Coke. A treatise on the manufacture of coke and the saving of by-products. With special references to the methods and ovens best adapted to the production of good coke from the various American coals by Fulton John 1826-1916

Author:Fulton, John, 1826-1916
Language: eng
Format: epub
Tags: Coke
Publisher: Scranton, Pa., The Colliery engineer co.
Published: 1895-03-25T05:00:00+00:00

Fla. 68.-CONDENSATION PLANT AT THE JULIENHCTTE.

Pre. ST.-AMMONIA FACTORY AT TBE COEE OVEN PLANT OF THE JULIENHCTTE.

The ammonia is set free from its compounds by milk of lime in the space above the cascade column, which is pumped into the apparatus from the lime reservoir Q.

The steam, saturated witli ammonia, is led into stilphnricacid in the lead lined chambers I*, wliere it is converted to ammonium sulphate, or into the condenser _fi", where it is taken out as ammimia watei-. When the chamber acid is neutralized the liquor is drawn off and the salt removed to the dropping board T, from wlieuee, when the lye has entirely drained, it will be transferred to tlie lead lined salt chambers.

On the other hand, if the ammonia water is simply condensed in the cooler TT, it runs into the receiver ^(holding about 10 tons), from whence

it may be piped into tank ears for transportation. The sulphuric acid may be stored in the receiver F, to be run off by means of air pumps or siphons as needed, into the boxes P.

The waste water, which runs off from the apparatus O^ is led into vats, where the lime settles out.

The plan and sections at Figs. 56 and 57, exhibit a view of Plant 3, of the Julienhuette, at Buethen, in East Silesia.

The cost of this oven and the distillation apparatus in Oermany is as follows:

The cost of oven - $ 1168.75

By-products apparatus, per oven 1686.25

Total % 2805.00

This cost would be largely increased in the United States—especially as the apparatus for the saving of the by-products are erected in duplicate.

This duplicate apparatus affords the opportunity of cleansing, and repairing the several.parts of these appliances without interruption to the continuous work of the ovens.

It adds to the expense in the construction of the plant, but it is found to be an element of economy in the working of these retort ovens.

The Otto-Hoffman oven is usually constructed in sections of 60 ovens each. A duplicate apparatus for condensing and exhausting will serve for two sections of ovens.

The cost of these ovens in the United States has been estimated at $3,300 each.

This includes the necessary apparatus for the saving of the by products of tar and ammonia sulphate.

This cost does not cover the patent charge for using this oven.

In the estimates of the value of the by-products secured, per ton of coke made, very large claims have been submitted.

With the use of good coking coal, the net profits have been estimated as high as $1.52 per net ton of coke produced. It may be pointed out that this estimate includes the value of 40 per cent, of surplus gas for heating purposes, which is calculated at 14 cents per ton of coke.

It is evident that such an estimate is misleading, when it is considered that tar is now worth at the coke ovens $5 per ton, and ammonia sulphate $55 to $60 per ton in market.

An average product of about 1 per cent, of ammonia sulphate and 3 per cent, of tar can be secured from the carbonization of coal to make 100 tons of coke.

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