Efficient coal-saving catalyst and preparation method thereof

Abstract

The invention provides a high-efficiency coal-saving catalyst and a preparation method thereof. The high-efficiency coal-saving catalyst is prepared from the following raw materials: coal-saving composite powder and organic activation dispersion liquid, according to the efficient coal-saving catalyst disclosed by the invention, through the interaction of the coal-saving composite powder and the organic activation dispersion liquid, the efficient coal-saving catalyst enhances the activity of the surface of coal, lowers the ignition point of the coal, improves the combustion efficiency, reduces the coal consumption and reduces the emission of sulfur dioxide and nitrogen oxide; the device is suitable for various large, medium and small civil and industrial coal-fired boilers.

Description

Technical Field

[0001] The invention relates to the technical field of coal-saving catalysts, and in particular to a high-efficiency coal-saving catalyst and a preparation method thereof. Background Art

[0002] With the continuous growth of global energy demand and the increasingly serious environmental problems, improving energy efficiency, reducing energy consumption and reducing pollutant emissions have become important issues facing the world today. As one of the world's most important energy sources, coal occupies an important position in the energy consumption structure. However, coal combustion efficiency is low and it will produce a large amount of pollutants, such as sulfur dioxide, nitrogen oxides, particulate matter, etc., which cause serious pollution to the environment. In order to solve these problems, coal-saving catalysts came into being. Coal-saving catalysts are a kind of chemical additives that can improve coal combustion efficiency and reduce pollutant emissions, and have broad application prospects.

[0003] At present, the combustion efficiency of coal is low. Due to the complex structure of coal, there are many factors that are not conducive to combustion during the combustion process, such as the pore structure, mineral content, moisture content, etc. of coal, which leads to low combustion efficiency of coal. According to statistics, the average combustion efficiency of industrial boilers in my country is only about 60%. A large amount of pollutants such as sulfur dioxide, nitrogen oxides, particulate matter, etc. will be generated during the combustion of coal. These pollutants will not only cause serious pollution to the environment, but also cause harm to human health. Sulfur dioxide and nitrogen oxides are the main causes of acid rain and photochemical smog, and particulate matter will cause damage to the human respiratory system. With the continuous improvement of environmental protection requirements, reducing pollutant emissions during coal combustion has become an urgent problem that needs to be solved.

[0004] Coal-saving catalysts improve the combustion efficiency of coal by changing the combustion process of coal. Specifically, coal-saving catalysts can promote the pyrolysis of coal and the combustion of volatiles, reduce the ignition temperature and combustion temperature of coal, shorten the combustion time of coal, and thus improve the combustion efficiency of coal. In addition, coal-saving catalysts can also improve the pore structure of coal, increase the specific surface area of ​​coal, and increase the contact area between coal and oxygen, thereby promoting the combustion of coal. Coal-saving catalysts can reduce pollutant emissions during coal combustion in a variety of ways. First, coal-saving catalysts can promote the complete combustion of coal and reduce the generation of incomplete combustion products, thereby reducing pollutant emissions. Secondly, coal-saving catalysts can react with sulfur, nitrogen and other elements in coal to generate stable compounds, thereby reducing the emission of sulfur dioxide and nitrogen oxides. In addition, coal-saving catalysts can also adsorb particulate matter generated during coal combustion and reduce particulate matter emissions. However, with the continuous improvement of environmental protection requirements, the performance requirements for coal-saving catalysts are also getting higher and higher. Coal-saving catalysts need to develop in the direction of high performance, and need to have higher catalytic activity, stability, environmental protection, multifunctionality and low cost.

[0005] In view of the problems existing in the prior art, the present application aims to solve the problem that the coal-saving catalyst has no obvious effect on reducing the ignition point of coal, and has insufficient effect on the combustion efficiency and coal-saving efficiency of coal. Summary of the invention

[0006] Purpose of the invention:

[0007] The purpose of the present invention is to provide a high-efficiency coal-saving catalyst to solve the problems of insufficient combustion efficiency, coal-saving efficiency and stability of the coal-saving catalyst.

[0008] The technical solution of the present invention:

[0009] A high-efficiency coal-saving catalyst is characterized in that the raw materials of the high-efficiency coal-saving catalyst include: coal-saving composite powder and organic activated dispersion.

[0010] Furthermore, the coal-saving composite powder comprises, by weight, 20 to 30 parts of sulfate, 10 to 20 parts of alkali metal chlorate, and 8 to 15 parts of alkaline earth metal oxide.

[0011] Furthermore, the organic activated dispersion liquid raw materials include, by weight: 20 to 30 parts of polyol ester penetrant, 10 to 15 parts of benzene sulfonate, 10 to 15 parts of amine activator, and 20 to 50 parts of water.

[0012] Furthermore, the mass ratio of the coal-saving composite powder to the organic activated dispersion is 1 to 2.5:1.

[0013] The preparation method of the polyol ester penetrant comprises the following steps:

[0014] S1: weigh trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate, sodium lauryl alcohol ether sulfate and water in proportion and set aside;

[0015] S2: Add water to the reaction kettle, start stirring, slowly heat to 60-80° C., then slowly add the trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate, and sodium dodecyl alcohol ether sulfate weighed in step S1, stir well, and react for 1-2 hours;

[0016] S3: After the reaction is completed, the pH value is adjusted to 6-7, and then filtered to obtain a polyol ester penetrant.

[0017] Furthermore, the mass ratio of trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate and sodium dodecyl alcohol ether sulfate is 1.5-2.5:1:2-4.

[0018] The preparation method of trimethylolpropane polyoxyethylene ether comprises the following steps:

[0019] SS1: weigh trimethylolpropane, ethylene oxide and SSZ-13 molecular sieve in proportion and set aside;

[0020] SS2: put the trimethylolpropane weighed in step SS1 into a high-pressure reactor, then add the ssz-13 molecular sieve weighed in step SS1, replace the air with nitrogen, stir slowly, and raise the temperature to 120-160°C;

[0021] SS3: When the temperature reaches 120-160°C, slowly introduce the ethylene oxide weighed in step SS1 and react for 4-6 hours;

[0022] SS4: After the reaction is completed, the mixture is cooled to room temperature, and the product is filtered and washed to obtain trimethylolpropane polyoxyethylene ether.

[0023] Furthermore, the mass ratio of trimethylolpropane to ethylene oxide is 1:8-12.

[0024] Furthermore, the coal-saving composite powder is prepared by mixing and grinding sulfate, alkali metal chlorate and alkaline earth metal oxide.

[0025] Furthermore, the sulfate is a mixture of one or more of iron sulfate and manganese sulfate.

[0026] Furthermore, the alkali metal chlorate is a mixture of one or more of potassium chlorate and potassium perchlorate.

[0027] Furthermore, the alkaline earth metal oxide is a mixture of one or more of calcium oxide and magnesium oxide.

[0028] Furthermore, the organic activated dispersion is prepared by mixing a polyol ester penetrant, a benzene sulfonate, an amine activator and water.

[0029] Furthermore, the benzenesulfonate is 1,5-naphthalene disulfonic acid sodium salt; and the amine activator is octadecyl primary amine.

[0030] The present application also provides a method for preparing a high-efficiency coal-saving catalyst, which is characterized in that it includes the following steps: under nitrogen protection, adding an organic activated dispersion into a three-necked flask with a stirring device, and then slowly adding a coal-saving composite powder, stirring at a speed of 200 to 300 rpm / min for 1 to 2 hours to obtain a high-efficiency coal-saving catalyst.

[0031] Sulfate may decompose at high temperature to produce oxygen, which promotes the oxidation combustion reaction of coal. Increasing the supply of oxygen helps coal burn more fully, improves combustion efficiency, and reduces the generation of incomplete combustion products, thereby saving coal. Sulfate usually has high thermal stability, is not easy to decompose or volatilize in the high temperature environment of coal combustion, and can maintain the stability of its structure and function. At the same time, sulfate can combine with some impurities in coal to form stable compounds, reduce the interference of impurities on the combustion process, and improve the overall stability of the catalyst. Alkali metal chlorates have strong oxidizing properties and can release a large amount of oxygen during the combustion process, providing sufficient oxygen source for coal combustion and accelerating the combustion reaction. Alkali metal chlorates have good stability under certain conditions, but care should be taken to avoid contact with flammable materials to prevent danger. During the combustion of coal, the decomposition of alkali metal chlorates is controllable, and the rate of oxygen release can match the combustion reaction, thereby ensuring the stability of the catalyst. Alkaline earth metal oxides can react with impurities such as sulfur in coal to form stable compounds, reduce the emission of sulfur oxides, and at the same time reduce the impurity content in coal, reduce the ignition point of coal, and improve the combustion efficiency of coal. In addition, alkaline earth metal oxides can also absorb the heat generated during the combustion process, promote the pyrolysis of coal and the combustion of volatiles, and improve combustion efficiency. Alkaline earth metal oxides usually have high chemical stability and thermal stability, are not prone to chemical reactions or decomposition during coal combustion, and can maintain the stability of their structure and performance. At the same time, alkaline earth metal oxides can interact with other components to form stable complexes, reducing the ignition point of coal. The effect of the prepared coal-saving composite powder is doubled by mixing and grinding sulfate, alkali metal chlorate, and alkaline earth metal oxide.

[0032] Polyol ester penetrants can improve the surface properties of coal, increase the contact area between coal and oxygen, and promote the combustion reaction. It can penetrate into the pores of coal, making it easier for the combustible materials inside the coal to contact oxygen and improve the combustion efficiency. In addition, polyol ester penetrants can also reduce the surface tension of coal, making it easier for the gas produced by combustion to escape, reducing the residence time of the gas inside the coal, and improving the combustion efficiency. Polyol ester penetrants have good chemical stability and thermal stability, and are not easy to decompose or volatilize during the combustion of coal. It can interact with other components to form a stable dispersion system and improve the stability of the catalyst. At the same time, the penetration of polyol ester penetrants can make the catalyst better distributed on the surface and inside of the coal, reduce the ignition point of the coal, and improve the effect of the catalyst. Benzene sulfonate can be used as a surfactant to reduce the surface tension of coal, making coal easier to be wetted by water, thereby improving the combustion efficiency of coal. In addition, benzene sulfonate can also combine with metal ions in coal to form a stable complex, reduce the inhibitory effect of metal ions on the combustion reaction, and improve the combustion efficiency. Benzene sulfonate has good chemical stability and thermal stability, and is not easy to decompose or volatilize during the combustion of coal. It can interact with other components to form a stable complex and improve the overall stability of the catalyst. At the same time, the surface activity of benzene sulfonate can make the catalyst better dispersed on the surface and inside of coal, improving the effect and stability of the catalyst. Amine activators can react with acidic substances in coal, neutralize the acidic components in coal, and improve the combustion efficiency of coal. In addition, amine activators can also promote the pyrolysis of coal and the combustion of volatiles, thereby improving the combustion efficiency. Amine activators have good chemical stability and thermal stability, and are not easy to decompose or volatilize during the combustion of coal. It can interact with other components to form a stable complex and improve the overall stability of the catalyst. At the same time, the activation effect of amine activators can make coal easier to burn and improve the effect and stability of the catalyst. The prepared organic activated dispersion has strong activity and penetration ability, and the high-efficiency coal-saving catalyst prepared by mixing with the coal-saving composite powder has high activity, reduces the ignition point of coal, and has high catalytic efficiency, thereby increasing the combustion efficiency of coal and the coal-saving efficiency.

[0033] Beneficial effects:

[0034] The high-efficiency coal-saving catalyst of the present invention interacts with the coal-saving composite powder and the organic activated dispersion liquid, so that the high-efficiency coal-saving catalyst enhances the activity of the coal surface, reduces the ignition point of the coal, improves the combustion efficiency, reduces the coal consumption, and reduces the emission of sulfur dioxide and nitrogen oxides. It has a good development prospect for protecting the environment and is suitable for various large, medium and small civil and industrial coal-fired boilers. DETAILED DESCRIPTION

[0035] The present invention will be described below in conjunction with specific embodiments. It should be noted that the following embodiments are examples of the present invention and are only used to illustrate the present invention, but not to limit the present invention. Other combinations and various modifications within the concept of the present invention may be performed without departing from the spirit or scope of the present invention.

[0036] Unless otherwise specified, the chemical reagents used in the present invention are all commercially available analytically pure.

[0037] Preparation of coal-saving composite powder:

[0038] According to 1g as one portion, 10g of ferric sulfate, 10g of manganese sulfate, 5g of potassium chlorate, 10g of potassium perchlorate and 12g of magnesium oxide were weighed and mixed for 1.5 hours, and sieved through a 200-mesh sieve to obtain a coal-saving composite powder.

[0039] Preparation of trimethylolpropane polyoxyethylene ether a1:

[0040] SS1: weigh 2g trimethylolpropane, 16g ethylene oxide, and 1g SSZ-13 molecular sieve in proportion and set aside;

[0041] SS2: put the trimethylolpropane weighed in step SS1 into a high-pressure reactor, then add the ssz-13 molecular sieve weighed in step SS1, replace the air with nitrogen, stir slowly, and raise the temperature to 120°C;

[0042] SS3: When the temperature reaches 120°C, slowly introduce the ethylene oxide weighed in step SS1 and react for 6 hours;

[0043] SS4: After the reaction is completed, the mixture is cooled to room temperature, and the product is filtered and washed to obtain trimethylolpropane polyoxyethylene ether A.

[0044] Preparation of trimethylolpropane polyoxyethylene ether b1:

[0045] The difference between this preparation and trimethylolpropane polyoxyethylene ether A is that the 2 g trimethylolpropane and 16 g ethylene oxide weighed in step SS1 are replaced by 2 g trimethylolpropane and 10 g ethylene oxide.

[0046] Preparation of trimethylolpropane polyoxyethylene ether c1:

[0047] The difference between this preparation and trimethylolpropane polyoxyethylene ether a1 is that the 2 g trimethylolpropane and 16 g ethylene oxide weighed in step SS1 are replaced with 2 g trimethylolpropane and 30 g ethylene oxide.

[0048] Preparation of polyol ester penetrant A:

[0049] S1: weigh 20g of trimethylolpropane polyoxyethylene ether a1, 10g of sodium α-olefin sulfonate, 20g of sodium dodecyl alcohol ether sulfate, and 2.5L of water in proportion and set aside;

[0050] S2: Add water to the reaction kettle, start stirring, slowly heat to 75°C, then slowly add the trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate, and sodium dodecyl alcohol ether sulfate weighed in step S1, stir well, and react for 2 hours;

[0051] S3: After the reaction is completed, the pH value is adjusted to 7, and then filtered to obtain polyol ester penetrant A.

[0052] Preparation of polyol ester penetrant B:

[0053] The difference between this preparation and polyol ester penetrant A is that 20g of trimethylolpropane polyoxyethylene ether a1, 10g sodium α-olefin sulfonate, and 20g sodium dodecyl alcohol ether sulfate weighed in step S1 are replaced with 10g of trimethylolpropane polyoxyethylene ether a1, 10g sodium α-olefin sulfonate, and 50g sodium dodecyl alcohol ether sulfate.

[0054] Preparation of polyol ester penetrant C:

[0055] The difference between the present preparation and the polyol ester penetrant A is that the 20 g of trimethylolpropane polyoxyethylene ether a1 weighed in step S1 is replaced with 20 g of trimethylolpropane polyoxyethylene ether b1.

[0056] Preparation of polyol ester penetrant D:

[0057] The difference between the present preparation and the polyol ester penetrant A is that the 20 g of trimethylolpropane polyoxyethylene ether a1 weighed in step S1 is replaced with 20 g of trimethylolpropane polyoxyethylene ether c1.

[0058] Preparation of organic activated dispersion A:

[0059] According to 1 g portion, 20 g of polyol ester penetrant A, 10 g of 1,5-naphthalene disulfonic acid sodium salt, 15 g of octadecyl primary amine, and 25 g of water were put into a reaction kettle and stirred for 1.5 hours to prepare an organic activated dispersion A.

[0060] Preparation of organic activated dispersion B:

[0061] 20 g of polyol ester penetrant B, 10 g of 1,5-naphthalene disulfonic acid sodium salt, 15 g of octadecyl primary amine, and 25 g of water were placed in a reaction kettle and stirred for 1.5 hours to obtain an organic activated dispersion B.

[0062] Preparation of organic activated dispersion C:

[0063] 20 g of polyol ester penetrant C, 10 g of 1,5-naphthalene disulfonic acid sodium salt, 15 g of octadecyl primary amine, and 25 g of water were placed in a reaction kettle and stirred for 1.5 hours to obtain an organic activated dispersion C.

[0064] Preparation of organic activated dispersion D:

[0065] 20 g of polyol ester penetrant D, 10 g of 1,5-naphthalene disulfonic acid sodium salt, 15 g of octadecyl primary amine, and 25 g of water were placed in a reaction kettle and stirred for 1.5 hours to obtain an organic activated dispersion D.

[0066] Preparation of high-efficiency coal-saving catalyst:

[0067] Under nitrogen protection, add the organic activated dispersion into a three-necked flask with a stirring device, then slowly add the coal-saving composite powder, and stir at a speed of 200 rpm / min for 1 hour to obtain a high-efficiency coal-saving catalyst.

[0068] Examples 1 to 6

[0069] The high-efficiency coal-saving catalyst was prepared according to the above-mentioned preparation method. Table 1 is the ingredient list of the high-efficiency coal-saving catalyst of Examples 1 to 6.

[0070] Table 1 Ingredients of high-efficiency coal-saving catalysts of Examples 1 to 6

[0071]

[0072] Comparative Examples 1-2

[0073] The high-efficiency coal-saving catalyst was prepared according to the above-mentioned preparation method. Table 2 is the ingredient list of the high-efficiency coal-saving catalyst of Comparative Examples 1-2.

[0074] Table 2 Ingredients of high-efficiency coal-saving catalysts for comparative examples 1 to 2

[0075]

[0076] Performance test experiment:

[0077] The coal-saving catalysts prepared in Examples 1 to 6 and Comparative Examples 1 to 2 and diluted with water at a mass ratio of 1:10 were added to the raw coal samples respectively, and added to the raw coal in a spraying manner, and the added amount was 0.1% of the mass of the raw coal. Another group of raw coal samples without adding the coal-saving catalyst were set up, and their coal ignition point, combustion efficiency and clinker standard coal consumption were tested respectively.

[0078] 1. Coal ignition point test: According to the standard GB / T18511-2017, the ignition points of the raw coal without the addition of the coal-saving catalyst, the coal-saving catalyst samples prepared in Examples 1 to 6 and Comparative Examples 1 to 2 were tested, the samples were placed in a sample tube, the sample tube was placed in the circular holes around the heating body, and the heating body was placed in the heating furnace of the measuring instrument, the power was started, and the test was started according to the instrument manual, the ignition point of the coal was measured, and the amount of reduction in the ignition point of the coal was calculated.

[0079] 2. Coal combustion efficiency: 1 kg of coal samples with and without coal-saving catalyst added are placed into the oxygen bomb of the oxygen bomb calorimeter respectively, and oxygen is added to ensure that there is sufficient oxygen to support combustion. The oxygen bomb is placed in the calorimeter, and the calorimeter is started to perform a combustion experiment. The calorimeter will measure the heat released during the combustion process. The combustion efficiency of the coal with catalyst added = the heat of the coal after adding the catalyst / theoretical heat of the coal × 100%, and the combustion efficiency of the blank group = the heat of the coal without adding the catalyst / theoretical heat of the coal × 100%.

[0080] 3. Standard coal consumption per ton of clinker: Raw coal to which the coal-saving catalyst prepared in Examples 1 to 6 and Comparative Examples 1 to 2 is added and raw coal without the addition of the coal-saving catalyst is put into a combustion furnace respectively. The calcination is carried out according to the reference standard GB / T26566-2011. The maximum constant temperature is controlled at 1350°C and the air flow rate is 50L / min. The amount of coal consumed per unit of clinker is tested and converted into the standard coal consumption per ton of clinker.

[0081] Performance test results Table 3:

[0082]

[0083] As can be seen from Table 3, the high-efficiency coal-saving catalyst of the present invention can reduce the ignition point of coal, so that the coal has high combustion efficiency and coal-saving efficiency. Specifically, from the comparison between Example 4 and Example 2, it can be seen that when the polyol ester penetrant of the organic activated dispersion is prepared, the unreasonable mass ratio of trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate, and sodium dodecyl alcohol ether sulfate will lead to poor effect of the high-efficiency coal-saving catalyst in reducing the ignition point of coal, poor combustion efficiency and coal-saving efficiency of coal, and the expected effect cannot be achieved; from the comparison between Examples 5 to 6 and Example 2, it can be seen that when the polyol ester penetrant of the organic activated dispersion is prepared, the unreasonable mass ratio of trimethylolpropane and ethylene oxide used to synthesize trimethylolpropane polyoxyethylene ether will lead to poor effect of the high-efficiency coal-saving catalyst in reducing the ignition point of coal, poor combustion efficiency and coal-saving efficiency of coal, and the expected effect cannot be achieved;

[0084] It can be seen from Comparative Example 1 and Example 2 that without using the coal-saving composite powder and only using manganese sulfate, the high-efficiency coal-saving catalyst will have a poor effect on lowering the ignition point of coal, and the combustion efficiency and coal-saving efficiency of coal will deteriorate, and the expected effect will not be achieved; By comparing Comparative Example 2 with Example 2, it can be seen that replacing the organic activated dispersion with alcohol ether phosphate on the market will cause the high-efficiency coal-saving catalyst to have a poor effect on lowering the ignition point of coal, and the combustion efficiency and coal-saving efficiency of coal will deteriorate, and the expected effect will not be achieved.

[0085] The present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A highly efficient coal-saving catalyst, characterized in that: The raw materials of the high-efficiency coal-saving catalyst include: coal-saving composite powder and organic activated dispersion.

2. The high-efficiency coal-saving catalyst according to claim 1, characterized in that: The coal-saving composite powder comprises, by weight: 20 to 30 parts of sulfate, 10 to 20 parts of alkali metal chlorate, and 8 to 15 parts of alkaline earth metal oxide; the organic activated dispersion liquid raw material comprises, by weight: 20 to 30 parts of polyol ester penetrant, 10 to 15 parts of benzene sulfonate, 10 to 15 parts of amine activator, and 20 to 50 parts of water.

3. The high-efficiency coal-saving catalyst according to claim 1, characterized in that: The mass ratio of the coal-saving composite powder to the organic activated dispersion is 1-2.5:

1.

4. The high-efficiency coal-saving catalyst according to claim 2, characterized in that: The preparation method of the polyol ester penetrant comprises the following steps: S1: weigh trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate, sodium lauryl alcohol ether sulfate and water in proportion and set aside; S2: Add water to the reaction kettle, start stirring, slowly heat to 60-80° C., then slowly add the trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate, and sodium dodecyl alcohol ether sulfate weighed in step S1, stir well, and react for 1-2 hours; S3: After the reaction is completed, the pH value is adjusted to 6-7, and then filtered to obtain a polyol ester penetrant.

5. The high-efficiency coal-saving catalyst according to claim 4, characterized in that: The mass ratio of trimethylolpropane polyoxyethylene ether, sodium α-olefin sulfonate and sodium dodecyl alcohol ether sulfate is 1.5-2.5:1:2-4.

6. The high-efficiency coal-saving catalyst according to claim 4, characterized in that: The preparation method of trimethylolpropane polyoxyethylene ether comprises the following steps: SS1: weigh trimethylolpropane, ethylene oxide and SSZ-13 molecular sieve in proportion and set aside; SS2: put the trimethylolpropane weighed in step SS1 into a high-pressure reactor, then add the ssz-13 molecular sieve weighed in step SS1, replace the air with nitrogen, stir slowly, and raise the temperature to 120-160°C; SS3: When the temperature reaches 120-160°C, slowly introduce the ethylene oxide weighed in step SS1 and react for 4-6 hours; SS4: After the reaction is completed, the mixture is cooled to room temperature, and the product is filtered and washed to obtain trimethylolpropane polyoxyethylene ether.

7. The high-efficiency coal-saving catalyst according to claim 6, characterized in that: The mass ratio of trimethylolpropane to ethylene oxide is 1:8-12.

8. The high-efficiency coal-saving catalyst according to claim 2, characterized in that: The coal-saving composite powder is prepared by mixing and grinding sulfate, alkali metal chlorate and alkaline earth metal oxide; the sulfate is a mixture of one or more of iron sulfate and manganese sulfate; the alkali metal chlorate is a mixture of one or more of potassium chlorate and potassium perchlorate; the alkaline earth metal oxide is a mixture of one or more of calcium oxide and magnesium oxide.

9. The high-efficiency coal-saving catalyst according to claim 2, characterized in that: The organic activated dispersion is prepared by mixing a polyol ester penetrant, benzenesulfonate, an amine activator and water; the benzenesulfonate is 1,5-naphthalene disulfonic acid sodium salt; and the amine activator is octadecyl primary amine.

10. The method for preparing a high-efficiency coal-saving catalyst according to any one of claims 1 to 8, characterized in that: The following steps are involved: Under nitrogen protection, add organic activated dispersion into a three-necked flask with a stirring device, then slowly add coal-saving composite powder, and stir at a speed of 200-300 rpm / min for 1-2 hours to obtain a high-efficiency coal-saving catalyst.

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