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Preparation method and application of ferrous sulfate solution and preparation devices

The technology of a ferrous sulfate solution and a preparation device, which is applied in the direction of ferric sulfate and the like, can solve the problem of high cost and achieve the effects of stable quality, simple process and reduced production cost.

Active Publication Date: 2010-11-24
深圳市斯瑞曼精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The ferrous sulfate sold in the market mainly uses the by-products in the production of titanium dioxide. The by-product ferrous sulfate produced in the process of producing titanium dioxide products by the sulfuric acid method is obtained through concentration, crystallization, dehydration, and packaging processes, and then transported to water treatment plants. higher cost

Method used

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  • Preparation method and application of ferrous sulfate solution and preparation devices
  • Preparation method and application of ferrous sulfate solution and preparation devices
  • Preparation method and application of ferrous sulfate solution and preparation devices

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preparation example Construction

[0028] The preparation method of the ferrous sulfate solution of the present invention and its application are used in conjunction with the chlorine dioxide generator in the tap water production plant, and the iron powder is adjusted automatically or manually according to the chlorine dioxide gas production of the chlorine dioxide generator. The amount of addition, the produced ferrous sulfate solution, can fully meet the needs of removing the chlorite contained in the water treated by pure chlorine dioxide in the waterworks, making full use of the reaction mother liquor produced by the chlorine dioxide generator , there is no need to purchase ferrous sulfate to be transported back to the tap water production plant, and there is no need to neutralize or transport the mother liquor. The process is simple and can reduce the production cost of tap water.

[0029] Such as figure 1 Shown, the preparation device of ferrous sulfate solution of the present invention is provided with a...

Embodiment 1

[0031]Example 1, the storage hopper 1 of iron powder is Φ300×400mm, the speed regulating motor 2 adopts the CH100W161 type of Guangdong Dongxing Reducer Co., Ltd., the screw feeder 3 is Φ76×350mm, the reactor 4 is Φ300×800mm, and the air pump 5 adopts Guangdong Risheng Group Co., Ltd. ACO-004 air pump, air inlet pipe 6 diameter is Φ20mm, reaction mother liquid inlet pipe 7 diameter is Φ32mm, air outlet pipe 8 diameter is Φ50mm, air gas scrubber 9Φ200×500mm, first liquid outlet pipe 10 UPVC is used, the diameter is Φ32mm, the centrifugal pump 11 is the 70R type of Shanghai Pump Factory, the filter 12 is the LE90 type of Shenzhen Chengdelai Industrial Co., Ltd., the second outlet pipe 13 is UPVC with a diameter of Φ32mm, and the flow meter 14 is Zhejiang Yuyao Jintai Instrument Factory LZS-15 type, the second pipe 15 adopts UPVC with a diameter of Φ32mm, the collection barrel 16 is Φ300×400mm, the inner diameter of the nozzle of the water ejector 17 is Φ8mm, and the inner diamete...

Embodiment 2

[0033] Embodiment 2, adopt embodiment 1 device, simulate gas production with metering pump and be the reaction mother liquor amount of 5000g / h pure chlorine dioxide generator, squeeze into reaction mother liquor to the preparation device of ferrous sulfate solution, add iron powder, react The mass ratio of mother liquor to iron powder is 50:2.5, and it is added evenly and continuously for 5 hours, the flow rate of mother liquor is 50kg / h, and the flow rate of filling air is 4m 3 / h, utilize filling into air to stir, obtain ferrous sulfate solution, detect the concentration of ferrous sulfate every hour, and concentration is shown in Table 2.

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Abstract

The invention discloses a preparation method and application method of ferrous sulfate solution and preparation device, aiming to solve the technical problem of comprehensively utilizing the reaction mother liquor of the chlorine dioxide generator. The preparation method of the invention comprises the step of adding iron powder and filling air in the reaction mother liquor of a pure chlorine dioxide generator with sulfuric acid. The application method is to add ferrous sulfate solution in water containing chlorite, wherein the water is processed by pure chlorine dioxide. The structure of the preparation device is as follows: a reaction mother liquor inlet pipe of the chlorine dioxide generator and an air inlet pipe are connected in the generator, the upper part of the generator is connected with the outlet of a feeder, and a first discharge pipe on the part of the generator is connected with a gathering barrel through a pump, a filter and a second discharge pipe. Compared with the prior art, in the preparation method of the invention, the reaction mother liquor of the pure chlorine dioxide generator is used as raw material; and iron powder is added to react and generate ferrous sulfate solution, thus removing chlorite in water, comprehensively utilizing the reaction mother liquor generated by the chlorine dioxide generator and reducing the production cost of tap water.

Description

technical field [0001] The invention relates to a method and device for comprehensively utilizing the reaction mother liquor of a pure chlorine dioxide generator, in particular to a method, application method and preparation method for preparing a ferrous sulfate solution using the reaction mother liquor of a pure chlorine dioxide generator device. technical background [0002] Ferrous sulfate has an extremely wide range of uses. In water treatment, it can be used as a water purifier, and it is also the best reducing agent for removing chlorite, a by-product produced when chlorine dioxide is used to purify water. Experiments have proved that adding ferrous sulfate solution to chlorite-containing water treated with pure chlorine dioxide can quickly remove chlorite in the water, and at the same time, ferrous salt will form trivalent Iron can be used as a coagulant to increase flocculation for water treatment. [0003] Chlorine dioxide is reduced to ClO in drinking water ster...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/14
Inventor 刘景华
Owner 深圳市斯瑞曼精细化工有限公司