System and method for treating nitric acid type tin stripping waste liquid by vacuum distillation
A technology for tin stripping and waste liquid is applied in the system field of vacuum distillation to treat nitric acid type tin stripping waste liquid, which can solve the problems of high cost and consumption of large alkali, and achieve the effect of reducing the processing cost.
Active Publication Date: 2019-06-25
深圳市祺鑫环保科技有限公司
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Problems solved by technology
[0005] The main purpose of the present invention is to provide a system for treating nitric acid-type tin stripping waste liquid by vacuum distillation, aiming to solve the problem that the current nitric acid-type tin stripping waste liquid needs to consume a large amount of alkali and has a high cost
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[0047] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0048] Embodiments of the present invention firstly provide a system for treating nitric acid-type tin stripping waste liquid by vacuum distillation. Processing costs.
[0049] Please refer to figure 1 , figure 1 It is a structural schematic diagram of the first embodiment of the system for treating nitric acid type tin stripping waste liquid by vacuum distillation in the present invention, and the system for treating nitric acid type tin stripping waste liquid by vacuum distillation includes tin stripping waste liquid tank 100, reducing tin Pressure distillation device 200, first solid-liquid separation device 300, copper immersion cylinder 100, second solid-liquid separation device 500 and first electrolytic cell 600.
[0050]The tin stripping waste liquid tank 100 is used to store the nitric acid type tin stripp...
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The invention discloses a system for reduced pressure distillation treatment of a nitric acid type tin-stripping waste liquid. The system for the reduced pressure distillation treatment of the nitricacid type tin-stripping waste liquid comprises a tin-stripping waste liquid tank, a reduced pressure distillation device, a first solid-liquid separation device, a copper plating cylinder, a second solid-liquid separation device and a first electrolytic tank which are sequentially arranged. The invention also discloses a method for reduced pressure distillation treatment of the nitric acid type tin-stripping waste liquid. The system for reduced pressure distillation treatment of the nitric acid type tin-stripping waste liquid can be used to treat the nitric acid type tin-stripping waste liquidwithout adding an alkali for neutralizing and precipitating copper and tin in the nitric acid-type tin-stripping waste liquid, so the treatment cost is reduced.
Description
technical field [0001] The invention relates to the field of waste treatment generated in the manufacture of printed circuits, in particular to a system and method for treating nitric acid type tin stripping waste liquid by vacuum distillation. Background technique [0002] SES (Stripping-Etching-Stripping tin, stripping-etching-sn stripping) process is the most commonly used method for making outer layer circuits in the production of printed circuit boards. Tin stripping is an essential key process, which needs to be used in the stripping process Tin stripping solution, tin stripping refers to the process of using the tin stripping liquid to dissolve and remove the tin coating on the workpiece. During the tin stripping process, when the concentration of tin in the tin stripping liquid reaches saturation, the tin stripping liquid loses its ability to strip tin, forming Tin waste. Among many types of tin stripping solutions, the nitric acid type tin stripping solution is cur...
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IPC IPC(8): C22B7/00C22B15/00C22B25/06C25C1/12C25C1/14C01B21/46
CPCC01B21/46C22B7/00C22B7/008C22B15/0078C22B25/06C25C1/12C25C1/14Y02P10/20
Inventor 梁民
Owner 深圳市祺鑫环保科技有限公司