SU784909A1

SU784909A1 - Method of regeneration of na-cationite filter

Info

Publication number: SU784909A1
Application number: SU782652927A
Authority: SU
Inventors: Камал Михман Абдуллаев; Игорь Александрович Малахов; Леонид Николаевич Полетаев; Юсиф Мусеиб Керимов; Бахши Расул Расулов
Original assignee: Азербайджанский институт нефти и химии им. М.Азизбекова
Priority date: 1978-06-20
Filing date: 1978-06-20
Publication date: 1980-12-07

Description

Изобретение относится к технике обработки природных и сточных вод и . может быть использовано в теплоэнергетике при подготовке питательной воды котлов. ⁵ The invention relates to techniques for the treatment of natural and wastewater can be used in the power industry in the preparation of boiler feed water. ⁵

Известен способ регенерации Na-катионитных фильтров пропусканием всего объема регенеранта (природной минерализованной воды) сверху вниз [1].A known method of regeneration of Na-cation exchange filters by passing the entire volume of the regenerant (natural mineralized water) from top to bottom [1].

Недостатками этого способа являются неудовлетворительное качество очищенной воды, низкая емкость поглощения отрегенерированного катионита и продолжительность регенерации.The disadvantages of this method are the unsatisfactory quality of the purified water, the low absorption capacity of the regenerated cation exchange resin and the duration of the regeneration.

Наиболее близким по технической 15 сущности и достигаемому результату является способ регенерации Na-катионитных фильтров путем пропускания регенерационного раствора одновременно снизу и сверху встречными потоками с выводом отработанного регенеранта через среднюю дренажную систему [2].The closest in technical essence and achieved result is a method of regeneration of Na-cation exchange filters by passing regeneration solution simultaneously from above and below in counter flows with the outlet of spent regenerant through the middle drainage system [2].

Известный способ, хотя и сокращает время регенерации, однако не позволят 25 ет получить высокую степень регенерации при использовании для регенерации природной минерализованной воды.The known method, although it reduces the regeneration time, however, will not allow 25 em to obtain a high degree of regeneration when used for the regeneration of natural mineralized water.

Целью изобретения-является повышение степени регенерации. 30The aim of the invention is to increase the degree of regeneration. thirty

Поставленная цель достигается описываемым способом регенерации Na-катионитных фильтров, заключающимся в пропускании регенерационного раствора одновременно снизу и сверху встреч ными потоками с выводом отработанного регенеранта через среднюю дренажную систему, при этом регенерацию ведут минерализованными природными водами, взятыми в количестве, обеспечивающем состояние равновесия катионита с раствором, с последующим взрыхлением отре• генерированного катионита, причем расход минерализованной воды на регенерацию составляет 14-20 м ⁸/м-3 катионита, и взрыхление ведут природными мине ралиэованными водами.The goal is achieved by the described method of regeneration of Na-cation exchange filters, which consists in passing the regeneration solution simultaneously from above and below in opposite directions with the outlet of the spent regenerant through the middle drainage system, while regeneration is carried out by mineralized natural waters taken in an amount that ensures the state of equilibrium of cation exchange resin with the solution followed by backwash otre • generated cation exchanger, wherein the flow of brine for regeneration is 14-20 m ⁸ / -3 cation exchanger, and backwashing are natural ralieovannymi mine waters.

Отличительными признаками способаDistinctive features of the method

2& являются проведение регенерации природными минерализованными водами, взя-. тыми ή количестве, обеспечивающем состояние равновесия катионита с раствором, и последующее взрыхление отрегенерированного катионита. Другое отличие состоит в том, что расход минерализованной природной воды составляет 14-20 м^в/м3 катионита, а также в том, что взрыхление ведут природными минерализованными водами.2 & are carrying out the regeneration of natural mineralized waters, taken-. ή the amount ensuring the equilibrium state of cation exchange resin with the solution, and the subsequent loosening of the regenerated cation exchange resin. Another difference is that the flow mineralized natural water is 14-20 ^m / m 3 cation exchanger, and in that backwashing are natural mineral waters.

Расход минерализованной природной воды 14-20 m'Vm ^катионита является оптимальным, так как при расходе меньше 14 м Э/м3 катионита ухудшается качество умягченной воды, а при расходе 20 мЗ/м 3 катионита уже достигается состояние равновесия катионита с регенерационным раствором.The consumption of mineralized natural water of 14-20 m'Vm ^ of cation exchanger is optimal, since the quality of softened water deteriorates at a flow rate of less than 14 m E / m3 of cation exchanger, and at a flow rate of 20 m3 / m 3 cation exchanger, the equilibrium state of cation exchanger with the regeneration solution is already achieved.

Пример. Истощенный катионит Ку-2 в количестве 0,14 л загружают в стеклянную трубку диаметром 25 мм., Для регенерации истощенного катионита' используют природную минерализованную воду, например воду океана, содержащую, мг-ЭКв/кг: Na* 465; К* 10; Са 22,5; Мд²·* 108,5. Скорость пропускания регенерата составляет 20 м/час. Расход океанской воды на регенерацию катионита составляет 5, 10 и 20 м’/м^? катионита.Example. The depleted Ku-2 cation exchanger in the amount of 0.14 L is loaded into a glass tube with a diameter of 25 mm. To regenerate the depleted cation exchanger 'use natural mineralized water, for example, ocean water containing, mg-Equ / kg: Na * 465; K * 10; Ca 22.5; Md ² * * 108.5. The regenerate transmission rate is 20 m / h. The flow of ocean water for the regeneration of cation exchanger is 5, 10 and 20 m '/ m ^? cation exchanger.

Данные по умягчению воды к&тиони' тами после регенерации представлены в 20 таблице.The data on water softening by k & thionites after regeneration are presented in Table 20.

Показатели умягчения Softening indicators Расход регенеранта — океанской вода Regenerant Consumption - Ocean Water 5 м% 5 m% 10 м³/м³ 10 m ³ / m ³ До состоя ния равно Лесия .20 м^/мЗ Before the state, it is equal to Lesia .20 m ^ / mZ Удельный Объем умягченной вода 110 Specific Volume softened water 110 125 125 165 165 Среднее за фильтроцикл остаточное содержание Са²±+ Мд²⁺в фильтра-: те, йгк-экв/лThe average per filter cycle residual content of Ca ² ± + MD ²⁺ in the filter: those, ngk-eq / l 90 90 75 75 30 thirty

Использование предлагаемого способа регенерации Na-катионитных фильтров обеспечивает по сравнению с существующими способами следующие преимущества: максимально возможную степень регенерации катионита природной минерализованной водой, сокращение расхода воды на собственные нужды химводоочистки, уменьшение продолжительности регенерации.Using the proposed method for the regeneration of Na-cation exchange filters provides the following advantages compared to existing methods: the maximum possible degree of regeneration of the cation exchange resin by natural mineralized water, reducing the flow of water for its own needs of chemical water treatment, and reducing the duration of regeneration.

Claims

This invention relates to natural and sewage treatment equipment and. can be used in heat and power engineering in the preparation of boiler feedwater. The known method of regenerating Na-cation-exchange filters by passing the entire volume of regeerant (natural saline water) from top to bottom 1. The disadvantages of this method are the poor quality of purified water, low absorption capacity of the regenerated cation exchanger and the duration of regeneration. The closest in technical sudnosti and the achieved result is a method of regeneration of Na-cationic filters by passing the regeneration solution simultaneously from the bottom and top of the counter-flow with the conclusion of the spent regenerant through the average drainage system 2. The known method, although it shortens the regeneration time, but does not allow to obtain a high degree of regeneration by using natural mineralized water for regeneration. The aim of the invention is to increase regeneration. The goal is achieved by the described method of regeneration of Na-cation-exchange filters, which consist in passing the regeneration solution simultaneously from below and above by counter-flowing streams with the output of the spent regenerant through the average drainage system, while the regeneration is carried out with mineralized natural waters, taken in an amount providing an equilibrium state of cationite solution, with the subsequent loosening of the regenerated cation exchanger, and the consumption of saline water for regeneration is 14-20 ationita and backwashing are natural mineral waters. Distinctive features of the method are the regeneration of natural mineralized waters, aside. the amount of equilibrium of the cation exchanger with the solution, and the subsequent loosening of the regenerated cation exchanger. Another difference is that the flow of mineralized natural water is 14–20 MVM of cation exchanger, as well as in the fact that loosening is carried out by natural mineralized waters. The consumption of saline natural water of 14–20 cation exchangers is optimal, since at a flow rate of less than 14 mE / m of cation exchanger, the quality of softened water deteriorates, and at a flow rate of 20 mVM of cation exchanger, the state of equilibrium of the cation exchanger with regeneration solution is already reached. Example. A depleted Ku-2 cation exchanger in an amount of 0.14 L is loaded into a glass tube with a diameter of 25 mm. For regeneration of depleted cation exchanger, natural mineralized water is used, for example, ocean water containing, mEq / kg: Na- 465; ,five; Eid 108.5. The regenerate transmission rate is 20 m / h. The consumption of ocean water for the regeneration of the cation exchanger is 5, 10 and 20 m / m of the cation exchanger. Data on water softening to & tionite after regeneration are presented in the table. Specific volume of raw water 110 125 Average for filter cycle residual Mg2 content. + In the filter-: those ygk-sqv / l 90 75 Using the proposed method for regenerating Na-cation-exchange filters provides the following advantages compared to existing methods: the maximum possible degree of regeneration of the cation exchanger natural mineralized water, reduction of water consumption for own needs of chemical water treatment, reduction of regeneration time. Claim 1. A method of regenerating Na-cationite filters by passing a regeneration solution simultaneously from the bottom and from above by counter flows with the conclusion of the spent regenerant through an average drainage system, characterized in that, with the aim of increasing the degree of regeneration, the latter are led by natural mineralized waters taken in an amount ensuring the equilibrium state of the cation exchanger with the solution, followed by loosening of the regenerated cation exchanger. 2. Method POP1, characterized in that the consumption of natural water (Mineralized water for regeneration is 14-20 cation exchangers. 3. Method according to claim 1, 1, about 20 and c and with the fact that loosening is carried out by natural mineralized waters. Sources of information taken into account during the examination 1. Meschersky N. A. Sb. Desalination and desalination of water. M., 1976, p.59.

2. USSR author's certificate according to application no. 2555441, cl. B 01 J 1/09, C 02 B 1/76, 16.12.77.