Low-cost recycling process of carbide slag in acetylene production

A low-cost technology of carbide slag, which is applied in the field of low-cost recycling technology of carbide slag in the production of acetylene, can solve the problems that the strong alkalinity treatment ability of carbide slag needs to be tapped and utilized, and achieves the convenience of recycling waste, reducing acidity, and strong activity Effect

Pending Publication Date: 2022-03-22
HWASU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, calcium carbide slag is generally used instead of limestone to make cement and produce quicklime, which is used as calcium carbide raw material, chemical products, and building materials. However, in the face of increasingly serious soil acid and vulca

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  • Low-cost recycling process of carbide slag in acetylene production

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Embodiment 1

[0029] according to figure 1 As shown, this embodiment proposes a low-cost recycling process for carbide slag in the production of acetylene, including the following steps:

[0030] Step 1: collect materials, collect livestock and poultry manure and plant stumps, stems and leaves, collect carbide slag produced in acetylene production, and keep it for later use;

[0031] Step 2: material treatment, sealing and retting livestock and poultry manure into organic humus, and anaerobically fermenting plant residues, stems and leaves into plant base materials, which are reserved for later use;

[0032] Step 3: remove impurities, carry out sieving and winnowing separation to the calcium carbide slag, and remove impurities;

[0033] Step 4: purifying and drying, purifying, dehydrating and drying the carbide slag to obtain dry carbide slag;

[0034] Step 5: mixing and stirring, discharging the dry calcium carbide slag into a pulverizer, pulverizing it into powder, then preparing powder...

Embodiment 2

[0040] This embodiment proposes a low-cost recycling process for carbide slag in the production of acetylene, including the following steps:

[0041] After collecting the livestock and poultry manure, heat the livestock and poultry manure and crush and stir it. After collecting the residual plant roots, stems and leaves, pulverize them to a length of 2-3 cm, use a baler to perform high-density compaction and baling, and collect calcium carbide Slag, choose carbide slag without any treatment.

[0042] Livestock and poultry manure is sealed and retting for 7-10 days to obtain organic decay. During this process, the temperature is controlled at 40-50°C, ammonium bicarbonate is added, and the residual roots, stems and leaves of plants are sealed and stacked, and anaerobic fermentation is carried out for 20- 30 days, and the temperature is controlled at 15-25°C.

[0043] Before removing impurities, collect industrial waste slag fly ash in power plants, add fly ash to carbide slag ...

Embodiment 3

[0054] This embodiment proposes a low-cost recycling process for carbide slag in the production of acetylene, wherein, in the secondary fermentation process, silicate bacteria, actinomycetes, nitrogen-fixing bacteria, mycorrhizal fungi, Bacillus subtilis, polymyxa Paenibacillus, Trichoderma and Streptococcus thermophilus were used as fermentation bacteria, and trace elements of manganese and boron were added.

[0055] The invention thus promotes fermentation and increases fertilizer nutrition.

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Abstract

The invention provides a low-cost recycling process of carbide slag in acetylene production, and relates to the technical field of industrial waste residue treatment, and the low-cost recycling process comprises the following steps: collecting materials, treating the materials, removing impurities, purifying and drying, mixing and stirring, secondarily crushing, mixing the raw materials, and drying and granulating. The method comprises the following steps: fermenting livestock and poultry manure and plant residual roots, stems and leaves into organic humus and a plant base material, synthesizing the organic humus and the plant base material into a fertilizer, removing impurities by using carbide slag, purifying, drying, crushing, mixing with powdery calcium oxide, curing to obtain calcium hydroxide powder, mixing the calcium hydroxide powder with the fertilizer, and carrying out double-roller granulation to obtain the soil treatment fertilizer. The fertilizer not only contains crude protein, crude fiber, crude fat, mineral substances and active factors required by soil, but also has an alkaline neutralization capability, can treat the soil acidification and vulcanization problems, reduce the soil acidity and improve the soil structure, has higher activity, does not generate carbon dioxide, and is more environment-friendly.

Description

technical field [0001] The invention relates to the technical field of industrial waste slag treatment, in particular to a low-cost recycling process of carbide slag in acetylene production. Background technique [0002] Calcium carbide slag, the waste residue mainly composed of calcium hydroxide after the hydrolysis of calcium carbide to obtain acetylene gas, acetylene (C2H2) is one of the important raw materials in the basic organic synthesis industry, using calcium carbide (CaC2) as raw material, adding water (wet method) to produce acetylene The process is simple and mature, and currently accounts for a large proportion in my country. Adding water to 1 ton of calcium carbide can generate more than 300 kg of acetylene gas, and at the same time generate 10 tons of industrial waste liquid with a solid content of about 12%, commonly known as calcium carbide slurry; [0003] In the prior art, calcium carbide slag is generally used instead of limestone to make cement and produc...

Claims

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Application Information

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IPC IPC(8): C05G3/80C05F17/50
CPCC05G3/80C05F17/50C05D3/02C05D9/00C05F11/00C05F11/02C05G5/12Y02W30/40
Inventor 赵凯卢鑫
Owner HWASU
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