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Oily sludge coke water slurry and preparation method thereof

A sludge water and coke slurry technology is applied in petroleum coke mixed slurry and its preparation, high stability oily sludge, and high concentration fields. Reliable, difficult to effectively separate oil and water, etc., to achieve the effect of improving rheology and stability, low cost, and high flammable components

Active Publication Date: 2013-12-25
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the oil in oily sludge is often fully emulsified, it is difficult to achieve effective oil-water separation
Moreover, the high moisture content of oily sludge cannot support spontaneous combustion, which leads to an increase in the discharge of oily sludge and an increase in treatment costs
At present, there is no safe, reliable and efficient treatment method for oily sludge, which is a major problem that the petrochemical industry needs to solve urgently.

Method used

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  • Oily sludge coke water slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Raw materials

[0020] (1) The oily sludge of a refinery has a water content of 59.9wt%;

[0021] (2) Petroleum coke from a refinery, with a sulfur content of 4.88wt% and an ash content of 0.15wt%;

[0022] (3) Dispersant (sodium naphthalenesulfonate formaldehyde condensate);

[0023] (4) Sludge modifier (ferric sulfate);

[0024] (5) water.

[0025] 2. Preparation conditions

[0026] (1) Raw material ratio (mass percentage)

[0027] Petroleum coke 67.65%, oily sludge 3.38%, water 28.53%, dispersant 0.34%, sludge modifier 0.1%.

[0028] (2) Preparation method

[0029] Firstly, the oily sludge and the sludge modifying agent are mixed and stirred evenly to obtain the modified sludge. Grinding and mixing petroleum coke, water and dispersant to obtain water coke slurry.

[0030] 3. Product performance indicators

[0031] ① Appearance shape: black paste. At 25°C, the apparent viscosity is 1099mPa·s, which is good

[0032] Good fluidity, pumpable;

[0033] ②Sol...

Embodiment 2

[0037] 1. Raw materials

[0038] Same as Example 1

[0039] 2. Preparation conditions

[0040] (1) Raw material ratio (mass percentage)

[0041] 65.39% of petroleum coke, 6.54% of oily sludge, 27.54% of water, 0.33% of dispersant, and 0.20% of sludge modifier.

[0042] (2) Preparation method

[0043] Same as Example 1

[0044] 3. Product performance indicators

[0045] ① Appearance shape: black paste. At 25°C, the apparent viscosity is 1063mPa·s, which has good fluidity and can be pumped;

[0046] ②Solid content (mass%): 68%;

[0047] ③The size of solid particles in the slurry: less than 500 microns;

[0048] ④ Stability: no hard precipitation occurs within 15 days.

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Abstract

The invention relates to oily sludge coke water slurry and a preparation method thereof. The oily sludge coke water slurry comprises the following components: by mass percent, 50%-75% of petroleum coke, 0.1%-15% of oily sludge, 0.001%-1% of a dispersant, 0%-1% of an oily sludge modifying agent and the balance of water; wherein the dispersant is a mixture of one or a plurality of substances comprising surfactants of naphthalene sulfonates, polycarboxylates, humic acids or lignosulfonates, the oily sludge modifying agent is inorganic salts of divalent or trivalent iron, aluminum or calcium metal ions, and the oily sludge is an oil and water mixture produced in mining, transportation and processing processes of crude oil; and the oily sludge coke water slurry prepared by the preparation method has the advantages of high calorific value and good liquidity and stability, is easy to store, transport and atomize, can be used as combustion or gasification raw materials and has large-scale application prospects.

Description

technical field [0001] The invention relates to a high-concentration, high-stability oily sludge and petroleum coke mixed slurry and a preparation method thereof, in particular to a high-stability oily sludge water-coke slurry and a preparation method thereof. Background technique [0002] Petroleum coke is a by-product of the delayed coking unit of petroleum refining and chemical enterprises in the production of light oil products, and its physical form is similar to coal. Petroleum coke has high carbon content, high calorific value, and low volatile matter, and its properties are similar to anthracite coal. Its low calorific value is about 1.5 to 2 times that of ordinary steam coal. However, hydrocoke pulping has the disadvantage of poor stability, and it is necessary to increase the stability time of hydrocoke pulp by adding a stabilizer during the production process. The use of stabilizers will not only increase the cost of making water coke slurry, but also increase t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32
Inventor 刘海峰付兴国刘银东代正华李伟锋高飞许建良张艳梅王辅臣于广锁王亦飞龚欣郭晓镭郭庆华陈雪莉周志杰王兴军张强
Owner PETROCHINA CO LTD
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