Enclosed petroleum coke dehydration degassing transportation system and method

Abstract

The invention discloses an enclosed petroleum coke dehydration degassing transportation system and method. The system includes: a coke slide tank, a vibration screening machine, a crusher, a water filter tank, a pipe type conveyor, a water distribution bin, a vibrating feeder, a coke cut water lift pump, a coke cut water filter and a tail gas treatment unit. The coke slide tank is a tubular structure, one end is connected to the bottom outlet of a coke tower, and the other end is connected to the vibration screening machine and the crusher in order. The crusher outlet is connected to the top of the water filter tank, the water filter tank bottom is provided with the pipe type conveyor, and the other end of the pipe type conveyor is connected to the upper part of the water distribution bin. The middle part of the water filter tank is connected to the coke cut water lift pump and the coke cut water filter in order, and the coke cut water filter bottom is connected to the upper part of the water filter tank. The coke slide tank, the vibration screening machine, the water filter tank and the water distribution bin are respectively equipped with a pipeline in connection with the tail gas treatment unit. The whole system is an enclosed structure, realizes a decoking process free of dust, harmful gas and waste residue, reduces environmental pollution, improves the automation level, and lowers the labor intensity.

Description

Technical field [0001] The invention relates to the field of coke treatment in a delayed coking unit, and more particularly to a closed type petroleum coke dehydration and degassing transfer system and method. Background technique [0002] Delayed coking is the main processing method of inferior heavy oil in refineries. As a process of continuous production and intermittent operation, there are generally at least two coking towers. When one coking tower is in online coking production, the other coking tower performs decoking. For related operations, the two coke towers alternate coking and decoking operations. During the coke cutting process of the coke tower, the coke cutting water is pumped by the high-pressure water pump from the coke cutting water storage tank to the top of the coke tower, and then enters the coke tower through the drill pipe and the coke cutter to cut the coke. The coke water is discharged from the coke tower into the open coke storage tank. The solid coke ...

AI Technical Summary

Problems solved by technology

During the coke cutting process of the coke tower, the coke cutting water is pumped from the coke cutting water storage tank to the top of the coke tower by the high-pressure water pump, and enters the coke tower through the drill pipe and the coke cutter to cut the coke. The coke water is discharged from the coke tower into the open-air coke storage tank, and the solid coke and coke cutting water are separated in the coke storage tank. After preliminary sedimentation and separation of large particle powder coke, it enters the sedimentation tank to further settle the coke powder, and the coke cut after sedimentation in the sedimentation tank flows into the reservoir, and the coke cut water in the reservoir is sent to the coke cut water storage by the coke cut water lift pump The tank is used for the next high-pressure water pump coke cutting. The existing operation has the following problems: high equipment failure rate and poor reliability; long coke grasping operation time, many positions, and high labor costs; coke is exposed to the open air, and dust spreads randomly; steam Large amount of volatilization, carrying coke powder, suspended solids and sulfide-containing hydrocarbon oil and gas, high concentration, foul smell, causing environmental pollution; operators are exposed to harsh operating environments, and there are hidden dangers of occupational diseases; spilling during shipment is common , destroy the device and the surrounding environment; the water quality of coke cutting is poor, causing blockage and wear of coke removal equipment; coke dehydration is affected by seasons, weather and other conditions, coke moisture content is high, coke output is not easy to measure; the whole set of facilities occupies a large area, civil engineering , high equipment investment costs

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