【 Weak current College 】 oil extraction production of fire management-the Power By 【 China power house network 】

Oil extraction production means used solvent extract oil in oil production. It is a solid mixture: immersion in selected solvents, some of the easy dissolving solution dissolved into, and then use solvents than grease lightly, volatile features for distillation, the most solvent extraction fuel gasification, resulting in oil.
In recent years, oil extraction production in several major cotton-producing regions to develop faster, a lot of cotton processing factory of the oil workshop new on oil extraction process for cotton processing and utilization of opened a new road. Oil extraction process advantages of oil is primarily a high rate of oil, such as pressing method or water generation process oil, biscuits in residual oil generally in 4 percent, and leaching process oil, meal oil residue can be controlled at 0.5 — 1 per cent. And extracting oil after meal, due to temperature is low, good quality, can be widely used in animal feed, fertilizer and food processing industry. However, oil extraction solvents used in the production of mostly with flammable and explosive characteristics of organic solvents in production, equipment pipes produced electrostatic, impact, friction caused by fire and explosion has occurred from time to time. Currently, our province has been completed or are in the construction of oil extraction production projects mostly foreign oil extraction plant technology transfer, in architectural design and installation of production are some problems with the production slightly occurs inadvertently, major fires, so we should strengthen the oil extraction production of fire management. The following interview on oil extraction production of fire-proof technology issues a preliminary discussion on:

First, the workshop building

1. leaching of oil production in the case of a mode of production, the factory of fire-resistance ratings should not be less than level 2, fire resistance of building elements to comply with the national architectural design fire protection norms. Solvent library as category a goods store, fireproof grade level, to be built in underground or half-underground to prevent solvent mixture of powder, or solvent extraction plant library should have not less than 1.5 m solid walls, set the danger signs, draw a closed area.

2. extraction plant should be lightweight roof and doors, relief of area and volume ratios powerhouse (m/m) 0.05 to 0.10, plant more than 1000 cubic meters in volume should not be less than 0.03 when, the workshop Office cannot be located, lounge, laboratories, etc. Workshop and solvent library around there should be no less than 6 meters wide fire channel.

3. extraction plant, solvent library in the General layout, fire distance should not be less than building fire codes required data.

Second, equipment installation

1. the mixed solvent, oil pipeline to connect with welding, pipeline low recess should device venting valve, to exclude the accumulation of solvent or water.

2. extraction plant is equipped with a pipe trench, trenches, to prevent overflow into the waste solvent gases. To non-solvent pipes, steam pipelines and cables installed in the same tunnel.

3. mixed solvent, oil pipeline, if equipped with the glass tube or perspective window, in which both ends of unit valves for glass breakage and closure.

4. extraction plant's equipment on the prohibition of the use of belt drive, which should be in the chain-gear drive and keep the lubricant to prevent sparks.

III. electrical equipment and lightning protection devices

Electrical equipment for electric discharge is solvent vapor ignition and explosion of one of the main reasons, which must meet the following requirements for fire and explosion.

1. extraction plant, meal library, solvent library are Q-2-level explosion hazardous areas and, therefore, the electric motor and electrical switches, instruments, lighting, etc. all electrical facilities to use explosion-proof installation of non-explosion-proof, lighting, power outlet, power clock, phone, Bell, etc.

2. extraction plant power distribution unit, control room from the production site of distance cannot be less than 10 meters.

3. solvent base, extraction plant to have good lightning protection against static electricity installations, their SPD grounding resistance does not exceed 10 Ω, anti-static grounding not greater than 4 Ω; in order to prevent lightning step voltage, the device also from the building's metal components and factory sidewalk not less than 5 m.

4. storage and handling of solvents

1. best use of semi-underground tanks (tank diameter of two-thirds of the underground), solvent base structure with noncombustible material composition, exposing the ground segment must have good heat and cooling appliances, building internal and external to the exhaust pipe to keep the air circulation, storage tank to be equipped with a breathing valve, arrestor; no open storage solution.

2. when handling solvents to a restricted area, around 50 meters without flame. Solvents handling to light move and put to prevent violent vibration, impact, tilting pressure and stress to avoid breakage of solvent leakage and vessel. Irrigation unloading solvents is prohibited from height to the container to prevent spillage of the impact of strong electrostatic charge, solvents in the pipeline that you want to control the flow rate must not exceed 4 metres per second, the means of solvents, to be able to generate static equipment or vehicle installation and reliable grounding device.

5. fire fighting facilities

Extraction plant and solvent library you want to configure a certain number of chemical foam, carbon dioxide, dry chemical extinguisher; also set fire to the fire, not the burning buildings, equipment and containers for water cooling.

6. security operations management

1. in the production process, the operator should always check the transmission equipment lubrication conditions, regularly check the water separator, water discharges of wastewater has a solvent.

2. always check the electrical equipment for sealing and grounding device is good.

3. maintenance equipment in order to avoid that sparks the lang Tau, crowbar, impact tools, wood or copper, ground also laying protective layer, so that tools and parts to impact or friction sparking.

4. parking maintenance, to devices in the stock of clean solvent and meal, and the solvent library and shop connected pipe close, steam equipment within the solvent gases all excluded.

5. dipThe workshop, within 30 m of solvent library cannot by automobiles, tractors, car battery, animal-drawn vehicles, etc., into the extraction plant is strictly forbidden to wear synthetic clothing and shoes with Iron nails, shall not use any form of Flash in the workshop photography.

6. extraction plant to accommodate two more solvent concentration measuring instrument, the most high concentration in the air of solvents is not superior 0.4mg/c, close to the ventilation to be conducted in a timely manner. Extraction plant of measuring instruments (such as gauges, vacuum table) each year to review or a correction.