JPH07317534A - Carbon dust removing device for engine exhaust gas - Google Patents

Abstract

PURPOSE:To provide a device which removes carbon dust from the exhaust gas generated by an external or internal combustion engine or an incinerator furnace without use of any filter and which can operate safely and without risk of clogging. CONSTITUTION:An incombustible liquid 3 is jetted from a jet port 4 to an exhaust gas 2 from combustion which is passing through an exhaust pipe 1, and the carbon dust contained in the exhaust gas is taken into the liquid, and the produced mixture liquid 5 is discharged from a discharge port 6 furnished at the exhaust pipe.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the injection of carbon dust in exhaust gas generated in an external combustion engine, an internal combustion engine, or an incinerator, from an injection port provided in an exhaust pipe to an incombustible liquid. The present invention relates to a device for reducing the above.

2. Description of the Related Art Conventionally, a device for removing carbon dust in exhaust gas has a ceramic filter or the like that catches particles and burns them in the filter. However, the horsepower of the engine decreases due to clogging of the filter. However, there were many problems such as heat generation from the filter itself and generation of secondary NOx.

[Problems to be Solved by the Invention] The present invention eliminates these drawbacks, selectively catches carbon dust in exhaust gas, and prevents clogging of an exhaust pipe passage and heat generation. It is something to do.

[Means for Solving the Problems] The present invention provides a method of injecting a non-combustible liquid into the exhaust gas in the exhaust passage in order to efficiently remove carbon dust without installing filters in the exhaust passage. Thought. The non-combustible liquid is water, non-combustible oil, gel-like liquid, or the like.

[Operation] As a result, the dust in the exhaust gas is mixed with the incombustible liquid by the injected incombustible liquid flow and the exhaust gas flow, and adheres to the wall of the exhaust pipe. This dirty mixed liquid is transmitted by gravity to the drain port along the exhaust pipe wall and discharged.

[Embodiment] This waste liquid is re-injected into the exhaust pipe by the mixed liquid processing device and the pump (7). Since this route is a closed system, if the exhaust gas flow is fast, it is efficient to install a mixing container (8) in order to prevent the injection liquid from being discharged to the outside of the device and improve the state of mixing with the exhaust gas. is there. In addition, the mixed liquid that has been blown to the vicinity of the exhaust pipe outlet is recovered at the mixed liquid recovery port (9). These examples are shown in FIG. In the case of FIG. 2, the exhaust gas and the injection liquid are blown so as to form a vortex in the flat sphere type mixing container (8),
The mixing efficiency is improved. In addition, there are many combinations of the shape of the mixing container and the shape and direction of the injection liquid port depending on the temperature and state of the exhaust gas.

[Advantages of the Invention] When the present invention is applied to a diesel engine, there is no concern that the exhaust passage will be clogged, and even if the injection liquid is exhausted, there is nothing that is obstructed in the exhaust passage itself. Therefore, it is very safe. A good effect can be obtained by adjusting the viscosity and the injection state of the injection liquid according to the type and state of the exhaust gas.

[Brief description of drawings]

1 is a cross-sectional view of the present invention.

FIG. 2 is a sectional view of another embodiment of the present invention.

[Explanation of symbols]

(1) Exhaust pipe (2) Exhaust gas (3) Incombustible liquid (4)
Injection port (5) Mixed liquid (6) Discharge port (7) Mixed liquid processing device and pump (8) Mixing container (9) Mixed liquid recovery port

Claims (1)

[Claims] 1. A non-combustible liquid (3) is injected into a combustion exhaust gas (2) passing through an exhaust pipe (1) from an injection port (4) to remove carbon dust contained in the exhaust gas from the non-combustible liquid. The mixed liquid (5) is discharged into the exhaust pipe (6) provided in the exhaust pipe to reduce carbon dust released into the atmosphere.