Hydrogenation and deoxidization method for palladium ion type catalytic resin

A technology for catalytic resin, hydrogenation and deoxygenation, which is applied in the field of water treatment, can solve the problems of complex process and high production cost, and achieve the effects of wide temperature range, good hydraulic properties and large amount of treated water.

Inactive Publication Date: 2005-11-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process uses an anionic carrier, and the palladium on the resin is processed in the form of a single metal and is processed by a special process. The process is complicated and the production cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 20 grams of PdCl 2 Dissolve in 10 liters of distilled water, stir to make it dissolve completely, then pass the palladium chloride solution through a contact tower equipped with 4 liters of strong acid cation exchange resin at a flow rate of 5m / h, Wash with water to remove Cl - and the replaced Na + , dry the resin at room temperature, and then pass hydrogen into the dried resin for 2.5 hours to reduce.

[0028] The water containing dissolved oxygen is input from the top of the packed tower equipped with Raschig rings, and the water is evenly sprayed to the entire cross-section through the liquid distribution device, and the hydrogen enters the tower from the hydrogen gas distribution device installed at the bottom of the packed tower The upper part flows, and the water sprayed from the top contacts the hydrogen gas from the bottom in reverse, and the gas-liquid mass transfer is realized on the surface of the Raschig ring, and the hydrogen gas dissolves into the ...

Embodiment 2

[0030] Take 200 grams of PdCl 2 Dissolve in 100 liters of distilled water, stir to make it dissolve completely, then pass the palladium chloride solution through a contact tower equipped with 40 liters of strong acid cation exchange resin at a flow rate of 10m / h, and then pass the solution at a flow rate of 10m / h Wash with water to remove Cl - and the replaced Na + , dry the resin at room temperature, and then pass hydrogen into the dried resin for reduction for 4 hours.

[0031] The water containing dissolved oxygen is input from the top of the packed tower equipped with Raschig rings, and the water is evenly sprayed on the entire cross-section through the liquid distribution device, and the hydrogen enters the tower from the hydrogen gas distribution device installed at the bottom of the packed tower The upper part flows, and the water sprayed from the top contacts the hydrogen gas from the bottom in reverse, and the gas-liquid mass transfer is realized on the surface of t...

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Abstract

The invention discloses a hydrogenation and deoxidization method for palladium ion type catalytic resin, which comprises dissolving palladium chloride in distilled water, agitating homogeneously, passing palladium chloride solution through contacting tower containing strong acid type cationic ion-exchange resin, rinsing with water, drying at room temperature, letting hydrogen gas into resin for reduction, letting water with dissolved oxygen from the top of the packed column, sprinkling onto the whole cross-section homogeneously through a liquid distribution apparatus, lifting the water with dissolved hydrogen gas with a pump, injecting into a contacting tower incorporating palladium ion type catalytic resin, and passing water through palladium ion type catalytic resin.

Description

[0001] Technology area [0002] The invention belongs to a water treatment method, in particular to a palladium ion-type catalytic resin hydrogenation and deoxygenation process. Background technique [0003] Under normal temperature and pressure, a certain amount of oxygen (dissolved oxygen) will dissolve in water, and its concentration is generally 8-10mg / L. For drinking water, the higher the concentration of dissolved oxygen in water, the better the water quality, but for many industries In terms of water, high concentrations of dissolved oxygen can cause corrosion of equipment or degradation of product quality. For example, the presence of dissolved oxygen in boiler feed water will aggravate the corrosion of the system, thereby shortening the service life of pipelines and equipment. Therefore, in the "Water Quality Standard for Low-Pressure Boilers" (GB1576-96), it is required that steam boilers with evaporation greater than 6t / h and Hot water boilers with a rated power ≥ ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/20
Inventor 于水利时文歆
Owner HARBIN INST OF TECH
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