Method and device for cleaning spinneret plate by near-critical hydrolyzing
A cleaning device and spinneret technology, which is applied in the cleaning field, can solve problems such as difficult cleaning, uneven temperature, and damage to the spinneret, and achieve the effects of short cleaning time, convenient use, and reasonable design
Active Publication Date: 2013-10-02
TONGXIANG ZHONGWEI CHEM FIBER
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Problems solved by technology
[0003] However, these four cleaning methods have certain disadvantages: when cleaning with triethylene glycol and ethylene glycol, since triethylene glycol and ethylene glycol are flammable and explosive chemicals, electric heating and water cooling systems are required for cleaning , resulting in high energy consumption; and after cleaning the spinnerets of 6 batches with triethylene glycol or ethylene glycol, rectification is required, and the processing cost is high. The comprehensive cleaning cost of each spinneret exceeds 4.5 yuan per time; During vacuum calcination and cleaning, because it mainly relies on radiation heat transfer, the temperature in the furnace is uneven, and local high temperature is easy to damage the spinneret. Ester is also prone to carbonization due to high temperature, and it is difficult to be cleaned in the subsequent process. For special-shaped holes and round holes with a diameter of less than 0.16mm, there are often solid residues on the hole wall, making it difficult for the cleaning effect to meet the production requirements of high-quality fibers; water vapor During hydrolysis cleaning, due to the need for a long-lasting high-temperature steam supply and the need to configure a circulating water cooling system, the energy consumption is high, and the cleaning cost of each spinneret is about 4 yuan per time; and the vacuum cleaning and water vapor hydrolysis cleaning methods, each time Cleaning will produce 2 to 6 tons of waste water
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[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] Such as figure 1 , figure 2 As shown, the cleaning device for cleaning the spinneret by near-critical hydrolysis described in this embodiment includes a high-temperature and high-pressure container, a heating mechanism, a temperature and pressure display and control mechanism, a safety valve, a degassing and cooling mechanism, a water filling discharge pipeline, and a recovery mechanism The high-temperature and high-pressure container is composed of a cylinder body 1, an upper end cover 2, flange bolts 3, a hanging basket 4, a hanger support 5 and a support foot 6, and the cylinder body 1 is provided with an upper end cover 2 matched with it, and the upper end The cover 2 is connected with the cylinder body 1 through the flange bolt 3; the cylinder body 1 is provided with a heating mechanism, and the heating mechanism is composed of a jacket 7, a temperature t...
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The invention discloses a cleaning method, and particularly relates to a method and device for cleaning a polyester spinneret plate by a near-critical hydrolyzing polyester process. The method and device for cleaning the spinneret plate by the near-critical hydrolyzing can meet the requirement for cleaning the high-quality fiber spinneret plate, reduce the cleaning expense, save energy and reduce environmental pollution. The device has the advantages of being convenient to use, short in cleaning time, low in energy consumption, reasonable in design, and the like.
Description
technical field [0001] The invention relates to a cleaning method, in particular to a method for cleaning a polyester spinneret through a near-critical hydrolysis polyester process and a cleaning device thereof. Background technique [0002] At present, there are four ways to clean polyester spinnerets at home and abroad, namely triethylene glycol cleaning, ethylene glycol cleaning, vacuum calcination cleaning and water vapor hydrolysis cleaning. [0003] However, these four cleaning methods have certain disadvantages: when cleaning with triethylene glycol and ethylene glycol, since triethylene glycol and ethylene glycol are flammable and explosive chemicals, electric heating and water cooling systems are required for cleaning , resulting in higher energy consumption; and after cleaning six batches of spinnerets with triethylene glycol or ethylene glycol, rectification is required, and the processing cost is high. The comprehensive cleaning cost of each spinneret exceeds 4.5...
Claims
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IPC IPC(8): D01D4/04
Inventor 赵春财许纪忠崔利
Owner TONGXIANG ZHONGWEI CHEM FIBER