CN103468333A - Oily sludge coke water slurry and preparation method thereof - Google Patents

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

Burnt slurry of a kind of oily sludge water and preparation method thereof

Technical field

The present invention relates to a kind of high density, high stability oily sludge, refinery coke mixture slurry and preparation method thereof, be specifically related to burnt slurry of a kind of high stability oily sludge water and preparation method thereof.

Background technology

Refinery coke is by products that oil refining enterprise delayed coking unit is at the production light-end products, and physical aspect and coal facies are seemingly.The refinery coke carbon content is high, calorific value is high, volatile matter is low, and character and hard coal are close.Its net calorific value is about 1.5～2 times of common steam coal.But the poor shortcoming of water Jiao's slurrying existence and stability, need to adopt interpolation stablizer method to increase water Jiao and starch steady time in production process.The use of stablizer not only can increase the burnt slurry of water slurrying cost, and can make the slurry apparent viscosity increase, and reduces the economy of refinery coke slurry concentration and use.And the burnt slurry of water is easy to form dilatant fluid, this yield pseudoplasticity slurry performance with desirable slurry state fuel is opposing.Again because volatile fraction in petroleum coke is low, active poor, not high than difficult point fire and burning, gasification utilising efficiency.

Crude oil all can produce a large amount of oily sludges in exploitation, transportation, the course of processing.This sludge yield is large, oleaginousness is high, the mink cell focus component is high, and contain stench toxic substance and the heavy metals such as a large amount of benzene homologues, phenols, anthracene, pyrene, in 1 day July in 1998, be put into " national Hazardous Waste List ", belonged to poisonous, combustible waste.The method of processing oily sludge both at home and abroad mainly contains: solvent extraction, biological treatment, burn etc.Because in oily sludge, often oils emulsification is abundant, be difficult to realize effective separation of oil-water.And the oily sludge moisture content is high can't support spontaneous combustion, and cause the oily sludge quantity discharged to increase, processing cost rises.Current oily sludge there is no safe and reliable, and the efficient facture that efficiency earning is taken into account, be a great problem that petrochemical industry is needed solution badly.

Summary of the invention

The purpose of this invention is to provide burnt slurry of a kind of oily sludge water and preparation method thereof, propose oily sludge and refinery coke are mixed with to the burnt slurry of oily sludge water.After adding oily sludge, water slurry stability significantly improves, and can meet need of production fully.This process can take full advantage of moisture, the heat in oily sludge simultaneously.In oily sludge, the organism such as light hydrocarbons can increase the volatile matter in fuel slurry, with calorific value, makes up the low shortcoming that is difficult to burning and gasification of the burnt slurry of water volatile matter.But the pumping of the burnt slurry of the sludge water of preparation, and be easy to atomization, storage and stable ignition burning and gasification.On the basis that does not reduce the burnt slurry of water combustibleconstituents concentration, increase substantially the stability of the burnt slurry of water.Directly utilize the energy in oily sludge, realize the efficient utilization of refinery coke resource and oily sludge simultaneously.

The burnt slurry of oily sludge water of the present invention is comprised of lower each component in quality 100%:

Refinery coke 50%～75%; Oily sludge 0.1%～15%; Dispersion agent 0.001%～1%; Oily sludge improved chemical 0%～1%; Surplus is water.

Described refinery coke is the high carbon containing solid byproducts formed after refining of petroleum.

Described oily sludge is oil, the water mixture that the arbitrary proportion that forms in Industrial processes mixes, and wherein also may contain emulsifying agent, solid particulate, inorganic salt in interior one or more.

The burnt slurry of described oily sludge water dispersion agent is one or more substance mixture in naphthalenesulfonate, polycarboxylic acid salt, humic-acid kind or lignin sulfonate tensio-active agent.

The inorganic salt that described oily sludge properties-correcting agent is the divalence such as iron, aluminium, calcium, trivalent metal ion.

The preparation method of the burnt slurry of oily sludge water of the present invention comprises the following steps:

A. oily sludge and oily sludge improved chemical mix and blend thin up, prepare modification oily sludge mixed solution;

B. the modification oily sludge mixed solution prepared by refinery coke, dispersion agent and step a adds in grinding machine and grinds, thereby makes solid grain size≤0.5mm obtain the burnt slurry of described oily sludge water.

From above-mentioned disclosed technical scheme, the present invention utilizes oily sludge, refinery coke to prepare the burnt slurry of oily sludge water, takes full advantage of moisture, heat in mud.The present invention is simple to operate, and power consumption is few, and cost is low, and the secondary pollution of generation is few.This preparation method has advantages of rheological and the stability of improving the burnt slurry of water.The burnt slurry of the water that obtains be the yield pseudoplasticity fluid, long-time placement can not produce hard-caked sediment, and good fluidity, is applicable to pumping, can be used as fuel combustion or gasified raw material.

The burnt slurry of oily sludge water of the present invention, not only combustibleconstituents is high, and can improve the combustibility of the burnt slurry of volatile matter raising water of the burnt slurry of water.The components such as a large amount of iron that contain in oily sludge, nickel, can improve the reactive behavior of refinery coke, thereby improve the utilising efficiency of refinery coke.

The burnt slurry of high density oily sludge water prepared by the present invention can be used as fuel combustion or gasified raw material.Not only take full advantage of the calorific value in oily sludge, but also overcome, oily sludge moisture is high, high shortcoming is consumed energy in thermal treatment.Effectively destroy poisonous, the harmful organic pollutant in oily sludge by high temperature action, the drawback of the existing poisonous tail gas of technique of customer service and discharge of wastewater, obtain economy and environment double benefit.

The accompanying drawing explanation

Fig. 1 is the process flow diagram that the present invention prepares the burnt slurry of oily sludge water

Embodiment

Embodiment 1

1. raw material

(1) certain refinery oily sludge, water content is 59.9wt%;

(2) certain From Petrol Coke In Refining Factory, sulphur content is 4.88wt%, ash content is 0.15wt%;

(3) dispersion agent (naphthalenesulfonic acid-formaldehyde condensate);

(4) sludge modification medicament (ferric sulfate);

(5) water.

2. preparation condition

(1) proportioning raw materials (mass percent)

Refinery coke 67.65%, oily sludge 3.38%, 28.53% part, water, 0.34% part of dispersion agent, 0.1% part of sludge modification medicament.

(2) preparation method

At first oily sludge is mixed with the sludge modification medicament, and stir, obtain modified sewage sludge.By refinery coke, water and dispersion agent ground and mixed, obtain the burnt slurry of water.

3. product performance index

1. face shaping: black slurry.Under 25 ℃, apparent viscosity is 1099mPas, has good

Good mobility, but pumping;

2. solid holdup (quality %): 69%;

3. solid grain size in slurry: be less than 500 microns;

4. stability: do not occur soft precipitation in 8 days, do not occur hard-caked sediment in 12 days.

Embodiment 2

1. raw material

With embodiment 1

2. preparation condition

(1) proportioning raw materials (mass percent)

Refinery coke 65.39%, oily sludge 6.54%, 27.54% part, water, 0.33% part of dispersion agent, 0.20% part of sludge modification medicament.

(2) preparation method

With embodiment 1

3. product performance index

1. face shaping: black slurry.Under 25 ℃, apparent viscosity is 1063mPas, and good mobility is arranged, but pumping;

2. solid holdup (quality %): 68%;

3. solid grain size in slurry: be less than 500 microns;

4. stability: do not occur hard-caked sediment in 15 days.

Claims (3)

1. the burnt slurry of oily sludge water, is characterized in that: in quality 100%, following each component, consist of: refinery coke 50% ~ 75%; Oily sludge 0.1% ~ 15%; Dispersion agent 0.001% ~ 1%; Oily sludge improved chemical 0% ~ 1%; Surplus is water;

Described dispersion agent is one or more substance mixture in naphthalenesulfonate, polycarboxylic acid salt, humic-acid kind or lignin sulfonate tensio-active agent;

The inorganic salts of the metal ion of iron, aluminium or calcium that described oily sludge properties-correcting agent is divalence or trivalent.

2. oily sludge water according to claim 1 is burnt starches, it is characterized in that: described oily sludge is oil, the water mixture that crude oil forms in exploitation, transportation, the course of processing, or also includes emulsifying agent, solid particulate, inorganic salt in interior one or more.

3. the preparation method of the burnt slurry of oily sludge water claimed in claim 1 is characterized in that:

A. oily sludge and oily sludge improved chemical mix and blend thin up, prepare modification oily sludge mixed solution;

B. refinery coke, dispersion agent and modification oily sludge mixed solution are added in grinding machine and grind, make solid grain size≤0.5mm.

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