Chemical cleaning agent and cleaning method for natural gas water jacket heating furnace
A water jacket heating furnace and natural gas technology, applied in the field of chemical cleaning agents, can solve the problem of 3-5mm coil scaling, achieve safe cleaning, ensure safe and stable operation, and prolong the service life
Active Publication Date: 2018-11-16
PETROCHINA CO LTD
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Problems solved by technology
For example, the water-jacketed heating furnace currently used in the gas field uses water as the medium for coil heating and heat exchange for heat exchange, and regularly uses untreated deep well water to replenish water for the water-jacketed heating furnace, which is carried out about once every six months In addition, the water does not circulate in the heating furnace. After 4 years of operation of such a natural gas water jacket heating furnace, there will be a phenomenon of 3-5mm coil scaling
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Embodiment 1
[0059] Present embodiment at first provides a kind of chemical cleaning agent for natural gas water jacket heating furnace, with 15m 3 Calculate the furnace volume, which includes:
[0060] 2kg of hydrochloric acid with a concentration of 30wt%, 5kg of urotropine, 15kg of citric acid with a concentration of 50wt%, descaling and softening agent (4kg of urotropine, 6kg of formaldehyde and aniline condensate).
[0061] This embodiment also provides a cleaning method for a natural gas water jacket heating furnace using the above-mentioned chemical cleaning agent for a natural gas water jacket heating furnace, which specifically includes the following steps:
[0062] Step 1: add urotropine 5kg in the natural gas water jacket heating furnace, leave standstill 15min, add concentration and be 30wt% hydrochloric acid 2kg, concentration be 50wt% citric acid 15kg and descaling softening agent (hexaamine 4kg, Formaldehyde and aniline condensate 6kg), soak for 2h;
[0063] Step 2: add 40...
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The invention provides a chemical cleaning agent for a natural gas water jacket heating furnace and a cleaning method. The chemical cleaning agent for the natural gas water jacket heating furnace is composed of urotropine, hydrochloric acid with the concentration being 25 wt%-30 wt%, citric acid with the concentration being 40 wt%-50 wt%, and a descaling softener, wherein the mass ratio of the urotropine, the hydrochloric acid , the citric acid and the descaling softener is 2:5:15:6-4:9:28:13. The descaling softener comprises urotropine and a condensation compound of methanol and aniline, wherein the mass ratio of the urotropine and the condensation compound is 2:3-3:8. The invention further provides the cleaning method using the chemical cleaning agent for the natural gas water jacket heating furnace and the natural gas water jacket heating furnace provided with chemical cleaning agent conveying equipment. The chemical cleaning agent for the natural gas water jacket heating furnace is a chemical cleaning agent capable of effectively cleaning dirt in a furnace body of the natural gas water jacket heating furnace.
Description
technical field [0001] The invention relates to a chemical cleaning agent and a cleaning method, in particular to a chemical cleaning agent and a cleaning method for a natural gas water jacket heating furnace, and belongs to the technical field of chemical cleaning agents. Background technique [0002] The water jacket heating furnace is a special equipment widely used in the natural gas transmission system. It has the characteristics of various types, various configurations, compact structure, complete functions and wide application range. It is an ideal heating equipment in the natural gas transmission system. [0003] At present, the multi-well negative pressure natural gas water jacket heating furnace used in the field of gas fields has the disadvantages of serious scaling and short service life, mainly due to: [0004] The particularity of the medium in the coil of the heating furnace, and because the natural gas heating furnace is an outdoor device, its water inlet is ...
Claims
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Login to View More IPC IPC(8): C23G1/06C02F5/12
Inventor 洪鸿李莲明李强刘帮华马春稳黄雪萍韩东兴王磊马鹏飞安维杰王霞
Owner PETROCHINA CO LTD