SU1648875A1 - Method for heating frozen loose materials in railroad gondola cars - Google Patents

Abstract

The invention relates to auxiliary methods for loading and loading operations and allows for the flowability of cargoes frozen in railway wagons, such as ores, building materials, coal, coke, fluxes and heat. The purpose of the invention is an economical increase. These heating processes and ensuring the safety of open-top wagons. Open-top wagons are placed in a convective garage of a dead-end type and first served up with the maximum amount of coolant in the first zone from the gate, and then alternately in the next, with a reduction in the supply time. 1 il.

Description

The invention relates to auxiliary methods for loading and unloading operations and can be used to restore the flowability of cargoes frozen in railway wagons, such as ore, iron ore pellets, building materials, coal, coke, fluxes, etc.

The purpose of the invention is to increase the efficiency of the heating process and ensure the safety of gondola cars.

The drawing shows a diagram of a convective garage of a dead-end type, illustrating the proposed method of heating gondola cars,

The garage consists of section 1 for setting wagons, which is connected to the mixing chamber 4 by the supply lines for the coolant 2 and returning the recirculating 3 to the mixing chamber.

the chamber from the furnace 5 receives the flue gases and is recirculated from the section, which, after mixing by the exhauster 6, are injected into the garage section. For emergency temperature reduction in the mixing chamber, a circuit 7 is provided in the circuit for supplying atmospheric air. Throttle valves 8-1 are used for controlling and switching the flows during the process.

The fresh coolant supply pipeline brings it to the lower collectors 12 and upper heating 13, having nozzles 14 for the directional outflow of the coolant.

In the recirculation pipeline, the spent coolant enters through 5 "suction bottom ducts

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The method of heating frozen bulk cargo in railway gondola cars is that initially the maximum amount of coolant is supplied to the first side of the loading gates, followed by alternately supplying heat to the following areas while reducing the flow of coolant to them as far as the loading gates

After the heated gondolas are removed from the section 1 of the convective defrosting garage with a dead-end layout of rolling stock with a temperature of 90 ° C on average, a new batch of gondolas with frozen bulk cargo is immediately supplied, for example, iron ore pellets with an average freezing point of about -2 (g C). (according to the outdoor temperature) 0 Upon completion of the operation of placing gondolas in section 1 and closing the loading gates, the temperature in section 1 decreases in the zone from the gate (area A) to

50 C, in the middle (zone B) to b5 Cs in a dead-end zone (zone B) to 75 ° C0

From the moment the loading gates are closed, section 1 proceeds with the operation of heating gondola cars with frozen bulk loads. Heating in the following sequence is carried out. Fresh heat carrier from mixing chamber 4 is fed through a smoke exhauster 6 through line 2 to the collectors of the lower 12 and upper 13 heats of zone A, for which purpose, the throttle valves 9 and 10 are fully opened on the corresponding pipeline supplying the coolant to this zone. Simultaneously with the supply of the coolant to zone A, the valves 11 are fully opened spent coolant through appropriate suction bottom boxes of zone A to the recirculation system through pipeline 3 to the mixing chamber 4 о. The heat carrier to zone A is served in the maximum possible amount determined by the rating capacity of the exhauster with a fully open guide apparatus with a temperature of up to 150 ° C0. it to zone A at about 1 hour (upon reaching the controlled temperature of the brake cylinder of a railway gondola 55 C) and within an hour up to 110 С

After intensive treatment of the composition in zone A, coolant is supplied to middle zone B, for which valves 9 and 10 are opened at respective coolant supply manifolds to this zone (lower 12 and upper 13), valves 11 are fully opened at the suction of the heat carrier from zone B to the system recirculation through pipeline 3 to the mixing chamber 4, while the throttle valves 11 in zone A are kept open, although not completely, in order to produce partial

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heat removal from the gondola running gear, which, after intensive heat treatment, tends to accumulate heat from the sufficiently heated casing of the gondola cars, valves 9 and 10 in zone A close o The heat carrier to zone B is supplied with a temperature up to 140 ° C with a shorter duration than to zone A, and is about 50 min. 0 During this period, the temperature in zone B reaches 100 ° C.

Then served coolant in the area

8 with a temperature of 130 ° C, performing the same technological operations as during heating in the previous zones. After 40 minutes from the moment of supply of the heat transfer medium, the temperature in the dead end of the section corresponding to zone B increases to 90 ° C0.

Heating of the railway gondola batch in section 1 of the convective garage defrosting is completed, to do this, the smoke exhauster 6 is turned off, the throttle valve 8 is completely opened in the atmospheric air pipeline 7, the heat load on the furnace 5 is reduced, and it is brought to idle standby.

Claims (1)

9 and 10 at the supply of coolant to zone B are closed. For the preservation of heat, section 1 closes all valves 11 on the suction of the used recirculating heat carrier in the sequence from the first zone A to zone B. The formula of the invention The method of warming up frozen bulk cargoes in railway gondola cars, which means that the gondola cars are placed in a convective garage of a dead-end type and are supplied with coolant, which is such that, in order to increase the efficiency of the warm-up process and to ensure that they are 5,688,756. Wounds of gondola cars, initially by regular supply of heat to the next, supply the maximum amount of the heat zone when the carrier’s supply time to the first side of the heat carrier is shortened in them as the back door closes, followed by j from the loading gate. /ABOUT -eleven 15 11 15 -eleven.