High-salinity wastewater supercritical water oxidation harmless treatment system and control method
A technology for supercritical water oxidation and harmless treatment, which is applied in the fields of oxidized water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. problems, to achieve the effect of solving inorganic salt blockage and ensuring safe and reliable operation
Pending Publication Date: 2022-07-26
XI AN JIAOTONG UNIV
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a high-salt wastewater supercritical water oxidation harmless treatment system and control method for the above-mentioned deficiencies in the prior art, so as to realize the efficient treatment of high-salt wastewater and solve the problem of supercritical water oxidation system. Problems of low thermal efficiency and salt deposition during the reaction process
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[0036] The technical solutions of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0037] In the present invention, unless otherwise specified, all the embodiments and preferred implementation methods mentioned herein can be combined with each other to form new technical solutions.
[0038] In the present invention, unless otherwise specified, all the technical features and preferred features mentioned herein can be combined with each other to form a new technical solution.
[0039] In the present invention, unless otherwise specified, percentage (%) or part refers to the weight percentage or weight part of the composition.
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The invention discloses a high-salinity wastewater supercritical water oxidation harmless treatment system and a control method, a heat removal device and a preheating device in a supercritical water oxidation reaction main unit can realize gradient utilization of reaction heat in a reactor and preheating and temperature rise of materials in a large space of the reactor, and a salt discharge unit can realize online continuous desalination; salt deposition in the reactor is prevented. The control method comprises the steps of safe flow control and operation control of the first cooling pipeline, safe flow control and operation control of the second cooling pipeline, preheating device inorganic salt crystallization blockage control and guarantee of safe and controllable operation of the system. According to the invention, not only can high-efficiency harmless treatment of high-salinity wastewater be realized, but also the problems that waste heat in a supercritical water oxidation system is not fully utilized and salt is deposited in a reaction process are solved.
Description
technical field [0001] The invention belongs to the technical field of supercritical water treatment of organic waste, and in particular relates to a supercritical water oxidation harmless treatment system for high-salt wastewater and a control method. Background technique [0002] Supercritical water oxidation technology uses supercritical water as the reaction medium to oxidize and decompose high-salt wastewater and waste into CO under a homogeneous system 2 , H 2 O, N 2 It is listed as the most promising wastewater and waste treatment technology in the field of energy and environment. [0003] The development of supercritical water oxidation technology has achieved industrial application so far, but it has also encountered some technical challenges. The most difficult problem is that the corrosion of materials and salt deposits easily block the pipeline. Under severe reaction conditions such as high temperature and high pressure and the presence of acid / alkali / salt, it...
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Login to View More IPC IPC(8): C02F1/72C02F101/30
CPCC02F1/72C02F2201/002C02F2303/10C02F2101/30
Inventor王树众张熠姝张凡段远望徐甜甜李建娜
OwnerXI AN JIAOTONG UNIV