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System and method for incinerating oil sludge by utilizing pulverized coal fired boiler of power station

A pulverized coal boiler and oil sludge technology, which is applied in the field of coal-fired boilers, achieves the effects of high thermal efficiency, saving infrastructure equipment and operation and maintenance costs, and high incineration temperature

Pending Publication Date: 2021-12-21
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

However, oil sludge has physical and chemical properties that are very different from raw coal. How to embed the transportation and combustion control of oil sludge in the existing pulverized coal power plant boiler system to form a system and method that can solve the problem of burning oil sludge in power plant pulverized coal boilers, especially Whether or not the existing boiler system can meet the incineration needs of oil sludge is also an important subject that needs to be studied urgently.

Method used

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  • System and method for incinerating oil sludge by utilizing pulverized coal fired boiler of power station
  • System and method for incinerating oil sludge by utilizing pulverized coal fired boiler of power station
  • System and method for incinerating oil sludge by utilizing pulverized coal fired boiler of power station

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[0036] Such as image 3 The oil sludge as a by-product of an oil production well is composed of 60% oil, 8% water, 7% solid combustibles, and about 25% other non-combustible substances such as ash, with a calorific value as high as 33MJ / kg. Due to the high oil content of this sludge, it has the characteristics of high calorific value. However, due to its large molecular weight of oil, the viscosity of the oil on the whole is high, and transportation is difficult and poses a greater safety risk. On the other hand, moisture and non-combustible substances also contain certain toxic and harmful substances, which need to be harmlessly treated at high temperatures. By adopting the method of the present invention, the following steps can be adopted for incineration, so as to realize the comprehensive utilization of the calorific value of the oil sludge and the harmless treatment of harmful substances.

[0037] First, as mentioned above, the main physical and chemical indicators of t...

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Abstract

The invention discloses a system and method for incinerating oil sludge by utilizing a pulverized coal fired boiler of a power station. The system comprises a boiler, an air preheater, an air feeder, a primary air fan, a flue gas purification device, a coal mill, a separator, a combustion system, a coal bunker, a coal conveying belt, a spiral stirrer and a mixer feed port, According to the method, under the condition that a middle oil sludge incineration device is not arranged, oil sludge is subjected to certain pretreatment and then directly mixed with raw coal, the mixture is smashed through an existing coal pulverizing system of the boiler and conveyed into a hearth of the boiler to be incinerated, and then purification is conducted through an existing flue gas purification device of the boiler, so that the utilization and harmless treatment of the oil sludge are realized.

Description

technical field [0001] The invention belongs to the technical field of coal-fired boilers, and in particular relates to a system and method for incinerating oil sludge using a power station pulverized coal boiler. Background technique [0002] Oil sludge is one of the main solid wastes generated during the exploitation, transportation and utilization of petroleum and biomass oil. Since oil sludge is a hazardous waste with stable structure and difficult to handle, it cannot be disposed of by simple landfill method like traditional waste. Existing oil sludge treatment technologies mainly include: incineration, centrifugal separation, solvent extraction, and biological methods, among which incineration is the lowest cost and most widely used method. The traditional oil sludge incineration treatment is mainly carried out by establishing a dedicated incinerator separately. On the one hand, with the increasingly stringent environmental protection regulations, the difficulty of in...

Claims

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Application Information

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IPC IPC(8): F23G7/00F23G5/08F23G5/44F23G5/50F23K1/00F23J15/02F23L15/00F23L9/00B01F7/08
CPCF23G7/00F23G5/08F23G5/44F23G5/50F23K1/00F23J15/02F23L15/00F23L9/00Y02E20/34
Inventor 汪华剑马翔邓玲恵王洋房凡吴庆龙陈煜徐党旗刘笑周军
Owner XIAN THERMAL POWER RES INST CO LTD
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