Application effect of magnetic scale inhibitor and polycarboxylic acid scale inhibitor for the air-conditioning circulating water system of textile mills

doi:10.19398/j.att.202104049

Abstract

Abstract:

In view of the serious scaling in the air-conditioning circulating water system of textile mills, based on magnetic scale inhibition technology and dosing scale inhibitors, through analyzing scale samples, this paper finds that magnetization treatment can reduce deposition of calcium scale that has been formed by changing the crystal form, while the scale inhibitor inhibits the amount of calcium scale by destroying the growth of crystals. Through static experiments, it is found that these two methods have a better inhibiting effect on water samples with shorter circulation time and lower concentration ratio. YC2655 scale inhibitor has the best inhibiting effect among PC2566, YC2655 and YL505 polycarboxylic acid scale inhibitors. For circulating water that has been circulated for 1 month, magnetic scale inhibitor has a higher anti-scaling rate than dosing polycarboxylic acid scale inhibitor, and its anti-scaling rate is up to 96%. Electrical conductivity and pH can reflect scaling tendency, the smaller electrical conductivity and pH, the smaller scaling tendency of water samples. Therefore, through the detection and comparison of untreated water samples and water samples treated with the above two methods, by analyzing the change rules of their conductivity and pH over time, it is found that the magnetization treatment has a better and more stable anti-scaling effect than dosing scale inhibitor. Finally, it is concluded that compared with dosing polycarboxylic acid scale inhibitor, magnetic scale inhibitor can better solve the scaling of the air-conditioning circulating water system of textile mills.

Key words: textile mill, air-conditioning circulating water, magnetic field, scale inhibitor

摘要：

针对纺织厂空调循环水系统结垢严重的问题,基于磁阻垢技术和投加阻垢剂,通过垢样分析发现磁化处理是通过改变晶型让形成的钙垢沉积性能下降,而阻垢剂是通过破坏晶体生长来抑制钙垢量;通过静态实验发现,这两种方法对于循环时间较短浓缩倍数较低的水样抑垢效果较好,在PC2566型、YC2655型、YL505型聚羧酸类阻垢剂中,YC2655型阻垢剂抑垢效果最佳,对于已经循环一个月的循环水,磁阻垢比投加聚羧酸类阻垢剂抑垢率更高,其抑垢率高达96%;由于电导率和pH能够反应结垢倾向,电导率和pH越小,水样结垢倾向也就越小,因此通过检测对比分析未经处理的水样以及经两种方法处理后水样的电导率、pH随时间变化的规律,发现磁化处理比投加阻垢剂处理的抑垢效果更好且更稳定。最终得出磁化处理比投加聚羧酸类阻垢剂能更好地解决纺织厂空调循环水系统结垢问题。

关键词: 纺织厂, 空调循环水, 磁场, 阻垢剂

CLC Number:

TS108.5

SU Zhe, YAN Suqian, QIN Li, HU Qingfeng. Application effect of magnetic scale inhibitor and polycarboxylic acid scale inhibitor for the air-conditioning circulating water system of textile mills[J]. Advanced Textile Technology, 2022, 30(1): 169-177.

苏喆, 颜苏芊, 秦莉, 呼庆锋. 磁阻垢与聚羧酸类阻垢剂在纺织厂空调循环水系统中的应用效果[J]. 现代纺织技术, 2022, 30(1): 169-177.

Figures/Tables 15

References 14

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	磁场强度 /(A·m^-1)	磁化后的结垢量G_m/g	抑垢率/%
循环一个月循环水	5000	0.0387	62
	8000	0.0295	71
	11000	0.0142	86
	14000	0.0040	96
	17000	0.0061	94
循环两个月循环水	5000	0.0395	61
	8000	0.0360	65
	11000	0.0190	81
	14000	0.0061	94
	17000	0.0091	91
循环三个月循环水	5000	0.0423	59
	8000	0.0381	63
	11000	0.0230	77
	14000	0.0075	93
	17000	0.0120	88

	磁场强度 /(A·m^-1)	磁化后的结垢量G_m/g	抑垢率/%
循环一个月循环水	5000	0.0387	62
	8000	0.0295	71
	11000	0.0142	86
	14000	0.0040	96
	17000	0.0061	94
循环两个月循环水	5000	0.0395	61
	8000	0.0360	65
	11000	0.0190	81
	14000	0.0061	94
	17000	0.0091	91
循环三个月循环水	5000	0.0423	59
	8000	0.0381	63
	11000	0.0230	77
	14000	0.0075	93
	17000	0.0120	88

	PC2566型阻垢剂质量浓度 /(mg·L^-1)	投加阻垢剂的结垢量G_m/g	抑垢率/%	YC2655型阻垢剂质量浓度 /(mg·L^-1)	投加阻垢剂的结垢量G_m/g	抑垢率/%	YL505型阻垢剂质量浓度 /(mg·L^-1)	投加阻垢剂的结垢量G_m/g	抑垢率/%
循环一个月循环水	0.10	0.0510	50	0.10	0.0493	52	0.10	0.0500	51
	0.15	0.0377	63	0.15	0.0308	70	0.15	0.0337	75
	0.20	0.0265	62	0.20	0.0208	80	0.20	0.0255	67
	0.25	0.0388	74	0.25	0.0361	65	0.25	0.0377	63
	0.30	0.0500	51	0.30	0.0475	53	0.30	0.0490	52
循环两个月循环水	0.10	0.0612	40	0.10	0.0561	45	0.10	0.0592	42
	0.15	0.0490	52	0.15	0.0449	56	0.15	0.0469	67
	0.20	0.0367	51	0.20	0.0316	69	0.20	0.0337	54
	0.25	0.0500	64	0.25	0.0490	52	0.25	0.0490	52
	0.30	0.0551	46	0.30	0.0541	47	0.30	0.0551	46
循环三个月循环水	0.10	0.0714	30	0.10	0.0663	35	0.10	0.0694	32
	0.15	0.0581	43	0.15	0.0541	47	0.15	0.0561	56
	0.20	0.0469	41	0.20	0.0428	58	0.20	0.0449	45
	0.25	0.0602	54	0.25	0.0581	43	0.25	0.0602	41
	0.30	0.0694	32	0.30	0.0632	38	0.30	0.0653	36

	PC2566型阻垢剂质量浓度 /(mg·L^-1)	投加阻垢剂的结垢量G_m/g	抑垢率/%	YC2655型阻垢剂质量浓度 /(mg·L^-1)	投加阻垢剂的结垢量G_m/g	抑垢率/%	YL505型阻垢剂质量浓度 /(mg·L^-1)	投加阻垢剂的结垢量G_m/g	抑垢率/%
循环一个月循环水	0.10	0.0510	50	0.10	0.0493	52	0.10	0.0500	51
	0.15	0.0377	63	0.15	0.0308	70	0.15	0.0337	75
	0.20	0.0265	62	0.20	0.0208	80	0.20	0.0255	67
	0.25	0.0388	74	0.25	0.0361	65	0.25	0.0377	63
	0.30	0.0500	51	0.30	0.0475	53	0.30	0.0490	52
循环两个月循环水	0.10	0.0612	40	0.10	0.0561	45	0.10	0.0592	42
	0.15	0.0490	52	0.15	0.0449	56	0.15	0.0469	67
	0.20	0.0367	51	0.20	0.0316	69	0.20	0.0337	54
	0.25	0.0500	64	0.25	0.0490	52	0.25	0.0490	52
	0.30	0.0551	46	0.30	0.0541	47	0.30	0.0551	46
循环三个月循环水	0.10	0.0714	30	0.10	0.0663	35	0.10	0.0694	32
	0.15	0.0581	43	0.15	0.0541	47	0.15	0.0561	56
	0.20	0.0469	41	0.20	0.0428	58	0.20	0.0449	45
	0.25	0.0602	54	0.25	0.0581	43	0.25	0.0602	41
	0.30	0.0694	32	0.30	0.0632	38	0.30	0.0653	36

天数/d	原水样电导率 /(ms·cm^-1)	磁化处理后水样电导率 /(ms·cm^-1)	投加阻垢剂后水样电导率 /(ms·cm^-1)	原水样pH	磁化处理后水样pH	投加阻垢剂后水样pH
1	5.69	5.69	5.69	8.18	8.18	8.18
2	5.72	5.71	5.71	8.26	8.24	8.25
3	5.75	5.74	5.72	8.34	8.30	8.26
4	5.77	5.74	5.73	8.42	8.30	8.30
5	5.79	5.74	5.75	8.50	8.30	8.31
6	5.81	5.74	5.75	8.56	8.30	8.31
7	5.83	5.75	5.76	8.61	8.31	8.34
8	5.85	5.74	5.75	8.66	8.30	8.31
9	5.85	5.74	5.75	8.66	8.30	8.31