Stainless steel equipment cleaning agent, cleaning solution and cleaning method
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A stainless steel and cleaning agent technology, applied in the chemical industry, can solve the problems of inability to discharge directly, labor and time-consuming, affecting cleaning speed, etc., and achieve the effect of promoting cleaning speed, good decontamination effect, and good descale effect.
Active Publication Date: 2014-08-13
ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
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Problems solved by technology
Although the mechanical dredging method is low in cost, it needs to dismantle the equipment, which is not only labor-intensive, labor-intensive and time-consuming, but also easily damages the equipment
However, the traditional chemical cleaning method using weak organic acids such as oxalic acid or citric acid combined with strong inorganic acids will generate calcium and magnesium precipitates of organic acids during the cleaning process, which will affect the cleaning speed.
At the same time, the wastewater after cleaning cannot be degraded by itself, so it cannot be discharged directly, and the treatment process of cleaning wastewater is very complicated and costly
More importantly, this traditional chemical cleaning method cannot completely remove the dirt in the internal circulation water channel of the stainless steel heat exchange equipment with complex structure
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Embodiment 1
[0039] In order to illustrate the beneficial effect and performance of this cleaning agent, the concrete steps of the present embodiment are as follows:
[0040]1) Prepare polyglycolic acid (molecular weight of polyglycolic acid is 8000), biochemical fulvic acid, aminoacetic acid and water, and prepare according to 100 kg of cleaning solution, and the weight ratio of each component is a: b: c: d=6: 8 : 3: 83;
[0041] 2) Take two-thirds of the water and heat it to the required temperature of the circulating fluid at 50°C, add aminoacetic acid and stir evenly, add biochemical fulvic acid and stir to dissolve, and obtain A solution;
[0042] 3) Take the remaining water and add polyglycolic acid, stir and dissolve to obtain solution B;
[0043] 4) Mix A solution and B solution.
[0044] In this embodiment, the specific physical and chemical indicators of the cleaning agent, the test results of the corrosiveness to stainless steel and the dirt cleaning rate are shown in Table 1-...
Embodiment 2-4
[0106] The weight composition of the cleaning agent in Examples 2-4 and the amount of water required to prepare the corresponding cleaning solution are shown in Table 6.
[0107] Table 6 The composition of the cleaning agent of Example 2-4 and the amount of water required to prepare the corresponding cleaning solution
[0108]
[0109] Stainless steel equipment cleaning method, including the following steps:
[0110] (1) Material preparation: refer to Figure 6 Calculate the capacity of the equipment to be cleaned according to the cycle flow chart; prepare polyglycolic acid, biochemical fulvic acid, glycine and water with reference to the dosage ratio in Table 6;
[0111] (2) Take two-thirds of the water and heat it to the required temperature of the circulating fluid, add aminoacetic acid and stir evenly, add biochemical fulvic acid and stir to dissolve, and obtain A solution;
[0112] (3) Take the remaining one-third of the water and add polyglycolic acid, stir to disso...
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Abstract
The invention relates to a stainless steel equipment cleaning agent. The stainless steel equipment cleaning agent comprises the following effective components in parts by weight: 5-8 parts of polyglycolic acid, 7-10 parts of biochemical fulvic acid and 2-5 parts of amino acetic acid, wherein water is added for complementing into 100 parts, so that a cleaning solution can be prepared. A method for cleaning stainless steel equipment by utilizing the cleaning agent comprises the following steps: (1) preparing raw materials: weighing the following components in parts by weight: 5-8 parts of polyglycolic acid, 7-10 parts of biochemical fulvic acid, 2-5 parts of amino acetic acid and balance of water, wherein the total parts by weight of polyglycolic acid, biochemical fulvic acid, amino acetic acid and water is 100 parts; (2) taking two thirds of water and heating to 50 minus or plus 5 DEG C, adding amino acetic acid and uniformly stirring, adding biochemical fulvic acid, and stirring for dissolution, so that a solution A is obtained; (3) taking the rest of water, adding polyglycolic acid, and stirring for dissolution, so that a solution B is obtained; (4) introducing the solution A into equipment to be cleaned and circulating for 5-10 minutes, and then introducing the solution B and carrying out circulation cleaning. The stainless steel equipment cleaning agent has few components, is environment-friendly and produces less corrosion to the equipment, and descaling rate is more than 98%.
Description
technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to an environment-friendly cleaning agent for stainless steel equipment. Background technique [0002] The material of stainless steel heat exchange equipment is generally made of 304 and 316 stainless steel materials. It is responsible for the exchange of cold and heat and the transfer of energy. It is an important equipment for chemical production enterprises and many units in winter. Due to the water quality, after a long-term use of the stainless steel heat exchanger, the inner wall of the heat exchange tube or the heat exchange plate will produce dirt such as rust sludge, fungal sludge and rust scale. The generation of these dirt will cause corrosion and blockage of the tube wall or plate wall of the stainless steel heat exchanger, resulting in poor heat transfer performance of the heat exchanger, reduced heat transfer efficiency and less than the rated he...
Claims
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Application Information
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