Classification preparation process and composition of additive for coke residue deposition in high-alkali gas production

Abstract

The invention discloses an additive for coke residue deposition in high-alkali gas production and a grading preparation process. The additive comprises silicon dioxide, aluminum oxide, barium hydroxide, tea seed meal, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide. According to different chemical properties of silicon dioxide, aluminum oxide, barium hydroxide, tea seed meal, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide, a grading preparation method of sequentially mixing a soluble additive component and an indissolvable additive component with raw coal is adopted; the gasification efficiency of the high-alkali coal can be greatly improved, and the operation cost of the gasification furnace is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coal combustion, in particular to an additive for coke slag deposition in the production of high-alkali coal gas and a graded configuration process. Background Art

[0002] At present, my country's coal resources are mainly low-metamorphic bituminous coal (long flame coal, non-sticky coal, etc.), which are characterized by high ash content and high metal content, collectively referred to as high-alkali coal in this article. Its gasification process is serious coking. The production equipment cannot operate stably and safely for a long period of time, and the production labor intensity is too high, and the unsafe factors are greatly increased, which is one of the key technical bottlenecks that plague the safe production of coal gasification-related industries.

[0003] Therefore, it is necessary to propose a hierarchical configuration process and composition of additives for coke slag deposition in high-alkali coal gas production. Summary of the invention

[0004] The object of the present invention is to provide a hierarchical configuration process and composition of additives for coke slag deposition in high-alkali coal gas production, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solution: a hierarchical configuration process of an additive for coke slag deposition in high-alkali coal gas production, wherein the additive comprises silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide, and comprises the following steps:

[0006] S100, classification based on whether the components are soluble or insoluble in water;

[0007] S200, preparing a solution of components soluble in water;

[0008] S300, mixing the water-insoluble component with coal to obtain a mixture;

[0009] S400, spraying the solution onto the mixture and uniformly stirring it to obtain a wet mixture;

[0010] S500, sending the wet mixture into a gasifier for gasification reaction.

[0011] According to the above technical solution, the specific method of S200 solution configuration is as follows:

[0012] Potassium perchlorate, potassium chlorate, sodium chloride and sodium percarbonate are mixed in proportion by weight and added into water at a temperature of 0-5 DEG C to form a composite solvent.

[0013] According to the above technical solution, the method for preparing the mixture of S300 is as follows:

[0014] Silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, light magnesium oxide and manganese dioxide are mixed in proportions by weight to obtain a composite additive, and the composite additive is added into the grinding process of gasified raw coal to obtain a mixture.

[0015] According to the above technical solution, the weight ratio of the composite additive to coal powder is 3:100.

[0016] The invention discloses an additive for coke slag deposition in the production of high-alkali coal gas, comprising 24 to 26 parts by weight of silicon dioxide, 16 to 18 parts by weight of aluminum oxide, 10 to 12 parts by weight of barium hydroxide, 5 to 7 parts by weight of tea dregs, 4 to 6 parts by weight of potassium perchlorate, 3 to 4 parts by weight of potassium chlorate, 4 to 6 parts by weight of sodium chloride, 2 to 4 parts by weight of light magnesium oxide, 1 to 3 parts by weight of sodium percarbonate and 1 to 3 parts by weight of manganese dioxide.

[0017] According to the above technical scheme, the silicon dioxide is 24.5 parts by weight, the aluminum oxide is 16.5 parts by weight, the barium hydroxide is 11 parts by weight, the tea meal is 6.5 parts by weight, the potassium perchlorate is 4.5 parts by weight, the potassium chlorate is 3.3 parts by weight, the sodium chloride is 4.7 parts by weight, the light magnesium oxide is 2.3 parts by weight, the sodium percarbonate is 1.7 parts by weight, and the manganese dioxide is 1.2 parts by weight.

[0018] According to the above technical scheme, the silicon dioxide is 24.7 parts by weight, the aluminum oxide is 17.5 parts by weight, the barium hydroxide is 11.5 parts by weight, the tea meal is 6.5 parts by weight, the potassium perchlorate is 5 parts by weight, the potassium chlorate is 3.9 parts by weight, the sodium chloride is 4.8 parts by weight, the light magnesium oxide is 3.6 parts by weight, the sodium percarbonate is 1.9 parts by weight, and the manganese dioxide is 2.1 parts by weight.

[0019] According to the above technical scheme, the silicon dioxide is 26 parts by weight, the aluminum oxide is 17.5 parts by weight, the barium hydroxide is 12 parts by weight, the tea meal is 7 parts by weight, the potassium perchlorate is 6 parts by weight, the potassium chlorate is 4 parts by weight, the sodium chloride is 6 parts by weight, the light magnesium oxide is 2 parts by weight, the sodium percarbonate is 3 parts by weight, and the manganese dioxide is 3 parts by weight.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] The invention uses silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide with different chemical properties, adopts a graded preparation method in which a soluble additive component and a poorly soluble additive component are sequentially mixed with raw coal, and can greatly improve the gasification efficiency of high-alkali coal and reduce the operation cost of the gasifier while slowing down the deposition of coke slag in the gasification process of high-alkali coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a process flow diagram of the present invention; DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figure 1 The present invention provides a technical solution: based on a high-alkali coal gas production coke slag deposition additive graded configuration process, the additives include silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide, comprising the following steps:

[0027] S100, classification based on whether the components are soluble or insoluble in water;

[0028] S200, preparing a solution of components soluble in water;

[0029] S300, mixing the water-insoluble component with coal to obtain a mixture;

[0030] S400, spraying the solution onto the mixture and uniformly stirring it to obtain a wet mixture;

[0031] S500, sending the wet mixture into a gasifier for gasification reaction.

[0032] Specifically, the solution configuration method of S200 is as follows:

[0033] Potassium perchlorate, potassium chlorate, sodium chloride and sodium percarbonate are mixed in proportion by weight, and added into water at a temperature of 0-5 DEG C to form a composite solvent.

[0034] Specifically, the mixture preparation method of S300 is as follows:

[0035] Silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, light magnesium oxide and manganese dioxide are mixed in proportions by weight to obtain a composite additive, and the composite additive is added into the grinding process of gasified raw coal to obtain a mixture.

[0036] Specifically, the weight ratio of the composite additive to coal powder is 3:100.

[0037] The invention discloses an additive for coke slag deposition in the production of high-alkali coal gas, comprising 24 to 26 parts by weight of silicon dioxide, 16 to 18 parts by weight of aluminum oxide, 10 to 12 parts by weight of barium hydroxide, 5 to 7 parts by weight of tea dregs, 4 to 6 parts by weight of potassium perchlorate, 3 to 4 parts by weight of potassium chlorate, 4 to 6 parts by weight of sodium chloride, 2 to 4 parts by weight of light magnesium oxide, 1 to 3 parts by weight of sodium percarbonate and 1 to 3 parts by weight of manganese dioxide.

[0038] Specifically, the silicon dioxide is 24.5 parts by weight, the aluminum oxide is 16.5 parts by weight, the barium hydroxide is 11 parts by weight, the tea meal is 6.5 parts by weight, the potassium perchlorate is 4.5 parts by weight, the potassium chlorate is 3.3 parts by weight, the sodium chloride is 4.7 parts by weight, the light magnesium oxide is 2.3 parts by weight, the sodium percarbonate is 1.7 parts by weight, and the manganese dioxide is 1.2 parts by weight.

[0039] Based on the experimental results of Example 1:

[0040] 150t / h gasifier:

[0041] The continuous operation time was 6.8 months, and the coking rate was reduced by 4.94 percentage points.

[0042] 1176t / h gasifier:

[0043] The continuous operation time was 6.2 months, and the coking rate was reduced by 4.89 percentage points.

[0044]

[0045] Example 2

[0046] See also Figure 1The present invention provides a technical solution: based on a high-alkali coal gas production coke slag deposition additive graded configuration process, the additives include silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide, comprising the following steps:

[0047] S100, classification based on whether the components are soluble or insoluble in water;

[0048] S200, preparing a solution of components soluble in water;

[0049] S300, mixing the water-insoluble component with coal to obtain a mixture;

[0050] S400, spraying the solution onto the mixture and uniformly stirring it to obtain a wet mixture;

[0051] S500, sending the wet mixture into a gasifier for gasification reaction.

[0052] Specifically, the solution configuration method of S200 is as follows:

[0053] Potassium perchlorate, potassium chlorate, sodium chloride and sodium percarbonate are mixed in proportion by weight and added into water at a temperature of 0-5 DEG C to form a composite solvent.

[0054] Specifically, the mixture preparation method of S300 is as follows:

[0055] Silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, light magnesium oxide and manganese dioxide are mixed in proportions by weight to obtain a composite additive, and the composite additive is added into the grinding process of gasified raw coal to obtain a mixture.

[0056] Specifically, the weight ratio of the composite additive to coal powder is 3:100.

[0057] The invention discloses an additive for coke slag deposition in the production of high-alkali coal gas, comprising 24 to 26 parts by weight of silicon dioxide, 16 to 18 parts by weight of aluminum oxide, 10 to 12 parts by weight of barium hydroxide, 5 to 7 parts by weight of tea dregs, 4 to 6 parts by weight of potassium perchlorate, 3 to 4 parts by weight of potassium chlorate, 4 to 6 parts by weight of sodium chloride, 2 to 4 parts by weight of light magnesium oxide, 1 to 3 parts by weight of sodium percarbonate and 1 to 3 parts by weight of manganese dioxide.

[0058] Specifically, the silicon dioxide is 24.7 parts by weight, the aluminum oxide is 17.5 parts by weight, the barium hydroxide is 11.5 parts by weight, the tea meal is 6.5 parts by weight, the potassium perchlorate is 5 parts by weight, the potassium chlorate is 3.9 parts by weight, the sodium chloride is 4.8 parts by weight, the light magnesium oxide is 3.6 parts by weight, the sodium percarbonate is 1.9 parts by weight, and the manganese dioxide is 2.1 parts by weight.

[0059] Based on the experimental results of Example 2:

[0060] 150t / h gasifier:

[0061] The continuous operation time was 7.4 months, and the coking rate was reduced by 5.56 percentage points.

[0062] 1176t / h gasifier:

[0063] The continuous operation time was 6.8 months, and the coking rate was reduced by 6.12 percentage points.

[0064]

[0065] Example 3

[0066] See also Figure 1 The present invention provides a technical solution: based on a high-alkali coal gas production coke slag deposition additive graded configuration process, the additives include silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide, comprising the following steps:

[0067] S100, classification based on whether the components are soluble or insoluble in water;

[0068] S200, preparing a solution of components soluble in water;

[0069] S300, mixing the water-insoluble component with coal to obtain a mixture;

[0070] S400, spraying the solution onto the mixture and uniformly stirring it to obtain a wet mixture;

[0071] S500, sending the wet mixture into a gasifier for gasification reaction.

[0072] Specifically, the solution configuration method of S200 is as follows:

[0073] Potassium perchlorate, potassium chlorate, sodium chloride and sodium percarbonate are mixed in proportion by weight and added into water at a temperature of 0-5 DEG C to form a composite solvent.

[0074] Specifically, the mixture preparation method of S300 is as follows:

[0075] Silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, light magnesium oxide and manganese dioxide are mixed in proportions by weight to obtain a composite additive, and the composite additive is added into the grinding process of gasified raw coal to obtain a mixture.

[0076] Specifically, the weight ratio of the composite additive to coal powder is 3:100.

[0077] An additive for coke slag deposition in high-alkali coal gas production, comprising 24 to 26 parts by weight of silicon dioxide, 16 to 18 parts by weight of aluminum oxide, 10 to 12 parts by weight of barium hydroxide, 5 to 7 parts by weight of tea dregs, 4 to 6 parts by weight of potassium perchlorate, 3 to 4 parts by weight of potassium chlorate, 4 to 6 parts by weight of sodium chloride, 2 to 4 parts by weight of light magnesium oxide, 1 to 3 parts by weight of sodium percarbonate and 1 to 3 parts by weight of manganese dioxide.

[0078] Specifically, the silicon dioxide is 26 parts by weight, the aluminum oxide is 17.5 parts by weight, the barium hydroxide is 12 parts by weight, the tea meal is 7 parts by weight, the potassium perchlorate is 6 parts by weight, the potassium chlorate is 4 parts by weight, the sodium chloride is 6 parts by weight, the light magnesium oxide is 2 parts by weight, the sodium percarbonate is 3 parts by weight, and the manganese dioxide is 3 parts by weight.

[0079] Based on the experimental results of Example 3:

[0080] 150t / h gasifier:

[0081] The continuous operation time was 7.8 months, and the coking rate was reduced by 5.05 percentage points.

[0082] 1176t / h gasifier:

[0083] The continuous operation time was 7.2 months, and the coking rate was reduced by 6.24 percentage points.

[0084]

[0085] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0086] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hierarchical configuration process for additives for coke slag deposition in high-alkali coal gas production, wherein the additives include silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, potassium perchlorate, potassium chlorate, sodium chloride, light magnesium oxide, sodium percarbonate and manganese dioxide, characterized in that: The following steps are involved: S100, classification based on whether the components are soluble or insoluble in water; S200, preparing a solution of components soluble in water; S300, mixing the water-insoluble component with coal to obtain a mixture; S400, spraying the solution onto the mixture and uniformly stirring it to obtain a wet mixture; S500, sending the wet mixture into a gasifier for gasification reaction.

2. The hierarchical configuration process of an additive for coke slag deposition in high-alkali coal gas production according to claim 1, characterized in that: The specific method of S200 solution configuration is as follows: Potassium perchlorate, potassium chlorate, sodium chloride and sodium percarbonate are mixed in proportion by weight and added into water at a temperature of 0-5 DEG C to form a composite solvent.

3. The hierarchical configuration process of an additive for coke slag deposition in high-alkali coal gas production according to claim 1, characterized in that: The mixture of S300 is made as follows: Silicon dioxide, aluminum oxide, barium hydroxide, tea dregs, light magnesium oxide and manganese dioxide are mixed in proportions by weight to obtain a composite additive, and the composite additive is added into the grinding process of gasified raw coal to obtain a mixture.

4. The hierarchical configuration process of an additive for coke slag deposition in high-alkali coal gas production according to claim 3, characterized in that: The weight ratio of the composite additive to coal powder is 3:

100.

5. The composition of the additive for coke slag deposition in high-alkali coal gas production according to claims 1-4, characterized in that: The silicon dioxide is 24 to 26 parts by weight, the aluminum oxide is 16 to 18 parts by weight, the barium hydroxide is 10 to 12 parts by weight, the tea dregs are 5 to 7 parts by weight, the potassium perchlorate is 4 to 6 parts by weight, the potassium chlorate is 3 to 4 parts by weight, the sodium chloride is 4 to 6 parts by weight, the light magnesium oxide is 2 to 4 parts by weight, the sodium percarbonate is 1 to 3 parts by weight, and the manganese dioxide is 1 to 3 parts by weight.

6. The composition of the additive for coke slag deposition in high-alkali coal gas production according to claim 5, characterized in that: The silicon dioxide is 24.5 parts by weight, the aluminum oxide is 16.5 parts by weight, the barium hydroxide is 11 parts by weight, the tea meal is 6.5 parts by weight, the potassium perchlorate is 4.5 parts by weight, the potassium chlorate is 3.3 parts by weight, the sodium chloride is 4.7 parts by weight, the light magnesium oxide is 2.3 parts by weight, the sodium percarbonate is 1.7 parts by weight, and the manganese dioxide is 1.2 parts by weight.

7. The composition of the additive for coke slag deposition in high-alkali coal gas production according to claim 5, characterized in that: The silicon dioxide is 24.7 parts by weight, the aluminum oxide is 17.5 parts by weight, the barium hydroxide is 11.5 parts by weight, the tea meal is 6.5 parts by weight, the potassium perchlorate is 5 parts by weight, the potassium chlorate is 3.9 parts by weight, the sodium chloride is 4.8 parts by weight, the light magnesium oxide is 3.6 parts by weight, the sodium percarbonate is 1.9 parts by weight, and the manganese dioxide is 2.1 parts by weight.

8. The composition of the additive for coke slag deposition in high-alkali coal gas production according to claim 5, characterized in that: The silicon dioxide is 26 parts by weight, the aluminum oxide is 17.5 parts by weight, the barium hydroxide is 12 parts by weight, the tea meal is 7 parts by weight, the potassium perchlorate is 6 parts by weight, the potassium chlorate is 4 parts by weight, the sodium chloride is 6 parts by weight, the light magnesium oxide is 2 parts by weight, the sodium percarbonate is 3 parts by weight, and the manganese dioxide is 3 parts by weight.

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