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Petrochemical enterprises sulfuric acid pipe insulation electric tracing band design scheme

by:AAA     2020-04-15
( Industry news] Petrochemical enterprises sulfuric acid pipe insulation design of electric tracing band knifeqiao P xi 'an petrochemical enterprises sulfuric acid pipe insulation design scheme of electric tracing band xian plains is a warm temperate semi-humid continental monsoon climate, cold, small wind, foggy in winter, many enterprises in order to ensure the normal operation of winter process pipes or tanks, the need to adopt anti-freezing heat preservation measures - — High temperature electric heating. Some petrochemical enterprise sulfuric acid pipe needs to be done in xian electric tracing band heat preservation, in order to guarantee in a cold environment, sulfuric acid pipeline's normal operation, keeping the temperature of sulfuric acid medium pipeline within a certain range. Parameters: the temperature requirements: initial temperature: ℃, maintain temperature: ℃; The lowest temperature: ℃; Thermal insulation material: glass fiber; Insulation thickness: mm; Diameter: DN and DN. Pipe length: DN length m, DN length meters; According to the parameters to calculate the heat; Three core series constant power electric tracing band ( HTPTA) ) Total number: m meters, electric tracing band laid on DN sulfuric acid pipelines, installation time laid m each of the three core series constant power electric tracing band, a total of laying the root. Parallel constant power electric tracing band ( HWL( Q) J) Total amount: m; Constant power cables laid in parallel on the DN sulfuric acid pipelines. When installation laid m each of the three core series constant power electric tracing band, a total of laying the root. Constant power electric tracing band using a high temperature resistant plastic for the outer sheath, conductive bus for fever materials special heat tracing products. Constant power electric tracing band by means of constant current discharge energy, form a continuous and even heating electric tracing band. Parallel type electric tracing band is suitable for short pipe heat preservation heat tracing, average length in meters, so the parallel constant power electric tracing band is suitable for m sulfuric acid pipe insulation. Series constant power electric tracing band commonly used heating power options for ~ W/m, series electric tracing band and parallel electric tracing band work and exposure temperature, electric tracing band the highest working temperature, maximum exposure temperature can reach ℃. Series of constant power electric tracing band with long length, can amount to thousands of meters, so it is especially applicable to heating of tank, long distance pipeline heat tracing and complicated special pipe heating equipment, etc. It is important to note that because of the particularity of working principle of the constant power electric tracing band, needed to install, explosion-proof temperature controller to adjust and control the medium temperature, to achieve a state of balance, to maintain the temperature of the sulfuric acid. Shaanxi electric tracing band construction method, with strong pressure sensitive tape every ~ cm, the electric tracing band is fixed on the pipeline. Series, constant power electric heating in the first power supply point to connect power line, short tail should be reliable. , according to the design scheme of electric tracing band paved way for tile. After the installation is complete, with aluminum foil tape along the direction of the electric tracing band close to on the pipeline. , all the cooling body should reserve the required length of electric tracing band according to design requirements, and should pay attention to the following points: does the cooling body should design the cable length required. Does series-parallel constant power electric tracing band overlap or cross use is forbidden. Does laying method should as far as possible make the heat dissipation body when necessary, can be removed for repair or replacement at any time, without damage to electric tracing band or affect other circuits. Anhui, tecon group co. , LTD
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