CN103468333B - Burnt slurry of a kind of oily sludge water and preparation method thereof - Google Patents

Abstract

The present invention relates to burnt slurry of a kind of oily sludge water and preparation method thereof；In terms of quality 100%, it is made up of following each component：Petroleum coke 50% ~ 75%；Oily sludge 0.1% ~ 15%；Dispersant 0.001% ~ 1%；Oily sludge improved chemical 0% ~ 1%；Balance of water；Dispersant is one or more mixture of substances in naphthalenesulfonate, polycarboxylic acid salt, humic-acid kind or lignin sulfonate surfactant；Oily sludge improved chemical is the metal ion inorganic salts of the iron, aluminium or calcium of divalence or trivalent；Oily sludge is oil, the aqueous mixtures that crude oil is formed in exploitation, transport, process；The burnt slurry of oily sludge water prepared by this method has calorific value high, mobility and good stability, it is easy to store, convey with atomization, can be as burning or gasified raw material, with scale application prospect.

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 concentration, high stability oily sludge, petroleum coke mixture slurry and preparation method thereof, specifically It is related to burnt slurry of a kind of high stability oily sludge water and preparation method thereof.

Background technology

Petroleum coke is the accessory substance that petroleum refining enterprise delayed coking unit is, physical aspect and coal in production light-end products It is similar.Oil coke content is high, calorific value is high, volatile matter is low, and property is close with anthracite.Its low heat valve is about common motive power 1.5~2 times of coal.But the shortcoming of water Jiao's slurrying existence and stability difference, needs to increase using addition stabilization agent method in production process Water burnt slurry stabilization time.The use of stabilizer can not only increase the burnt slurry slurrying cost of water, and slurry apparent viscosity can be made to increase, drop Low petroleum coke slurry concentration and the economy for using.And the burnt slurry of water is readily formed dilatant fluid, this and preferable slurry fuel Yield pseudoplasticity slurry performance it is opposite.Again because volatile fraction in petroleum coke is low, activity is poor, it is more difficult to igniting and burning, gasification profit With inefficient.

Crude oil can produce substantial amounts of oily sludge in exploitation, transport, process.This sludge yield is big, oil-containing Amount is high, heavy oil ingredient is high, and also containing the stench such as substantial amounts of benzene homologues, phenols, anthracene, pyrene noxious material and heavy metal, It was put into 1 day July in 1998《National Hazard waste register》, belong to poisonous, combustible waste.Oily sludge is processed both at home and abroad Method mainly has：Solvent extraction, biological treatment, burn etc..Because often oils emulsification is abundant in oily sludge, it is difficult to realize Oil-water is efficiently separated.And oily sludge moisture is high cannot support spontaneous combustion, and the oily sludge discharge capacity is caused to increase, Processing cost rises.Current oily sludge there is no safe and reliable, the efficient process method that efficiency earning is taken into account, and be that petrochemical industry is needed badly The a great problem of solution.

The content of the invention

It is an object of the invention to provide burnt slurry of a kind of oily sludge water and preparation method thereof, propose oily sludge and oil Jiao is mixed with the burnt slurry of oily sludge water.After adding oily sludge, water slurry stability is significantly improved, and can fully meet production needs Will.The process can make full use of moisture, the heat in oily sludge simultaneously.The organic matter such as light hydrocarbons can increase in oily sludge Volatile matter in fuel slurry, with calorific value, makes up the water low shortcoming for being difficult to burning and gasification of burnt slurry volatile matter.The sludge water of preparation Jiao's slurry is pumpable, and is easy to be atomized, stores and burnt and gasification with stable ignition.Do not reducing the base of the burnt slurry combustible component concentration of water On plinth, the stability of the burnt slurry of water is increased substantially.Simultaneously directly using the energy in oily sludge, realize petroleum coke resource and The efficient utilization of oily sludge.

The burnt slurry of oily sludge water of the present invention, is grouped into terms of quality 100% by lower each group：

Petroleum coke 50%~75%；Oily sludge 0.1%~15%；Dispersant 0.001%~1%；Oily sludge is modified Medicament 0%~1%；Balance of water.

Described petroleum coke is the high carbon containing solid byproducts of formation after PETROLEUM PROCESSING.

Described oily sludge is oil, the aqueous mixtures of the arbitrary proportion mixing of formation in industrial processes, wherein also May be containing emulsifying agent, solid particle, inorganic salts in one or more interior.

The burnt slurry dispersant of described oily sludge water is naphthalenesulfonate, polycarboxylic acid salt, humic-acid kind or sulfomethylated lignin One or more mixture of substances in Barbiturates surfactant.

The oily sludge modifying agent is divalence, the inorganic salts of trivalent metal ion such as iron, aluminium, calcium.

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

A. oily sludge is mixed and is diluted with water with oily sludge improved chemical, prepares modified oily sludge mixing Liquid；

B. the modified oily sludge mixed liquor for preparing petroleum coke, dispersant and step a grinds in adding grinding machine, makes solid Grain diameter≤0.5mm is so as to obtain the burnt slurry of the oily sludge water.

From technical scheme disclosed above, the present invention prepares the burnt slurry of oily sludge water using oily sludge, petroleum coke, Take full advantage of moisture, the heat in sludge.The present invention is simple to operate, and power consumption is few, and low cost, the secondary pollution of generation is few.Should Preparation method has the advantages that the rheological characteristic and stability that improve the burnt slurry of water.The burnt slurry of obtained water is ps eudo-plastic fluid with yield stress, long Time places will not produce hard precipitation, and good fluidity, be adapted to pumping, can be as fuel combustion or gasified raw material.

The burnt slurry of oily sludge water of the invention, not only combustible component is high, and it is burnt to improve the volatile matter raising water of the burnt slurry of water The combustibility of slurry.The components such as a large amount of iron, the nickel that contain in oily sludge, can improve the reactivity of petroleum coke, so as to improve The utilization ratio of petroleum coke.

The burnt slurry of high concentration oily sludge water prepared by the present invention can be as fuel combustion, or gasified raw material.It is not only abundant Using the calorific value in oily sludge, and also overcome the shortcoming that oily sludge moisture is high, heat treatment power consumption is high.Made by high temperature With poisonous, harmful organic contaminants in effectively destruction oily sludge, the disadvantage of the poisonous tail gas of customer service existing process and discharge of wastewater End, obtains economy and environment double benefit.

Brief description of the drawings

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

Specific embodiment

Embodiment 1

1. raw material

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

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

(3) dispersant（Naphthalenesulfonic acid-formaldehyde condensate）；

(4) sludge modification medicament（Ferric sulfate）；

(5) water.

2. preparation condition

(1) raw material proportioning（Mass percent）

Petroleum coke 67.65%, oily sludge 3.38%, 28.53% part of water, 0.34% part of dispersant, sludge modification medicament 0.1% part.

(2) preparation method

Oily sludge is mixed with sludge modification medicament first, and is stirred, obtain modified sewage sludge.By petroleum coke, water And dispersant ground and mixed, obtain the burnt slurry of water.

3. product performance index

1. face shaping：Black slurry.At 25 DEG C, apparent viscosity is 1099mPas, there is good

Good mobility, it is pumpable；

2. solid holdup (quality %)：69%；

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

4. stability：Soft precipitation is occurred without within 8 days, hard precipitation is occurred without within 12 days.

Embodiment 2

1. raw material

With embodiment 1

2. preparation condition

(1) raw material proportioning（Mass percent）

Petroleum coke 65.39%, oily sludge 6.54%, 27.54% part of water, 0.33% part of dispersant, sludge modification medicament 0.20% part.

(2) preparation method

With embodiment 1

3. product performance index

1. face shaping：Black slurry.At 25 DEG C, apparent viscosity is 1063mPas, there is good mobility, pumpable Send；

2. solid holdup (quality %)：68%；

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

4. stability：Occur without within 15 days hard precipitation.

Claims (1)

1. a kind of oily sludge water is burnt starches, it is characterised in that：In terms of quality 100%, it is made up of following each component：Petroleum coke 67.65%；Oily sludge 3.38%；Dispersant 0.34%；Oily sludge improved chemical 0.1%；Balance of water；Resulting contains The solid content of the burnt slurry of greasy dirt muddy water is 69%；Or,

In terms of quality 100%, it is made up of following each component：Petroleum coke 65.39%；Oily sludge 6.54%；Dispersant 0.33%； Oily sludge improved chemical 0.2%；Balance of water；The solid content of the burnt slurry of resulting oily sludge water is 68%；

Wherein,

Described dispersant is naphthalenesulfonic acid-formaldehyde condensate；

Described oily sludge improved chemical is ferric sulfate；

The oily sludge is oil, the aqueous mixtures that crude oil is formed in exploitation, transport, process, or also includes emulsification , in one or more interior, its water content is 59.9% for agent, solid particle, inorganic salts；

The sulfur content of the petroleum coke is 4.88%, and ash content is 0.15%；

The burnt slurry of described oily sludge water is prepared via a method which to obtain：

A. oily sludge is mixed and is diluted with water with oily sludge improved chemical, prepares modified oily sludge mixed liquor；

B. will petroleum coke, dispersant and modified oily sludge mixed liquor add grinding machine in grind, make solid grain size≤ 0.5mm。