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In the production process of the generator, although the load changes little, it is continuous operation for a long time. With the increase in the use of time, the working conditions inside and outside the equipment will continue to deteriorate. As a result, wear will inevitably increase, performance will deteriorate, and consumption will increase. If you continue to use it, it will not only affect work efficiency, but also cause more serious equipment or personal accidents. To this end, it is necessary to strengthen technical maintenance of the equipment so that the equipment can maintain a good condition.
(1) It is always kept in good condition so that it can be started at any time;
(2) Under the conditions of reasonable use, strictly follow the technical operating procedures, and repair the problems in time, so as to stop production due to mid-way damage to the parts;
(3) The operator must be trained and operated in accordance with the chapter;
(4) The technical status of each auxiliary device and the components and parts of the equipment shall be balanced to achieve the highest overhaul interval;
Fault handling timeliness and reliability After the chlorine dioxide disinfectant generator is installed and debugged on the spot, the points that are more prone to failure are:
(1) The metering pump is inaccurate due to vibration during transportation;
(2) Due to impurities in the raw water solution of the metering pump, 4 sets of one-way valves of the metering pump inlet and outlet are blocked or the back pressure valve is blocked, so that the feeding of the two kinds of raw materials is not uniform, the reaction is not sufficient, and the yield of chlorine dioxide is low. High disinfection costs;
(3) The reactor head is not aerated due to unreasonable matching or leakage of the additive pipeline;
(4) Frequent pressure drop of safety valve due to insufficient pressure of power source;
(5) Due to impurities in the power water, the ejector is blocked, the aeration in the reactor is insufficient, chlorine dioxide cannot be drawn out in time, and the safety valve frequently beats;
(6) The voltage fluctuation range of the power supply system is wide, causing the metering pump to be burned;
(7) When the metering pump is restarted, no air is expelled from the pump body, resulting in cavitation or damage to the diaphragm at the pump head and damaging the pump head;
(8) The acidity of hydrochloric acid procured on the market is insufficient, and the national standard for industrial synthetic hydrochloric acid production is ≥31%, and some local acidity is <24%. More serious is the use of used waste acid as industrial synthetic hydrochloric acid. The occurrence of many things caused the equipment to be scrapped. Later, we allocated a hydrochloric acid densitometer to each user to reduce the occurrence of similar accidents;
(9) When nacl2 is dissolved in water, it is not prepared in a ratio of 1:2. Some water flow meters can't read it clearly, so the raw materials can't fully react in the reactor, the yield drops, and the cost of dosing increases;
(10) Due to the low quality of electronic equipment, failures such as the reactor liquid level, the water jacket heater level, and the lower limit of the raw material tank level are not alarmed.
The original cooking characteristics required for the generator and storage transport considerations nacl2
Properties: colorless cubic crystal or tripartite crystal or white powder. Salty and cool. Density 2.490g/cm3. 255 ° C melting point. Soluble in water, 0 ° C in water solubility of 790g / L. Soluble in ethanol, glycerol, acetone, liquid ammonia. Heating to more than 300 ° C easy to release oxygen. The oxidizing power is very low in a neutral or slightly alkaline solution, but it is a strong oxidizing agent in an acidic solution or in the presence of an induced oxidizing agent and a catalyst such as copper sulfate. Chlorine dioxide is released by the action of acids such as sulfuric acid. Has a strong oxidizing power. Mixed with sulfur, phosphorus and organic matter or impacted, it can easily cause combustion and explosion. Easy to deliquescence.
Operation: Nacl2 dust can irritate the skin, mucous membranes and eyes. If accidentally splashed into the eye or splashed on the skin, wash immediately with plenty of water. Inhalation of nacl2 dust, due to accumulation in the body caused by poisoning, there will be nausea, a lot of vomiting, diarrhea, difficulty breathing, kidney damage and other symptoms. When eating, please immediately drink salt water or warm soapy water to spit it out, and then quickly send it to the hospital for treatment. Lethal dose 10g. When working, the production staff should wear overalls, wear protective masks, latex gloves, plastic or rubber aprons, wear long-term rubber boots and other labor protection products to protect the respiratory and skin. The production equipment should be sealed and the workshop ventilation should be good. Take a shower after work.
The packaging and storage are packed in iron drums lined with polyethylene bags. Should be stored in a cool, ventilated, dry warehouse. Pay attention to moisture. Prevent the powder from scattering on the ground. If it is scattered, it must be immediately cleaned with wet yellow sand. Must not be stored or transported together with organic materials such as sugar, oil, charcoal, sulfur, red phosphorus, reducing agents, nitrates, acids (especially sulfuric acid) and all flammable substances. Avoid rain and sun during transportation and pay attention to moisture protection. Handle with care when loading and unloading to prevent friction and never hit. In the event of fire, sand, water and various fire extinguishers are used to fight the fire but high-pressure water is not available.
Nacl2
Properties: Solid sub-nacl2 is white or slightly yellowish-green crystal or crystalline powder with a molecular weight of 90.44. It is alkaline and slightly absorbs moisture. It is easily soluble in water and alcohol. The solid sub-nacl2 is stable at room temperature and under normal storage conditions. It is easy to separate and release chlorine dioxide gas in case of acid; it easily explodes or burns when it comes into contact with wood chips, organic matter, reducing substances, and when it collides with it. The liquid sub-nacl2 is a pale yellow solution that is stable under alkaline conditions and releases chlorine dioxide gas in an acidic state.
Operation: Dust can irritate skin, mucous membranes and eyes. If accidentally splashed into the eye or splashed on the skin, wash immediately with plenty of water. Inhalation of nacl2 dust, due to accumulation in the body caused by poisoning, there will be nausea, a lot of vomiting, diarrhea, difficulty breathing, kidney damage and other symptoms. The sub-nacl2 has a strong bleaching ability, which is 5 times that of bleaching. When working, the production staff should wear overalls, wear protective masks, latex gloves, plastic or rubber aprons, wear long-term rubber boots and other labor protection products to protect the respiratory and skin. The production equipment should be sealed and the workshop ventilation should be good. Take a shower after work.
Packing, Storage and Transportation: Sub-nacl2 solids are packed in iron drums lined with plastic bags, and liquids are packed in polyvinyl chloride plastic drums. Sub-nacl2 must not be mixed with flammables, acids, and reducing substances. It should be stored in a cool, dry warehouse, away from fire and heat sources. Avoid moisture, heat and direct sunlight while transporting.
Chlorine dioxide generator maintenance methods and troubleshooting
After the installation and commissioning of the chlorine dioxide generator is completed, it must be determined on time whether the residual chlorine content of the water and the chlorite content meet the national standards, so as to ensure that the quality of the effluent water reaches the standard. The Ministry of Construction issued a new "City Water Supply Quality Standard" that stipulates the ClO2 disinfection standard: After leaving the water for 30 minutes in contact with water, the residual chlorine dioxide in the factory water will be ≥ 0.1 (mg/L), and the water at the end of the pipe network ≥ 0.02 (mg /L).