Oil and gas field oil sludge anaerobic cracking product carbonaceous carbon-based fertilizer and preparation method thereof

A technology for pyrolysis products and sludge, which is applied in the direction of inorganic fertilizers, calcium fertilizers, nitrogen fertilizers, etc., can solve the problem of not being able to make good use of carbon in oil and gas field sludge pyrolysis solid products, and achieve scientific design, large specific surface area, and reduced Effects of diseases and pests

Inactive Publication Date: 2018-12-28

CHENGDU EN SHAIN TECH INC +1

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AI-Extracted Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a carbonaceous carbon-based fertilizer produced by anaerobic cracking of oil and gas f...

Abstract

The invention discloses an oil and gas field oil sludge anaerobic cracking product carbonaceous carbon-based fertilizer and a preparation method thereof, and solves the problem that the solid productcarbon after pyrolysis treatment of oil and gas field oil sludge is not well utilized in the prior art. The oil and gas field oil sludge anaerobic cracking product carbonaceous carbon-based fertilizeris prepared from the following raw materials in parts by weight: 40-70 parts of oil and gas field oil sludge cracking product carbon, 10-40 parts of lignin, 3-10 parts of sodium alginate, 5-10 partsof fertilizer, 1-5 parts of fertilizer additive, and 1-10 parts of calcium chloride. The design is scientific, the method is simple, the solid product carbon after pyrolysis treatment of oil and gas field oil sludge is well utilized, and the dilemma of resource application of the oil and gas field oil sludge is effectively solved.

Application Domain

Calcareous fertilisersOrganic fertilisers +3

Technology Topic

FertilizerChemistry +7

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Examples

Experimental program(6)

Example Embodiment

[0042] A preparation method of carbonaceous carbon-based fertilizer from the anaerobic cracking product of sludge in oil and gas fields includes the following steps:

[0043] Step 1. Preparation of Sodium Alginate Glue: After adding water to sodium alginate to make a sodium alginate solution, add some fertilizers and some fertilizer additives, and mix well to obtain sodium alginate glue;

[0044] Step 2. Preparation of the first mixed glue solution: After the carbonaceous product of the pyrolysis product of oil and gas field sludge and lignin is uniformly mixed, it is evenly mixed with the sodium alginate glue solution to obtain the first mixed glue solution;

[0045] Step 3. Prepare a second mixed glue solution: add calcium chloride with water to make a calcium chloride solution, and then add the remaining amount of fertilizer and the remaining amount of fertilizer additives to mix to obtain a second mixed glue solution;

[0046] Step 4. Cross-linking reaction: adding the first mixed glue solution to the second mixed glue solution to perform a cross-linking reaction to obtain the carbon-based fertilizer.

[0047] The mass concentration of the sodium alginate solution is 0.5-20%, and the mass concentration of the calcium chloride solution is 0.5-25%.

[0048] In the step 4, the temperature of the crosslinking reaction is 20-40°C.

[0049] In the step 1, the amount of fertilizer is 5-10 wt% of the total amount, and the amount of fertilizer additives is 1-5 wt% of the total amount.

Example Embodiment

[0050] Example 1

[0051] This example provides the preparation of the carbon-based fertilizer of the present invention.

[0052] The raw materials are composed of the following parts by weight: 60 parts of carbon (carbon content 20% by weight) cracked product of oil and gas field sludge, 20 parts of lignin, 5 parts of sodium alginate, 10 parts of urea, 1 part of polyglutamic acid, chlorine 4 parts of calcium.

[0053] The preparation method is:

[0054] Step 1. Preparation of sodium alginate glue: add sodium alginate to water to make a sodium alginate solution with a mass concentration of 0.5-%, then add part of urea and part of polyglutamic acid, and mix well to obtain a sodium alginate glue; Wherein, the amount of added urea is 10wt% of the total amount of urea, and the added polyglutamic acid is 1wt% of the total amount of polyglutamic acid;

[0055] Step 2. Preparation of the first mixed glue solution: After the carbonaceous and lignin pyrolysis products of oil and gas field sludge are uniformly mixed, they are uniformly mixed with the sodium alginate glue prepared in step 1 to obtain the first mixed glue solution;

[0056] Step 3. Prepare the second mixed glue solution: add calcium chloride and water to make a calcium chloride solution with a mass concentration of 25%, then add the remaining urea and the remaining polyglutamic acid to mix to obtain the second mixed glue;

[0057] Step 4. Cross-linking reaction: the first mixed glue solution is added to the second mixed glue solution, and the cross-linking reaction is performed at 40° C. to obtain the carbon-based fertilizer. The average particle size of the carbon-based fertilizer is 5mm.

Example Embodiment

[0058] Example 2

[0059] This example provides the preparation of the carbon-based fertilizer of the present invention.

[0060] The raw material is composed of the following parts by weight: 60 parts of carbon (carbon content 60% by weight) cracked product of oil and gas field sludge, 20 parts of lignin, 5 parts of sodium alginate, 10 parts of potassium chloride, and 1 part of polyaspartic acid Parts, 4 parts of calcium chloride.

[0061] The preparation method is:

[0062] Step 1. Preparation of sodium alginate glue: add water to sodium alginate to make a sodium alginate solution with a mass concentration of 20%, then add part of urea and part of polyglutamic acid, and mix well to obtain a sodium alginate glue; where , The amount of urea added is 5wt% of the total urea, and the polyglutamic acid added is 5wt% of the total polyglutamic acid;

[0063] Step 2. Preparation of the first mixed glue solution: After the carbonaceous and lignin pyrolysis products of oil and gas field sludge are uniformly mixed, they are uniformly mixed with the sodium alginate glue prepared in step 1 to obtain the first mixed glue solution;

[0064] Step 3. Prepare a second mixed glue solution: add calcium chloride and water to make a calcium chloride solution with a mass concentration of 0.5%, and then add the remaining urea and the remaining polyglutamic acid to mix to obtain the second mixed glue;

[0065] Step 4. Cross-linking reaction: the first mixed glue solution is added to the second mixed glue solution, and the cross-linking reaction is performed at 20° C. to obtain the carbon-based fertilizer. The average particle size of the carbon-based fertilizer is 1mm.

PUM

Property	Measurement	Unit
The average particle size	5.0	mm
The average particle size	1.0	mm
The average particle size	3.0	mm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

simple method
design science

Oil and gas field oil sludge anaerobic cracking product carbonaceous carbon-based fertilizer and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

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Example Embodiment

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Description & Claims & Application Information

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