Rhodium powder dissolving device based on alternating current arc process and application thereof
An AC arc and dissolution device technology, applied in the direction of dissolution, dissolution, electrolysis, etc., can solve the problems of a large number of self-coupling transformation equipment, prone to failure, and large floor space, so as to save investment, improve efficiency, and occupy a large area. small area effect
Active Publication Date: 2013-09-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0015] One is to overcome the defects that the existing technical scheme uses self-coupling transformers with a large number, large floor space, prone to failure, and frequent maintenance. The present invention provides an AC arc generation controller for batch rhodium powder arc dissolution , can provide 27 sets of 55-65 volts of AC arc current, loaded on the AC arc electrolytic cell, to achieve the purpose of directly dissolving high-purity precious metal rhodium powder into hydrochloric acid to prepare rhodium trichloride hydrate
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Embodiment 1
[0056] according to figure 1 and figure 2 The schematic diagram and schematic diagram shown create an AC arc rhodium powder dissolving device. The device is connected to 27 sets of AC arc electrolytic cells; the voltage of the AC arc electrolytic cell is variable at 55 volts, 60 volts, and 65 volts; the maximum output current of each group of electrolytic cells is 40 amps; the power supply is three-phase four-wire 380 volts alternating current; the total power is 75KW; The AC arc generation controller adopts self-cooling method. The three-phase four-wire AC power supply, the AC arc generator controller and the electrolytic cell are connected as follows:
[0057] A phase is divided into three groups of A4, A5 and A6. A4 is connected to three groups of AC arc electrolytic cells c1, c2 and c3; A5 is connected to three groups of AC arc electrolytic cells of c4, c5 and c6; A6 is connected to three groups of c7, c8 and c9 AC arc electrolytic cells; a total of 9 sets of AC arc el...
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Abstract
The invention discloses a rhodium powder dissolving device based on an alternating current arc process and application thereof. In the device, 27 groups of alternating current arc electrolyzers are installed with three variable electrolysis voltages of 55 volts, 60 volts and 65 volts. The device is used for alternating current arc dissolution of rhodium powder with the processing capacity of 2.7-3.1kg / day. The device has the advantages of compact structure, small occupied area, low equipment cost and large rhodium powder dissolving scale.
Description
technical field [0001] The invention relates to an electrodissolving device for directly dissolving high-purity noble metal rhodium powder into hydrochloric acid and its application. More specifically, it is a device that uses hydrochloric acid as a medium and rhodium powder as a contact to dissolve rhodium powder under the action of an AC arc and its application. Background technique [0002] Rhodium trichloride (RhCl 3 ·xH 2 O, x=0~5) is the most common compound of rhodium. It is often used as the initial raw material for the synthesis of other rhodium compounds and the preparation of catalysts. Rhodium-containing compounds and catalysts are widely used in petrochemical and organic synthesis fields. For example, the low-pressure carbonylation butan-octanol unit and the methanol carbonylation unit to produce acetic acid and acetic anhydride all use a large amount of rhodium compounds as homogeneous catalysts. In addition, in the fields of catalytic hydrogenation, fuel ...
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IPC IPC(8): C25B9/00C25B1/26B01F1/00
Inventor 吕顺丰张秀英吴秀香黄凤兴胡波
Owner CHINA PETROLEUM & CHEM CORP