In the catalytic cracking process, especially in the catalytic cracking process using heavy oil as raw material, heavy metals contained in the raw oil, such as nickel, vanadium, copper, iron, etc., can be deposited on the surface of the catalyst to cause catalyst poisoning inactivation and selectivity reduction, thereby reducing the yield of light oil and increasing the yield of hydrogen and coke. For metal pollution of catalytic cracking catalyst, besides the industrial demetallization pretreatment of raw material and selection of catalyst with strong metal-resisting capability, the method can also improve the property of catalyst by increasing the replacement rate of catalyst, and use passivating agent to inhibit the toxic action of metal in raw material on catalyst. Among them, the use of a passivating agent is the simplest and most effective method.
The metal passivator on the market is generally prepared by compounding a plurality of components, the components often contain low-melting-point organic matters, and due to the characteristics of chemical enterprises, potential safety hazards are easily caused if the low-melting-point organic matters are improperly stored or meet open fire.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an environment-friendly multi-metal passivator aiming at the defects of the prior art.
The invention also aims to disclose a preparation method of the environment-friendly multi-metal passivator.
The technical scheme is as follows: in order to achieve the above object, the present invention is specifically realized as follows: the environment-friendly multi-metal passivator comprises the following components in parts by weight: 50-60 parts of boric acid, 20-30 parts of glycerol, 10-15 parts of calcium stearate, 10-15 parts of sodium carbonate, 5-10 parts of sodium hydroxide and 30-40 parts of deionized water.
According to the method for preparing the environment-friendly multi-metal passivator, boric acid, glycerol, calcium stearate, sodium carbonate, sodium hydroxide and deionized water are measured according to the formula and sequentially put into a reaction kettle, mixed and stirred, the temperature is controlled to be 70-80 ℃, the mixture is heated for 40-60 min, then heated to boiling, refluxed for 40-60 min, cooled to room temperature, and the pH value is controlled to be 7-8 through a pH regulator, so that the environment-friendly multi-metal passivator is obtained.
Wherein the pH regulator is sodium carbonate, sodium bicarbonate, disodium bicarbonate or sodium hydroxide.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) all the raw material components are inorganic compounds, and the melting point of the organic carbon hydride is higher than that of organic hydrocarbon, so that the organic carbon hydride is more convenient and safer to store;
(2) the invention mainly takes boron compound and calcium compound as raw materials to synthesize the inhibitor aiming at various metals such as nickel, alum and aluminum;
(3) the raw materials do not contain any harmful substances, so that the environment is protected, the harm to operators is reduced, and the downstream processing and the product quality are not affected;
(4) compared with the traditional rare earth inhibitor, the rare earth inhibitor saves the national rare earth resources and reduces the production cost of enterprises.
Detailed Description
The implementation of 1:
and (2) taking 50 parts by weight of boric acid, 20 parts by weight of glycerol, 10 parts by weight of calcium stearate, 10 parts by weight of sodium carbonate, 5 parts by weight of sodium hydroxide and 30 parts by weight of deionized water, sequentially putting into a reaction kettle, mixing and stirring, controlling the temperature at 70 ℃, heating for 40min, then heating to boil, refluxing for 40min, cooling to room temperature, and controlling the pH value of 7 through a pH regulator to obtain the compound.
The implementation of 2:
and (2) taking 60 parts by weight of boric acid, 30 parts by weight of glycerol, 15 parts by weight of calcium stearate, 15 parts by weight of sodium carbonate, 10 parts by weight of sodium hydroxide and 40 parts by weight of deionized water, sequentially putting the boric acid, the glycerol, the calcium stearate, the sodium carbonate, the sodium hydroxide and the deionized water into a reaction kettle, mixing and stirring the mixture, controlling the temperature to be 80 ℃, heating the mixture for 60min, then heating the mixture to be boiling, refluxing the mixture for 60min, cooling the mixture to room temperature, and controlling the pH.
The implementation of 3:
and (2) taking 55 parts by weight of boric acid, 25 parts by weight of glycerol, 13 parts by weight of calcium stearate, 12 parts by weight of sodium carbonate, 8 parts by weight of sodium hydroxide and 35 parts by weight of deionized water, sequentially putting the boric acid, the glycerol, the calcium stearate, the sodium carbonate, the sodium hydroxide and the deionized water into a reaction kettle, mixing and stirring the mixture, controlling the temperature to be 75 ℃, heating the mixture for 50min, then heating the mixture to be boiling, refluxing the mixture for 50min, cooling the mixture to room temperature, and controlling the pH.
The implementation of 4:
and (2) taking 52 parts by weight of boric acid, 23 parts by weight of glycerol, 11 parts by weight of calcium stearate, 14 parts by weight of sodium carbonate, 6 parts by weight of sodium hydroxide and 32 parts by weight of deionized water, sequentially putting the boric acid, the glycerol, the calcium stearate, the sodium carbonate, the sodium hydroxide and the deionized water into a reaction kettle, mixing and stirring the mixture, controlling the temperature to be 72 ℃, heating the mixture for 45min, then heating the mixture to be boiling, refluxing the mixture for 43min, cooling the mixture to room temperature, and controlling the pH.
The implementation of 5:
and (2) taking 58 parts by weight of boric acid, 27 parts by weight of glycerol, 14 parts by weight of calcium stearate, 13 parts by weight of sodium carbonate, 9 parts by weight of sodium hydroxide and 38 parts by weight of deionized water, sequentially putting into a reaction kettle, mixing and stirring, controlling the temperature at 78 ℃, heating for 55min, then heating to boil, refluxing for 56min, cooling to room temperature, and controlling the pH value to 7 through a pH regulator to obtain the aqueous solution.
Claims (3)
1. The environment-friendly multi-metal passivator is characterized by comprising the following components in parts by weight: 50-60 parts of boric acid, 20-30 parts of glycerol, 10-15 parts of calcium stearate, 10-15 parts of sodium carbonate, 5-10 parts of sodium hydroxide and 30-40 parts of deionized water.
2. The method for preparing the environment-friendly multi-metal passivator as claimed in claim 1, characterized in that boric acid, glycerol, calcium stearate, sodium carbonate, sodium hydroxide and deionized water are measured according to a formula and sequentially put into a reaction kettle, mixed and stirred, the temperature is controlled at 70-80 ℃, heated for 40-60 min, then heated to boiling, refluxed for 40-60 min, cooled to room temperature, and the pH is controlled at 7-8 through a pH regulator, so that the environment-friendly multi-metal passivator is obtained.
3. The method for preparing the environment-friendly multi-metal passivator of claim 2, wherein the pH regulator is sodium carbonate, sodium bicarbonate, disodium bicarbonate or sodium hydroxide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911416359.6A CN111054449A (en) | 2019-12-31 | 2019-12-31 | Environment-friendly multi-metal passivator and preparation method thereof |
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| CN201911416359.6A CN111054449A (en) | 2019-12-31 | 2019-12-31 | Environment-friendly multi-metal passivator and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442695A (en) * | 2020-11-06 | 2021-03-05 | 宜兴汉光高新石化有限公司 | Corrosion inhibitor and preparation method thereof |
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| CN112442695A (en) * | 2020-11-06 | 2021-03-05 | 宜兴汉光高新石化有限公司 | Corrosion inhibitor and preparation method thereof |
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