hot water boiler for centralized heat supplying system

In late May 2018, Hedong District, Tianjin Environmental Protection Bureau, the District Construction Committee, District Bureau for approval jointly held low nitrogen gas boiler reconstruction work will push for the Municipal Environmental Protection Bureau atmosphere at the meeting of May 18 Air pollution control work in progress briefing involves the transformation of low nitrogen gas boiler, convey the contents of the meeting and introduced the progress of work and experience low nitrogen gas boiler reconstruction of other counties.

Clear four key tasks meeting: First, all gas boiler units must be in accordance with the time node, complete technical solutions before the end of May to develop and expert appraisal work;

Second, according to the requirements of the minutes of the 49th executive meeting of the district government, the units shall, not later project work next week to start the project, and accelerating project bidding, project construction to ensure completion before the end of September;

Third, the units should seriously accordance with the "Municipal Environmental Protection Bureau of Finance on the issuance of Tianjin Gas boiler low nitrogen fixed subsidy reconstruction project implementation approach" (environmentally friendly gas-chun [2017] No. 171), "on the issuance of Tianjin Municipal Environmental Protection Bureau letter fixed subsidy acceptance requirements of low nitrogen gas boiler reconstruction project "(Tianjin environmental Protection memo No. [2017] 406) and" Municipal environmental Protection Bureau Municipal market supervision Commission letter of relevant work requirements transformation of low nitrogen gas boiler "(Jin Han [green gas the relevant procedures 2018] No. 92) requirements, preparing project application and acceptance, with particular attention to security issues in the process of transformation of the project, to ensure that emissions meet the standard requirements after the transformation;

Second, the heating area

When buildings heating, heating area is also one of the issues to be considered, the size of the heating area directly affects the choice of boiler capacity. "Urban heating network design" is recommended for heating heat index of:

You have to know the boiler energy consumption (main steam temperature solve the problem) main steam temperature problem-solving measures 1 boiler operation 1.1AGC control measures to closely monitor fluctuations in the amount of coal, the fuel surge slashed the emergence of the subject Save heated conditioned manual intervention. 1.2 artificially adjusting the load, increase or decrease the amount of coal can not be too large. 1.3 adjusted to optimize the combustion tests, the optimum value of oxygen boiler, the boiler properly regulate the amount of oxygen. 1.4 put into operation the burner adjustment mode, by adjusting ensure that the main steam temperature combustion boiler. 1.5 normal temperature control into the main steam boiler. 1.6 intense monitoring segments superheater steam temperature, steam temperature adjustment for adjusting so that ground, the fine reduced spray desuperheater water, controlling the main steam temperature. 1.7 Test mastered by pulverizing system operation changes the influence of the main steam temperature, analyze the causes and make predictable adjustments. 1.8 rational for sootblowing heating surface. 1.9 stratified fuel amount adjustment, reasonable control center of the flame, adjust a secondary air ratio, the excess air ratio changing, if necessary. 2 routine maintenance and testing 2.1 combustion adjustment experiment to determine the best mode of operation and control parameters boilers. 2.2 improve the quality of automatically adjusting the main steam temperature. 2.3 to detect and analyze the reasons offset the center of the furnace flame occurs, and take specific measures. 3 3.1 eliminate downtime desuperheating water leak phenomenon each valve. 3.2 heating surface power, clean fouling. 3.3 dredge preheater, treatment of flue leakage. 4 4.1 pairs of respective transformation means within the steam separator drum for cleaning up, and remove related defects. 4.2 pairs of waterwall, economizer, reheater, superheater tube cutting, scaling internal corrosion test cases. 4.3 heating surface slagging, fouling cleaning. 4.4 due to equipment problems reheat steam parameters less than the design value, or burner heating surface transformation.

stop the boiler to dry it :

2 hours before the boiler stoped,with the help of water supplying system and medicament system, the fireman add ammonia to the boiler to increase the PH value and ammonia concentration. In this way, a protection membrane will be formed in the boiler with which the corrosion caused by the boiler water will reduce during the idle time.

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