CN106015064B - The operating method of motor-driven compressor substitution steam driven compressor - Google Patents

The operating method of motor-driven compressor substitution steam driven compressor Download PDF

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Publication number
CN106015064B
CN106015064B CN201610389417.0A CN201610389417A CN106015064B CN 106015064 B CN106015064 B CN 106015064B CN 201610389417 A CN201610389417 A CN 201610389417A CN 106015064 B CN106015064 B CN 106015064B
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Prior art keywords
valve
motor
air
driven compressor
high pressure
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CN106015064A (en
Inventor
郭端华
严勇
汪启富
付国
王莉
税小波
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GUIZHOU CHITIANHUA CO Ltd
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GUIZHOU CHITIANHUA CO Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/16Combinations of two or more pumps ; Producing two or more separate gas flows
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/04Units comprising pumps and their driving means the pump being fluid-driven
    • F04D25/045Units comprising pumps and their driving means the pump being fluid-driven the pump wheel carrying the fluid driving means, e.g. turbine blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/005Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by changing flow path between different stages or between a plurality of compressors; Load distribution between compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/007Conjoint control of two or more different functions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid

Abstract

The invention discloses a kind of operating methods of motor-driven compressor substitution steam driven compressor, it is made of steam driven compressor component and motor-driven compressor component combination, steam driven compressor component include connect production system pipeline and air compressor for pressure pipeline, it is connected with steam turbines and air filter on air compressor, steam control valve is equipped on for pressure pipeline;The motor-driven compressor component with motor-driven compressor being also connected on production system pipeline more than a set of.The present invention replaces steam drive air compressor for air by electrodrive air compressor, reaches the substitution of the energy.It is raw natural gas by original part of fuel gas replacement, promotes the natural gas nitrogen fertilizer plant rate of capacity utilization, to enterprise's reasonable disposition resource, implements energy-saving and emission-reduction, skill upgrading is of great importance, and in industry has important exemplary role.

Description

The operating method of motor-driven compressor substitution steam driven compressor
Technical field
The present invention relates to a kind of motor-driven compressors to substitute steam driven compressor operating method, belongs to natural gas nitrogen Fertile engineering device technique field.
Background technique
Existing using natural gas as the nitrogen enterprise of raw material, many energy and driving are to have combustion of natural gas to become steaming Vapour, then driven by steam, it there is the waste of great unstripped gas, by taking the pressure-air that existing system provides as an example, Pressure-air used in its technique is with process steam driving air compressor for air, though which can save several years ago Cost, but as domestic natural gas shortage and price rise, very big raw material mix is faced by the nitrogen enterprise of raw material of natural gas Pressure is adjusted, to solve the problems, such as energy shortages.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of motor-driven compressor that can save gas material The operating method of steam driven compressor is substituted, with overcome the deficiencies in the prior art.
The technical solution adopted by the present invention:
Motor-driven compressor substitutes the structure of steam driven compressor, it is driven by steam driven compressor component and motor The combination of dynamic pressure compressor parts is constituted, and steam driven compressor component includes the pressure supply for connecting production system pipeline and air compressor Pipeline is connected with steam turbines and air filter on air compressor, and steam control valve is equipped on for pressure pipeline;? A set of above motor-driven compressor component with motor-driven compressor is also connected on production system pipeline.
The structure of above-mentioned motor-driven compressor substitution steam driven compressor is the motor-driven compressor portion Part includes electricity drive air filter, low pressure (LP) cylinder, motor and the high pressure cylinder that supply air line concatenation is driven in electricity consumption, is driven on supply air line in electricity It is connected with the blow-down pipe of high pressure blow valve, is driven in electricity and is connected with the big valve in outlet on supply air line, is equipped with guide vane in low pressure (LP) cylinder import, It is connected with the low pressure (LP) cylinder blow-down pipe with LOW PRESSURE VENT VALVE IN on low pressure (LP) cylinder, is driven in electricity and is connected with the big valve in outlet on supply air line.
The structure of motor-driven compressor substitution steam driven compressor above-mentioned is the motor-driven compressor portion Part is two sets.
Motor-driven compressor substitution steam driven compressor operating method it include the following steps
A, check whether whole system is normal before driving;
B, air-channel system is driven: guide vane, open-width 5% in opening motor-driven compressor component, LOW PRESSURE VENT VALVE IN is closed entirely, High pressure blow valve standard-sized sheet exports big valve and is in close state;
C, unit is driven: starting motor 15s~30s to rated speed, and motor operation starts after five minutes, guide vane is opened greatly To 20%~30%;According to first convincing leaf by patient analysis, then the principle of high pressure blow valve is closed, the unlatching of each guide vane and the closing of high pressure blow valve Amplitude controls within 2%, until high pressure cylinder rate of discharge reaches 25600Nm3/ h, pressure reach 3.65MPa;
D, it opens electrodrive air compressor component and adds air: opening motor, close and export big valve, main valve, air control valve And steam control valve, confirmation pressure flow normally open the emptying of high pressure blow valve afterwards;After chemical industry instruments, slowly open out The big valve of mouth and main valve press high 0.1MPa than system with the outlet pressure of guide vane and high pressure blow valve adjustment high pressure cylinder, open air tune The bypass valve of valve is saved, while should be noted that the variation of catalyst temperature;It gradually opens air control valve and closes the bypass of air control valve Valve turns down high pressure blow valve and adjustment guide vane opening, slowly gradually to control temperature rise rate;To wherein a set of motor driven pressure After the air whole addition system of compressor parts, then gradually slowly turn down the high pressure emptying of another set of motor-driven compressor component Leaf divergence is led in valve and adjustment, until system is all added in the air of another set of motor-driven compressor component;
E, it moves back air: being down to 50% to technical load, gradually reduce the additional amount of air control valve, be gradually opened height and press Empty valve closes guide vane, after the addition of air control valve reduces to 30%, closes air control valve and completes, scene confirmation high pressure emptying Valve regulation gradually opens big high pressure blow valve to standard-sized sheet to the complete backed off after random of normal air, while gradually closing back guide vane to 10%, stops Motor operation, per half an hour jiggering once terminates to oil circulation after motor is stopped transport.Motor-driven compressor above-mentioned substitutes steam The operating method for driving compressor is high pressure blow valve first to be opened in step e, then close guide vane, and each span of control limit of control is less than 5%.
The operating method of motor-driven compressor substitution steam driven compressor above-mentioned is electrodrive air compressor portion Part and steam driven compressor component can be converted mutually.
Compared with the prior art, the present invention proposes one aiming at the problem that existing domestic natural gas shortage and price rise Kind combines electric, coal resource abundant, finds the displacement of the natural gas nitrogen fertilizer plant energy and system optimization scheme, that is, passes through electric drive Air compressor replaces steam drive air compressor for air, reaches the substitution of the energy.Original part of fuel natural gas is set It is changed to raw natural gas, promotes the natural gas nitrogen fertilizer plant rate of capacity utilization, to enterprise's reasonable disposition resource, implements energy conservation and subtracts Row, skill upgrading is of great importance, and in industry has important exemplary role.
38 t/h of turbine steam consumption of steam drive air compressor implements electrodrive air compressor and replaces steam Drive air compressor for air, annual about 20,000,000 Nm of disposable fuel natural gas3, convert into and increase production 30,000 tons of urea in year, have Good economic benefit.Annual emission reduction flue gas about 200,000,000 is marked cube, wherein emission reduction CO2About 40,000 tons, boiler reduces sewage row every year High-volume about 6000 tons.
Detailed description of the invention
Fig. 1 is flow diagram of the invention;
Specific embodiment
The present invention will be further explained below with reference to the attached drawings, as shown in Figure 1, motor-driven compressor substitutes steam drive The structure of compressor, it is made of steam driven compressor component and motor-driven compressor component combination, steam drive compression Machine component include connect production system pipeline 14 and air compressor 11 for pressure pipeline 15, be equipped on production system pipeline 14 Main valve 7, air control valve 9, are parallel with bypass valve 10 on air control valve 9, and it is saturating to be connected with steam on air compressor 11 Flat machine 12 and air filter 13 are equipped with steam control valve 8 on for pressure pipeline 15, while also connecting on production system pipeline 14 It is connected to a set of above motor-driven compressor component with motor-driven compressor.The motor-driven compressor component packet It includes electricity consumption and drives electricity drive air filter 16, low pressure (LP) cylinder 17, motor 18 and high pressure cylinder 19 that supply air line 20 concatenates, drive gas supply in electricity It is connected with the blow-down pipe 21 of high pressure blow valve 3 on pipeline 20, is equipped with guide vane 1 in 17 import of low pressure (LP) cylinder, is connected on low pressure (LP) cylinder 17 There is the low pressure (LP) cylinder blow-down pipe with LOW PRESSURE VENT VALVE IN 2, is driven in electricity and be connected with the big valve 4 in outlet, pressure gauge 6 and flow on supply air line 20 Meter 5;The motor-driven compressor component used in figure is two sets simultaneously.
Motor-driven compressor substitutes the operating method of steam driven compressor, it includes the following steps
A, check whether whole system is normal before driving;
B, air-channel system is driven: guide vane 1, open-width 5% in opening motor-driven compressor component, LOW PRESSURE VENT VALVE IN 2 are complete It closes, 3 standard-sized sheet of high pressure blow valve exports big valve 4 and is in close state;
C, unit is driven: starting motor 1815s~30s to rated speed, and the operation of motor 18 starts after five minutes, by guide vane 1 opens greatly to 20%~30%;According to first convincing leaf 1 by patient analysis, then the principle of high pressure blow valve 3 is closed, the unlatching of each guide vane 1 and high pressure emptying The closing amplitude of valve 3 controls within 2%, until 19 rate of discharge of high pressure cylinder reaches 25600Nm3/ h, pressure reach 3.65MPa;
D, it opens electrodrive air compressor component and adds air: opening motor 18, close and export big valve 4, main valve 7, air tune Valve 9 and steam control valve 8 are saved, confirmation pressure flow is normally opened high pressure blow valve 3 afterwards and is vented;After chemical industry instruments, slowly It opens and exports big valve 4 and main valve 7, the outlet pressure for adjusting high pressure cylinder 19 with guide vane 1 and high pressure blow valve 3 is higher than system pressure 0.1MPa opens the bypass valve 10 of air control valve 9, while should be noted that the variation of catalyst temperature;Gradually open air control valve 9, And the bypass valve 10 of air control valve 9 is closed, high pressure blow valve 3 and adjustment 1 aperture of guide vane are turned down, slowly gradually to control temperature rise Rate;After the air whole addition system of wherein a set of motor-driven compressor component, then gradually slowly turn down another set of electricity Machine drives the high pressure blow valve 3 of compressor part and the aperture of adjustment guide vane 1, until the sky of another set of motor-driven compressor component System is all added in gas;
E, it moves back air: being down to 50% to technical load, gradually reduce the additional amount of regulating valve 9, be gradually opened high pressure blow valve 3, guide vane 1 is closed, after the addition of air control valve 9 reduces to 30%, air control valve 9 is closed and completes, scene confirmation high pressure blow valve 3 are adjusted to the complete backed off after random of normal air, gradually open big high pressure blow valve 3 to standard-sized sheet, while gradually closing back guide vane 1 to 10%, are adjusting Shi Xiankai high pressure blow valve 3 is saved, then closes guide vane 1, each span of control limit of control is less than 5%.Stop motor 18 to run, after motor 18 is stopped transport Per half an hour jiggering once terminates to oil circulation;
The air that above-mentioned electrodrive air compressor component and steam driven compressor component common combination are constituted provides system System, when breaking down one of wherein, electrodrive air compressor component and steam driven compressor component can be converted mutually.

Claims (2)

1. a kind of operating method of motor-driven compressor substitution steam driven compressor, it is characterised in that: it includes following step Suddenly
A, check whether whole system is normal before driving;
B, air-channel system is driven: guide vane (1), open-width 5% in opening motor-driven compressor component, LOW PRESSURE VENT VALVE IN (2) are complete It closes, high pressure blow valve (3) standard-sized sheet exports big valve (4) and is in close state;
C, unit is driven: starting motor (18) 15s~30s to rated speed, and motor (18) operation starts after five minutes, by guide vane (1) it opens greatly to 20%~30%;According to first convincing leaf (1) by patient analysis, then close the principle of high pressure blow valve (3), the unlatching of each guide vane (1) and The closing amplitude of high pressure blow valve (3) controls within 2%, until high pressure cylinder (19) rate of discharge reaches 25600Nm3/ h, pressure Reach 3.65MPa;
D, it opens electrodrive air compressor component and adds air: opening motor (18), close and export big valve (4), main valve (7), air Regulating valve (9) and steam control valve (8), confirmation pressure flow normally open high pressure blow valve (3) emptying afterwards;Chemical industry instruments terminate Afterwards, it slowly opens and exports big valve (4) and main valve (7), with the outlet of guide vane (1) and high pressure blow valve (3) adjustment high pressure cylinder (19) Pressure ratio system presses high 0.1MPa, opens the bypass valve (10) of air control valve (9), while should be noted that the variation of catalyst temperature; Gradually open air control valve (9) and close the bypass valve (10) of air control valve (9), gradually slowly turn down high pressure blow valve (3) and Guide vane (1) aperture is adjusted, to control temperature rise rate;System is all added in air to wherein a set of motor-driven compressor component After system, then gradually slowly turn down the high pressure blow valve (3) of another set of motor-driven compressor component and opening for adjustment guide vane (1) Degree, until system is all added in the air of another set of motor-driven compressor component;
E, it moves back air: being down to 50% to technical load, gradually reduce the additional amount of air control valve (9), be gradually opened high pressure emptying Valve (3) closes guide vane (1), after the addition of air control valve (9) reduces to 30%, closes air control valve (9) and completes, scene confirmation High pressure blow valve (3) is adjusted to the complete backed off after random of normal air, gradually opens big high pressure blow valve (3) to standard-sized sheet, while gradually closing back Guide vane (1) stops motor (18) operation, per half an hour jiggering once terminates to oil circulation after motor (18) is stopped transport to 10%;
Its motor-driven compressor substitute steam driven compressor it by steam driven compressor component and motor-driven compressor Component combination is constituted, and steam driven compressor component includes the pressure supply of connection production system pipeline (14) and air compressor (11) Pipeline (15) is connected with steam turbines (12) and air filter (13), for pressure pipeline on air compressor (11) (15) steam control valve (8) are equipped with;Being compressed more than a set of with motor driven is also connected on production system pipeline (14) The motor-driven compressor component of machine is equipped with main valve (7), air control valve (9), in air tune on production system pipeline (14) Bypass valve (10) are parallel on section valve (9);The motor-driven compressor component includes that supply air line (20) concatenation is driven in electricity consumption Electricity drive air filter (16), low pressure (LP) cylinder (17), motor (18) and high pressure cylinder (19), connected in electricity drive supply air line (20) There is the blow-down pipe (21) of high pressure blow valve (3), is driven in electricity and be connected with the big valve (4) in outlet on supply air line (20), in low pressure (LP) cylinder (17) import is equipped with guide vane (1), and the low pressure (LP) cylinder blow-down pipe with LOW PRESSURE VENT VALVE IN (2) is connected on low pressure (LP) cylinder (17);Described Motor-driven compressor component is two sets;High pressure blow valve (3) are first opened in step e, then close guide vane (1), each span of control limit of control Less than 5%.
2. the operating method of motor-driven compressor substitution steam driven compressor according to claim 1, feature exist In: electrodrive air compressor component and steam driven compressor component can be converted mutually.
CN201610389417.0A 2016-06-06 2016-06-06 The operating method of motor-driven compressor substitution steam driven compressor Active CN106015064B (en)

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CN104350345A (en) * 2011-12-15 2015-02-11 国际壳牌研究有限公司 System and method for producing liquefied hydrocarbon stream and method of operating compressor
CN102674489A (en) * 2012-05-17 2012-09-19 青岛科技大学 high-concentration ammonia-containing wastewater treatment method based on vapour compression
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