SU464773A1 - The method of cleaning the surface from calcium sulfate deposits - Google Patents

The method of cleaning the surface from calcium sulfate deposits

Info

Publication number
SU464773A1
SU464773A1 SU1964709A SU1964709A SU464773A1 SU 464773 A1 SU464773 A1 SU 464773A1 SU 1964709 A SU1964709 A SU 1964709A SU 1964709 A SU1964709 A SU 1964709A SU 464773 A1 SU464773 A1 SU 464773A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cleaning
calcium sulfate
sulfate deposits
solution
deposits
Prior art date
Application number
SU1964709A
Other languages
Russian (ru)
Inventor
Эдуард Михайлович Миткевич
Владимир Николаевич Корованов
Валентина Павловна Никулина
Виталий Тимофеевич Мороз
Вера Юрьевна Бабкина
Владимир Иванович Корецкий
Original Assignee
Предприятие П/Я А-3732
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-3732 filed Critical Предприятие П/Я А-3732
Priority to SU1964709A priority Critical patent/SU464773A1/en
Application granted granted Critical
Publication of SU464773A1 publication Critical patent/SU464773A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions

Description

1one

Изобретение относитс  к способам очистки поверхностей и может найти применение в различных отрасл х народного хоз йства.The invention relates to methods for cleaning surfaces and can be used in various sectors of the national economy.

Известны способы очистки поверхности от отложений сульфата кальци  путем промывки ее раствором минеральной кислоты.Methods are known for cleaning the surface of calcium sulfate deposits by washing it with a solution of mineral acid.

Предложенный способ отличаетс  от известного тем, что в процессе очистки в раствор кислоты ввод т растворимую соль бари . - Это позвол ет повысить эффективность очистки .The proposed method differs from that in that, during the purification process, a soluble barium salt is introduced into the acid solution. “This allows for improved cleaning efficiency.”

Способ осуществл ют следующим образом.The method is carried out as follows.

Промывку поверхности, на которой имеютс  отложени  сульфата кальци , начинают раствором минеральной кислоты, например сол ной или азотной. Через определенное врем , например через 1 час, аналитически определ ют скорость поступлени  сульфат-ионов в промывочный раствор. По количеству поступающего в единицу времени в раствор сульфат-иона в промывочный раствор дозируют растворимую соль бари , например хлористый барий, предпочтительно с недостатком по отнощению к количеству, стехиометрически необходимому дл  осаждени  этого количества сульфат-иона.The washing of the surface on which calcium sulfate deposits are formed is started with a solution of a mineral acid, for example hydrochloric or nitric acid. After a certain time, for example, after 1 hour, the rate at which the sulfate ions enter the wash solution is analytically determined. A soluble barium salt, such as barium chloride, is preferably metered into the washing solution according to the amount of sulfate ion entering the unit of time, preferably with a disadvantage relative to the amount stoichiometrically necessary to precipitate this amount of sulfate ion.

Хлористый барий ввод т в раствор кислоты в виде его водного раствора или в виде сол но-кислого раствора.Barium chloride is introduced into the acid solution in its aqueous solution or in the form of a hydrochloric acid solution.

Предмет изобретени Subject invention

Способ очистки поверхности от отложений сульфата кальци  путем промывки ее раствором минеральной кислоты, отличающийс  тем, что, с целью повыщени  эффективности очистки, в процессе очистки в раствор кислоты ввод т растворимую соль бари .The method of cleaning the surface of calcium sulfate deposits by washing it with a mineral acid solution, characterized in that, in order to increase the cleaning efficiency, a soluble barium salt is introduced into the acid solution during the cleaning process.

SU1964709A 1973-10-02 1973-10-02 The method of cleaning the surface from calcium sulfate deposits SU464773A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1964709A SU464773A1 (en) 1973-10-02 1973-10-02 The method of cleaning the surface from calcium sulfate deposits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1964709A SU464773A1 (en) 1973-10-02 1973-10-02 The method of cleaning the surface from calcium sulfate deposits

Publications (1)

Publication Number Publication Date
SU464773A1 true SU464773A1 (en) 1975-03-25

Family

ID=20566118

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1964709A SU464773A1 (en) 1973-10-02 1973-10-02 The method of cleaning the surface from calcium sulfate deposits

Country Status (1)

Country Link
SU (1) SU464773A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692252A (en) * 1986-03-24 1987-09-08 Vertech Treatment Systems, Inc. Method of removing scale from wet oxidation treatment apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692252A (en) * 1986-03-24 1987-09-08 Vertech Treatment Systems, Inc. Method of removing scale from wet oxidation treatment apparatus

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