Potassium ferrate disinfectant and preparation method thereof
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A technology of potassium ferrate and disinfectant, applied in the directions of disinfectants, botanical equipment and methods, chemical instruments and methods, etc., can solve the problems of high cost, large amount, complicated operation and the like, and achieve the effect of reducing cost
Inactive Publication Date: 2012-10-03
ANHUI HUANGHUAI VETERINARY MEDICINE
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The traditional hypochlorite oxidation method can be divided into two types: one is the indirect method, that is, sodium ferrate is first obtained, and then replaced with potassium hydroxide to obtain potassium ferrate. This method is cumbersome to operate and the product yield is partial Low; Another method is the direct method, which directly produces potassium ferrate. This method is an
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Embodiment 1
[0019] A potassium ferrate disinfectant is composed of 25 kg of sodium hydroxide, 30 kg of potassium hydroxide, 30 kg of ferric chloride and 15 kg of chlorine gas.
[0020] A preparation method of potassium ferrate disinfectant, comprising the following method steps,
[0021] ①. Sodium production
[0022] React with 40% sodium hydroxide solution and chlorine to generate hyposodium, and then add sodium hydroxide to make saturated sodium hypochlorite, and filter for subsequent use;
[0023] ②. synthesis reaction
[0024] React with saturated hyposodium and ferric iron to generate sodium ferrate;
[0025] ③. Carry out displacement reaction filtration with potassium hydroxide and sodium ferrate to obtain potassium ferrate crude product;
[0026] ④. Washing the crude potassium ferrate with absolute ethanol to obtain the refined potassium ferrate, and then suction filtering and drying at low temperature to obtain the dried refined potassium ferrate.
Embodiment 2
[0028] A potassium ferrate disinfectant is composed of 30 kilograms of sodium hydroxide, 25 kilograms of potassium hydroxide, 35 kilograms of ferric sulfate and 10 kilograms of chlorine gas.
[0029] A preparation method of potassium ferrate disinfectant, comprising the following method steps,
[0030] ①. Sodium production
[0031] React with 40% sodium hydroxide solution and chlorine to generate hyposodium, and then add sodium hydroxide to make saturated sodium hypochlorite, and filter for subsequent use;
[0032] ②. synthesis reaction
[0033] React with saturated hyposodium and ferric iron to generate sodium ferrate;
[0034] ③. Carry out displacement reaction filtration with potassium hydroxide and sodium ferrate to obtain potassium ferrate crude product;
[0035] ④. Washing the crude potassium ferrate with absolute ethanol to obtain the refined potassium ferrate, and then suction filtering and drying at low temperature to obtain the dried refined potassium ferrate....
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Abstract
The invention provides a potassium ferrate disinfectant and a preparation method of the potassium ferrate disinfectant, and relates to the technical field of a disinfectant, wherein the potassium ferrate disinfectant consists of raw material components with a certain quantity such as sodium hydroxide, potassium hydroxide, ferric iron and chlorine. The preparation method comprises the following steps of: leading 40% sodium hydroxide solution to have reaction with the chlorine to generate sodium hypochlorite, when the reaction stops, adding the sodium hydroxide, to prepare saturated sodium hypochlorite, and filtering for later use; leading the saturated sodium hypochlorite to have reaction with the ferric iron to generate sodium ferrate; carrying out replacement reaction between the potassium hydroxide and the sodium ferrate, and filtering to obtain a potassium ferrate crude product; washing the potassium ferrate crude product by absolute ethyl alcohol to obtain a potassium ferrate refined product, and drying at low temperature in a leaching way to obtain the dried potassium ferrate refined product. According to the invention, the chlorine is charged into the sodium hydroxide to prepare the sodium hypochlorite firstly, the sodium ferrate can be further prepared, and the potassium hydroxide is used for replacing to generate the potassium ferrate, so that the potassium hydroxide can be saved by 30%-40%, and the cost can be reduced by 25%-30%, and the more than 98% potassium ferrate refined product can be continuously and stably produced due to the proportioning of the raw materials.
Description
technical field [0001] The invention relates to the technical field of disinfectants, in particular to a potassium ferrate disinfectant and a preparation method thereof. Background technique [0002] Potassium ferrate is an excellent oxidant with high-efficiency disinfection, and is a new type of non-chlorine high-efficiency disinfectant. Mainly used for drinking water treatment. In chemical production, it is used as an oxidizing agent for sulfonic acid, nitrite, ferrocyanide and other inorganic substances. It is used to remove manganese, antimony and arsenic in zinc smelting. It is used in cigarette filters in the tobacco industry. Potassium ferrate pure product is a dark purple shiny powder, stable in dry air below 198 °C, easily soluble in water to form a light purple solution, after standing still, it will decompose to release oxygen, and precipitate hydrated ferric oxide (i.e. iron oxide). The alkalinity of the solution increases with decomposition, and it is quite s...
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