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.
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.