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Production method and device of needle coke

A production method and needle coke technology are applied in the field of carbon materials to achieve the effect of wide application field and low cost

Pending Publication Date: 2018-06-29
亚通石化集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still difficult to make the prepared needle coke meet the quality index requirements of high-quality needle coke by means of adsorption for raw material pretreatment

Method used

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  • Production method and device of needle coke
  • Production method and device of needle coke
  • Production method and device of needle coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment provides a needle coke production device, such as figure 1 As shown, it at least includes: clarified oil buffer tank 1, raw material pump 2, raw material steam heater 3, heating furnace 4, fuel gas liquid separation tank 5, coke tower 6, oil rejection tank 7, oil rejection pump 8, heat exchange condensing Tower 9, radiation feed pump 10, wax oil pump 11, wax oil evaporator 12, steam drum 13, wax oil cooler 14, circulation pump 15, oil slurry-combined oil heat exchanger 16, raw material pretreatment system 17 ;

[0071] The quantity of described coke drum 6 is two;

[0072] The clarified oil buffer tank 1 is connected to the clarified oil inlet of the convection chamber of the heating furnace 4 through a pipeline, and a raw material pump 2 and a raw material steam heater 3 are arranged on the pipeline, and the clarification of the convective chamber of the heating furnace 4 The oil outlet is connected to the two clarified oil inlets of the evaporation s...

Embodiment 2

[0087] This embodiment provides a method for producing needle coke, which uses the device provided in Embodiment 1, and the method at least includes the following steps:

[0088] Make the oil slurry (the oil slurry is the oil slurry after heat exchange with the combined oil at the bottom of the heat exchange condensation tower 9) pass through the filter 18 in the raw material pretreatment system 17 to filter, and pass through the high-voltage lead wire 185 in the filter 18 at the same time Introduce a voltage of 35,000 to 40,000 volts to form an electromagnetic field "column" in the filter 18 to absorb impurities in the oil slurry to obtain clarified oil, which enters the clarified oil buffer tank 1, and the oil slurry is processed by the raw material pretreatment system 17 before and after pressure The difference is less than 0.45MPa; and the used filter 18 is cleaned with backwash oil, so that the backwash oil enters the used filter 18 through the backwash oil inlet for clean...

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Abstract

The invention provides a production method and device of needle coke. The production method comprises the following steps: clarified oil enters an evaporation section of a heat exchange condensation tower through a convection chamber of a heating furnace, oil and gas overflowing from the top of coke towers enters the evaporation section of the heat exchange condensation tower, the clarified oil exchanges heat with the oil and gas from the coke tower, components below wax oil in the clarified oil and circulating oil condensed from the oil and gas form combined oil; the combined oil enters one coke tower for coke generation through a four-way valve after being heated by a radiation chamber of the heating furnace, and the two coke towers are used for coke generation in turn; wax oil circulation is established in the heat exchange condensation tower, and part of the wax oil is pumped out. The device at least comprises a clarifying oil buffer tank, a raw material pump, the heating furnace,the coke towers, the heat exchange condensation tower, a radiation feeding pump, a wax oil pump, a wax oil evaporator and a wax oil cooler. The provided production method and device of the needle cokecan produce the high-quality needle coke, and have the advantages that process flow is simple, operability is high, industrial production is facilitated and the like.

Description

technical field [0001] The invention relates to a needle coke production method and device, belonging to the technical field of carbon materials. Background technique [0002] High-quality needle coke products are high-quality materials for manufacturing high-power and ultra-high-power electrodes. Needle coke is divided into petroleum series and coal series according to the raw materials used. The former is represented by the United States, and the latter is represented by Japan. The quality of China's oil-based coke and coal-based coke cannot meet the quality requirements of high-quality needle coke, and the low output cannot meet the market supply. The existing domestic oil-based coke process has high production costs, and there is no raw material pretreatment system technology. The raw material properties are highly volatile and unstable, and it is difficult to meet the quality index requirements of high-quality needle coke, which seriously affects product quality and re...

Claims

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Application Information

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IPC IPC(8): C10G57/00
CPCC10G57/00
Inventor 李杰贾相国
Owner 亚通石化集团有限公司
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