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A kind of compound that can be used for preparing heating system cleaning agent and preparation method thereof

A heating system and compound technology, applied in the field of cleaning agents, can solve problems such as waste of fuel or electricity, thermal expansion and contraction, uneven force, gastrointestinal digestive and absorption disorders, and constipation, so as to improve thermal efficiency and reduce scaling speed effect

Inactive Publication Date: 2018-01-12
青岛科标检测研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, hard scale has poor thermal conductivity, which will lead to poor heat transfer on the heating surface, thus wasting fuel or electricity
Secondly, if the hard scale is cemented on the inner wall of the boiler, it will also greatly increase the risk of boiler bursting or even explosion due to thermal expansion and contraction and uneven force.
Thirdly, when the hard scale is cemented, a large amount of heavy metal ions are often attached. If the boiler is used to contain drinking water, there is a risk of excessive heavy metal ions being dissolved in drinking water
In addition, scale affects human health, easily causes gastrointestinal digestion and absorption disorders and constipation, and increases the incidence of gastritis and various stones

Method used

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  • A kind of compound that can be used for preparing heating system cleaning agent and preparation method thereof
  • A kind of compound that can be used for preparing heating system cleaning agent and preparation method thereof
  • A kind of compound that can be used for preparing heating system cleaning agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 10mmol (1.26g) of compound A to 20ml of distilled water, heat to 75°C and stir for 30min. After confirming that the raw material is completely dissolved, add 10ml (25%) of methylamine aqueous solution, the reaction temperature is 90°C, and decolorize with an appropriate amount of activated carbon after 5 hours of reaction , recrystallized to obtain B, ESI-MS, m / e=126.03 ([M+H] + ).

[0020] 8mmol (1.11g) of compound B and 9mmol (0.63g) of C were dissolved in 20mL of DMF, stirred, 2.07g (15mmol) of potassium carbonate was added, and stirring was continued at 100°C until the raw materials were consumed (about 10 hours). The reaction mixture was poured into 100 mL of ice water, stirred, adjusted to pH=2 with concentrated hydrochloric acid, extracted with 50 mL of dichloromethane, the combined extracts were washed once with brine, dried over anhydrous magnesium sulfate, and the solvent was distilled off in a rotary evaporator to obtain a residue , purified by column ch...

Embodiment 2

[0026] Static anti-scaling test:

[0027] According to the National Standard GB / T16632-2008 of the People's Republic of China "Measurement Calcium Carbonate Deposition Method for Scale Inhibition Performance of Water Treatment", the static scale inhibition experiment was carried out, and the compound of formula I prepared in Example 1 was formulated into a solution for the experiment, and the test results are as follows Table 1 shows:

[0028] Numbering

[0029] Table 1 Static anti-scaling test results

Embodiment 3

[0031] Mouse Toxicity Test:

[0032] 20 ICR mice (provided by Beijing Weitong Lihua Experimental Animal Technology Co., Ltd.), weighing 25-30 grams, were used for acute toxicity experiments. Mice are divided into two groups at random, i.e. control group, administration group, fasting 12 hours before the experiment, then give the 0.10mol / L aqueous solution of the compound of formula 1 that prepares as embodiment 1 gavage, half lethal dose (LD 50 ) was tested and measured, and the LD 50 >2g / kg, so it can be considered as basically non-toxic. The maximum tolerated dose test was carried out on the administration group. Results: According to the feeding amount of 120ml / kg orally, four times in one day, no mice died within seven days, and no toxic reaction was found in the organs of the sacrificed mice. Significant differences.

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Abstract

The invention discloses a chemical compound, as shown in a formula I, applicable to preparation of a cleaning agent for a heat-supply and heating system, and a preparation method and application thereof. According to the invention, experiment results show that the chemical compounds as shown in the formula I can quickly and effectively dissolve and chelate calcium ions and maintain good solubility. The cleaning agent used for the heat-supply and heating system and prepared from the chemical compound as shown in the formula I can effectively and thoroughly clean various rust spots, dirts and cured substances which are stuck to a boiler and a pipeline, reduces the scaling speed of the boiler and the pipeline, and can significantly improve the heat efficiency of the boiler and the pipeline.

Description

technical field [0001] The invention relates to a cleaning agent for heating and heating systems, in particular to a compound that can be used to prepare cleaning agents for heating and heating systems, and also relates to a preparation method of the compound. Background technique [0002] After the central heating and heating system has been used for several years, a large amount of dirt such as scale and rust will be generated in the system, which will affect the normal operation of the system, and even fail to meet the specified heating temperature requirements in severe cases. This leads to an increase in the number of system maintenance, a decrease in efficiency and a waste of energy. Removing the dirt in the system is the only effective way to solve the above problems. [0003] Typically, boiler cleaning agents are used to remove dirt from the system. The popular name of boiler cleaning agent is boiler descaling agent, as the name implies, it refers to a chemical age...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D401/04C11D7/32
CPCC07D401/04C11D7/3281Y02P20/10
Inventor 鲁汇智何晓伟韩连超张威
Owner 青岛科标检测研究院有限公司
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