胡艷華等
摘要:通過(guò)靜態(tài)容量瓶法研究了不同鈣堿水質(zhì)條件下,磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性及Zn2+、Ca2+和堿度之間的關(guān)系。結(jié)果發(fā)現(xiàn):鈣堿濃度的變化對(duì)磺酸鹽共聚物穩(wěn)定Zn2+的性能影響較大,Ca2+濃度為600~800mg/L是磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性的拐點(diǎn),Ca2+濃度低于600mg/L時(shí),磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性較好,此時(shí)堿度為主要影響因素,應(yīng)重點(diǎn)控制水中的堿度;Ca2+濃度高于800mg/L時(shí),磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性較差,應(yīng)該開(kāi)發(fā)高鈣條件下專用的穩(wěn)鋅聚合物。
關(guān)鍵詞:磺酸鹽共聚物;Ca2+;Zn2+;堿度;穩(wěn)定性
1引言
在循環(huán)冷卻水系統(tǒng)中,主要存在結(jié)垢、腐蝕和微生物危害三方面問(wèn)題。Ca2+和堿度是影響循環(huán)水結(jié)垢和腐蝕的關(guān)鍵因子,通常情況下,可以根據(jù)Ca2+、堿度和濃縮倍數(shù)判斷循環(huán)水的腐蝕和結(jié)垢的傾向。為防止系統(tǒng)結(jié)垢和腐蝕最方便且有效的方法是在循環(huán)冷卻水中投加緩蝕阻垢劑。實(shí)際應(yīng)用中常把鋅鹽與其他緩蝕阻垢劑復(fù)配成復(fù)合緩蝕阻垢劑使用。鋅鹽在堿性水中會(huì)生成絮狀氫氧化鋅沉淀而失效,甚至粘附在傳熱面上成為垢[1]。一般通過(guò)投加磺酸鹽共聚物來(lái)穩(wěn)定鋅鹽[2~4],不同廠家的磺酸鹽共聚物由于單體種類及配比不同,性能有所不同。實(shí)驗(yàn)室通常是在鈣堿均為250mg/L條件下評(píng)價(jià)磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性能,而高硬高堿水質(zhì)采用的加酸工藝中Ca2+濃度一般超過(guò)600mg/L,甚至達(dá)到1500mg/L,中硬中堿水質(zhì)不調(diào)pH值自然運(yùn)行工藝中堿度通常會(huì)超過(guò)250mg/L,這就導(dǎo)致實(shí)驗(yàn)室條件和實(shí)際運(yùn)行時(shí)的工況不一致,其評(píng)價(jià)結(jié)果能否反應(yīng)實(shí)際狀況值得推敲。因此本文研究了在不同的Ca2+含量和堿度條件下,磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性能,目的是找到一些規(guī)律,為配方選擇及現(xiàn)場(chǎng)應(yīng)用提供借鑒。
參考文獻(xiàn):
[1] 葉玉文水處理化學(xué)品[M]北京:化學(xué)工業(yè)出版社,2006
[2] 王恩良含磷AA/AMPS共聚物的合成及阻垢性能研究[J]工業(yè)水處理,2003,23(3):52~53;64
[3] 董銀卯,張桂芳,徐理阮新型阻垢劑MA/AA/AMPS/NaH2PO2共聚物的合成和性能研究[J]化學(xué)試劑,2001,23(6):321~324,348
[4] 唐清華,郭振良,阮文舉AA-MAA-AMPS三元共聚物的合成及其阻垢分散性能[J]煙臺(tái)師范學(xué)院學(xué)報(bào):自然科學(xué)版,2004,20(3):212~214
Abstract:By the static flask methodthis article studiesthe stability to Zn2+ of the sulphonate copolymerin the water quality conditions with the different Ca2+ concentration and alkalinityThe results show that the effects of Ca2+ concentration and alkalinity on the stability to Zn2+ of the sulphonate copolymer are lagerWhen Ca2+ concentration is 600mg/L-800mg/L,it is the inflection point of the stability to PO3-4 of the sulphonate copolymerWhen Ca2+ concentration is below 600mg/L,the stability to PO3-4 of the sulphonate copolymer is betterDuring this moment,the alkalinity is the maininfluencefactorWe should control the alkalinity inthe circulating cooling watermainlyWhen Ca2+ concentration is higher than 800mg/L,the stability to PO3-4 of the sulphonate copolymer is poorDuring this moment,the special polymer to PO3-4 under the high-calcium water quality conditions need be developed
Key words:sulphonate copolymer;Ca2+;Zn2+;alkalinity;stabilityendprint
摘要:通過(guò)靜態(tài)容量瓶法研究了不同鈣堿水質(zhì)條件下,磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性及Zn2+、Ca2+和堿度之間的關(guān)系。結(jié)果發(fā)現(xiàn):鈣堿濃度的變化對(duì)磺酸鹽共聚物穩(wěn)定Zn2+的性能影響較大,Ca2+濃度為600~800mg/L是磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性的拐點(diǎn),Ca2+濃度低于600mg/L時(shí),磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性較好,此時(shí)堿度為主要影響因素,應(yīng)重點(diǎn)控制水中的堿度;Ca2+濃度高于800mg/L時(shí),磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性較差,應(yīng)該開(kāi)發(fā)高鈣條件下專用的穩(wěn)鋅聚合物。
關(guān)鍵詞:磺酸鹽共聚物;Ca2+;Zn2+;堿度;穩(wěn)定性
1引言
在循環(huán)冷卻水系統(tǒng)中,主要存在結(jié)垢、腐蝕和微生物危害三方面問(wèn)題。Ca2+和堿度是影響循環(huán)水結(jié)垢和腐蝕的關(guān)鍵因子,通常情況下,可以根據(jù)Ca2+、堿度和濃縮倍數(shù)判斷循環(huán)水的腐蝕和結(jié)垢的傾向。為防止系統(tǒng)結(jié)垢和腐蝕最方便且有效的方法是在循環(huán)冷卻水中投加緩蝕阻垢劑。實(shí)際應(yīng)用中常把鋅鹽與其他緩蝕阻垢劑復(fù)配成復(fù)合緩蝕阻垢劑使用。鋅鹽在堿性水中會(huì)生成絮狀氫氧化鋅沉淀而失效,甚至粘附在傳熱面上成為垢[1]。一般通過(guò)投加磺酸鹽共聚物來(lái)穩(wěn)定鋅鹽[2~4],不同廠家的磺酸鹽共聚物由于單體種類及配比不同,性能有所不同。實(shí)驗(yàn)室通常是在鈣堿均為250mg/L條件下評(píng)價(jià)磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性能,而高硬高堿水質(zhì)采用的加酸工藝中Ca2+濃度一般超過(guò)600mg/L,甚至達(dá)到1500mg/L,中硬中堿水質(zhì)不調(diào)pH值自然運(yùn)行工藝中堿度通常會(huì)超過(guò)250mg/L,這就導(dǎo)致實(shí)驗(yàn)室條件和實(shí)際運(yùn)行時(shí)的工況不一致,其評(píng)價(jià)結(jié)果能否反應(yīng)實(shí)際狀況值得推敲。因此本文研究了在不同的Ca2+含量和堿度條件下,磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性能,目的是找到一些規(guī)律,為配方選擇及現(xiàn)場(chǎng)應(yīng)用提供借鑒。
參考文獻(xiàn):
[1] 葉玉文水處理化學(xué)品[M]北京:化學(xué)工業(yè)出版社,2006
[2] 王恩良含磷AA/AMPS共聚物的合成及阻垢性能研究[J]工業(yè)水處理,2003,23(3):52~53;64
[3] 董銀卯,張桂芳,徐理阮新型阻垢劑MA/AA/AMPS/NaH2PO2共聚物的合成和性能研究[J]化學(xué)試劑,2001,23(6):321~324,348
[4] 唐清華,郭振良,阮文舉AA-MAA-AMPS三元共聚物的合成及其阻垢分散性能[J]煙臺(tái)師范學(xué)院學(xué)報(bào):自然科學(xué)版,2004,20(3):212~214
Abstract:By the static flask methodthis article studiesthe stability to Zn2+ of the sulphonate copolymerin the water quality conditions with the different Ca2+ concentration and alkalinityThe results show that the effects of Ca2+ concentration and alkalinity on the stability to Zn2+ of the sulphonate copolymer are lagerWhen Ca2+ concentration is 600mg/L-800mg/L,it is the inflection point of the stability to PO3-4 of the sulphonate copolymerWhen Ca2+ concentration is below 600mg/L,the stability to PO3-4 of the sulphonate copolymer is betterDuring this moment,the alkalinity is the maininfluencefactorWe should control the alkalinity inthe circulating cooling watermainlyWhen Ca2+ concentration is higher than 800mg/L,the stability to PO3-4 of the sulphonate copolymer is poorDuring this moment,the special polymer to PO3-4 under the high-calcium water quality conditions need be developed
Key words:sulphonate copolymer;Ca2+;Zn2+;alkalinity;stabilityendprint
摘要:通過(guò)靜態(tài)容量瓶法研究了不同鈣堿水質(zhì)條件下,磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性及Zn2+、Ca2+和堿度之間的關(guān)系。結(jié)果發(fā)現(xiàn):鈣堿濃度的變化對(duì)磺酸鹽共聚物穩(wěn)定Zn2+的性能影響較大,Ca2+濃度為600~800mg/L是磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性的拐點(diǎn),Ca2+濃度低于600mg/L時(shí),磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性較好,此時(shí)堿度為主要影響因素,應(yīng)重點(diǎn)控制水中的堿度;Ca2+濃度高于800mg/L時(shí),磺酸鹽共聚物對(duì)Zn2+穩(wěn)定性較差,應(yīng)該開(kāi)發(fā)高鈣條件下專用的穩(wěn)鋅聚合物。
關(guān)鍵詞:磺酸鹽共聚物;Ca2+;Zn2+;堿度;穩(wěn)定性
1引言
在循環(huán)冷卻水系統(tǒng)中,主要存在結(jié)垢、腐蝕和微生物危害三方面問(wèn)題。Ca2+和堿度是影響循環(huán)水結(jié)垢和腐蝕的關(guān)鍵因子,通常情況下,可以根據(jù)Ca2+、堿度和濃縮倍數(shù)判斷循環(huán)水的腐蝕和結(jié)垢的傾向。為防止系統(tǒng)結(jié)垢和腐蝕最方便且有效的方法是在循環(huán)冷卻水中投加緩蝕阻垢劑。實(shí)際應(yīng)用中常把鋅鹽與其他緩蝕阻垢劑復(fù)配成復(fù)合緩蝕阻垢劑使用。鋅鹽在堿性水中會(huì)生成絮狀氫氧化鋅沉淀而失效,甚至粘附在傳熱面上成為垢[1]。一般通過(guò)投加磺酸鹽共聚物來(lái)穩(wěn)定鋅鹽[2~4],不同廠家的磺酸鹽共聚物由于單體種類及配比不同,性能有所不同。實(shí)驗(yàn)室通常是在鈣堿均為250mg/L條件下評(píng)價(jià)磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性能,而高硬高堿水質(zhì)采用的加酸工藝中Ca2+濃度一般超過(guò)600mg/L,甚至達(dá)到1500mg/L,中硬中堿水質(zhì)不調(diào)pH值自然運(yùn)行工藝中堿度通常會(huì)超過(guò)250mg/L,這就導(dǎo)致實(shí)驗(yàn)室條件和實(shí)際運(yùn)行時(shí)的工況不一致,其評(píng)價(jià)結(jié)果能否反應(yīng)實(shí)際狀況值得推敲。因此本文研究了在不同的Ca2+含量和堿度條件下,磺酸鹽共聚物對(duì)Zn2+的穩(wěn)定性能,目的是找到一些規(guī)律,為配方選擇及現(xiàn)場(chǎng)應(yīng)用提供借鑒。
參考文獻(xiàn):
[1] 葉玉文水處理化學(xué)品[M]北京:化學(xué)工業(yè)出版社,2006
[2] 王恩良含磷AA/AMPS共聚物的合成及阻垢性能研究[J]工業(yè)水處理,2003,23(3):52~53;64
[3] 董銀卯,張桂芳,徐理阮新型阻垢劑MA/AA/AMPS/NaH2PO2共聚物的合成和性能研究[J]化學(xué)試劑,2001,23(6):321~324,348
[4] 唐清華,郭振良,阮文舉AA-MAA-AMPS三元共聚物的合成及其阻垢分散性能[J]煙臺(tái)師范學(xué)院學(xué)報(bào):自然科學(xué)版,2004,20(3):212~214
Abstract:By the static flask methodthis article studiesthe stability to Zn2+ of the sulphonate copolymerin the water quality conditions with the different Ca2+ concentration and alkalinityThe results show that the effects of Ca2+ concentration and alkalinity on the stability to Zn2+ of the sulphonate copolymer are lagerWhen Ca2+ concentration is 600mg/L-800mg/L,it is the inflection point of the stability to PO3-4 of the sulphonate copolymerWhen Ca2+ concentration is below 600mg/L,the stability to PO3-4 of the sulphonate copolymer is betterDuring this moment,the alkalinity is the maininfluencefactorWe should control the alkalinity inthe circulating cooling watermainlyWhen Ca2+ concentration is higher than 800mg/L,the stability to PO3-4 of the sulphonate copolymer is poorDuring this moment,the special polymer to PO3-4 under the high-calcium water quality conditions need be developed
Key words:sulphonate copolymer;Ca2+;Zn2+;alkalinity;stabilityendprint