sauce cooking kettle boiler vessel
A, by definition, i.e. condensing sauce cooking kettle boiler vessel technology is the use of condensation boilers, the waste heat boiler flue gas back again discharged through the condensing means, make full use of the sensible heat in the exhaust gas and condensation of water vapor to form part of the latent heat released drops to increasing the purpose of the thermal efficiency of the boiler.
The problems in steam sauce cooking kettle boiler vessel operation and the start-up of magnetic driven centrifugal pump will encounter many problems, among which the main problems are low temperature corrosion, slow exhaust speed, steam and water supply pipe damage and so on. The low temperature corrosion occurred on the low temperature heating surface of steam boiler has several main points: chemical corrosion and electrochemical corrosion. These two kinds of corrosion occur basically on the wall at lower temperature than the acid dew point. Ash deposition on the heated surface of evaporation can sometimes accelerate corrosion. The reasons for the slow exhaust rate are as follows: outlet filter core obstruction; too small cross-sectional area or long pipeline of piping; filter mesh blocking at the inlet end; reverse stop The valve won't open. Solutions to this type of problem: replace the outlet filter core, replace the larger cross-sectional line, or shorten the distance of the line; clean the filter and install an air filter at the inlet; check the spring of the reverse stop valve. In addition, steam boiler is easy to appear steam, water supply pipe damage phenomenon: when the pipe leak slightly, make noise, insulation layer wet or leakage steam, dripping water. When the pipe blasting, make a significant noise, and spray steam, water. The change of steam or feed water flow rate is abnormal, the blasting site decreases before the flow meter, and after the flow meter, the flow rate increases. A drop in steam pressure or feed water pressure. When feeding jellyfish tube blasting In 2000, the water level of the operating furnace dropped. The main causes of these phenomena are: steam pipe overtemperature operation, creep expansion beyond the standard or running time too long, metal strength reduced. Steam pipe heating pipe is not sufficient, resulting in serious water shock. The poor quality of water supply results in corrosion of pipe wall. The local scour of the water supply pipe causes the wall of the pipe to be scrubbed. Abnormal operation of the water supply system, excessive pressure fluctuations, water shock or vibration. Bad installation, manufacture, material and welding. The solution is: if the water supply pipeline leakage is slight, can maintain boiler feed water, and does not expand the fault quickly, can maintain short-term operation, put into the spare boiler as soon as possible, if the fault is added Drama, a direct threat to the safety of personal or equipment, should stop the furnace. If the water supply pipe blasting, we should try to detach the faulty pipe section from the system as soon as possible, and if it cannot be unlined and unable to maintain the drum water level, the furnace should also be shut down. If the steam pipe leakage is mild and does not enlarge the fault quickly, it can be maintained for a short period of time and put into the spare boiler as soon as possible. If the failure aggravates, it should be shut down if the failure directly threatens the safety of the person or equipment. If the boiler steam pipe blasting, unable to supply steam or direct threat to the safety of persons and equipment, should also stop the furnace. In the case of steam pipe blasting, an attempt should be made to unlist the faulty pipe segment from the system as soon as possible.
Hot water sauce cooking kettle boiler vessel maintenance method which hot water boiler hot water boiler maintenance methods if poor maintenance during outage or maintenance, the harm is great. Thus, the boiler shutdown should first remove the drum, the angle circle header, the internal pipe and the external wall and smoke vertical boiler scale, slag and all dirt. Fouling and cleaning inside the furnace water wall tubes and convection inside the smoke tube Huigou and boiler maintenance should be performed. Around its maintenance methods commonly used the following two methods. 1, wet maintenance: taking with a sufficient concentration of the alkaline solution in contact with the metal surface of the boiler, the alkaline metal surface to form a protective film to prevent corrosion in the metal. Usually of NaOH, Na2CO3 or formulated as protective Na3PO4 solution (NaOH per ton of oven 8 to 10 kg of water was added, Na2CO3 per ton 20 kg boiler water, boiler water Na3PO4 per ton 20 kg). The specific method is: the boiler all valves, baffles, manholes, hand holes, inspection door is locked, then the good previously dissolved NaOH, Na2CO3 or Na3PO4 solution was added to the boiler, the boiler and then filled with demineralized water. Alkali concentration in the furnace is the water released alongside consistent water gas (mainly O2 and CO2), the furnace may be raised Microflame warming (warmed before, the air valve to open the boiler, without air valve, safety valve available Instead of or relief valve) boiling water into the furnace, so that a natural circulation boiler water. After completion of the air valve (relief valve or safety valve) exhaust gas, and then close the air valve (relief valve or safety valve), then turn off the fire. Boiler water once a week should test to ensure that there is excess boiler water alkalinity. If insufficient alkalinity, should be added NaOH, Na2CO3 or Na3PO4.2, dried maintenance: desiccant absorbs moisture, boiler holding surface drying, to prevent corrosion. Lime (CaO) or anhydrous calcium chloride (of CaCl2) are commonly used as a desiccant. Specifically, the following: After the inner and outer surfaces clean boiler, boiler with Weihuo drying, then open wooden box containing a desiccant into the drum, the header, and furnace flue. The amount of the desiccant is determined according to the volume of the boiler (with large lime, in the boiler 2 to 3 kilograms per cubic meter, if anhydrous calcium chloride, from 1 to 2 kilograms). Then close all valves, flapper, check door, hand holes and Manhole prevent intrusion of external moisture. During the maintenance of open manholes, hand holes and door on a regular basis. If the desiccant is invalid, it should be replaced.
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